本發(fā)明涉及一種光學活性吲哚螺環(huán)戊烯酮的合成方法,具體為光學活性環(huán)戊烯酮-1,3′-吲哚啉-2-酮及其衍生物和制備方法。
背景技術(shù):
手性環(huán)戊烯酮是有機合成中的重要中間體,是許多天然產(chǎn)物和藥物分子的重要組成部分,因此此類化合物具有非常重要的生物藥理活性,其合成方法往往通過多步反應(yīng)才能得到,目前一鍋法合成得到環(huán)戊烯酮的方法還很少見。
技術(shù)實現(xiàn)要素:
本發(fā)明的目的是克服現(xiàn)有技術(shù)的不足,提供一種過程簡單、產(chǎn)率高的光學活性光學活性環(huán)戊烯酮-1,3′-吲哚啉-2-酮及其衍生物的制備方法。
具體的技術(shù)方案是:
光學活性吲哚螺環(huán)戊烯酮及其衍生物,其化學結(jié)構(gòu)式為:
其中r是乙酰基、甲基、乙基、芐基等;r′是甲基、甲氧基、硝基、氯、溴、氟等。
該光學活性吲哚螺環(huán)戊烯酮及其衍生物,由以下方法制得:
以手性羧酸銠、反式2-三甲基硅氧基-4-甲氧基-1,3-丁二烯、溶劑(四氯化碳、氯仿、乙醚、四氫呋喃或正己烷)以0.001~0.01mol:1.0~2.0mmol:2~10ml比例混合溶解,加入吲哚-2-重氮化合物(1mmol)溶解于相應(yīng)溶劑的溶液,加完后繼續(xù)反應(yīng)直至反應(yīng)溶解完成,加入三氟乙酸0.5-2ml攪拌處理,反應(yīng)完畢的混合物加入飽和nh4cl水溶液,以乙酸乙酯萃取,所得的有機相,經(jīng)無水硫酸鈉干燥;蒸出溶劑后經(jīng)柱層析分離純化,得到光學活性吲哚螺環(huán)戊烯酮及其衍生物。
其產(chǎn)率在65-95%之間,產(chǎn)物光學純度為78-99%ee。
反應(yīng)過程為:
上列反應(yīng)式中,r是乙酰基、甲基、乙基、芐基;r′是氫、甲基、甲氧基、異丙基、硝基、氯、溴、氟等。所述的手性羧酸銠為四[(s)-(-)-n-(p-十二烷基苯磺酰)脯胺酸]二銠(ii)(rh2(dosp)4以及下述8種手性羧酸銠之一:
本發(fā)明提供的光學活性吲哚螺環(huán)戊烯酮及其衍生物和制備方法,比現(xiàn)有方法的產(chǎn)率高,并且制備過程簡單。
具體實施方式
以下通過實施例說明本發(fā)明的具體實施方式。
實施例1
光學活性的吲哚螺環(huán)戊烯酮3a的合成,其反應(yīng)式為:
在一干燥的試管中加入四[(s)-(-)-n-(p-十二烷基苯磺酰)脯胺酸]二銠(ii)(rh2(dosp)4(9.48mg,0.005mmol)、2-三甲基硅氧基-4-甲氧基-1,3-丁二烯(1.5mmol),加入無水無氧的二氯甲烷(1ml),室溫攪拌30min后,往其中慢慢加入n-芐基-2-氧代-3-重氮基吲哚(1a,0.1mmol)溶于二氯甲烷(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-吲哚-3-螺環(huán)戊烯酮3a。產(chǎn)率99%,白色固體,16%ee。對映選擇性通過hplc決定(chiralpakiccolumn,20%異丙醇的正己烷溶液,流速:1.0ml/min,254nm)。retentiontime:t(minor)=41.49min,major)=52.71min.1hnmr(400mhz,cdcl3,ppm):δ7.39-7.29(m,6h),7.27-7.24(m,1h),7.11-7.06(m,2h),6.86-6.84(d,j=7.90hz,1h),6.495(d,j=5.44hz,1h),5.00-4.92(m,2h),3.02(d,j=18.37hz,1h),2.63(d,j=18.38hz,1h).13cnmr(100mhz,cdcl3,ppm):δ207.6,176.2,161.7,142.5,135.3,135.2,129.4,129.3,128.9,127.9,127.4,123.5,123.4,109.8,56.6,44.6,444.4.hrms(esi):calcdforc19h15no2[m+h]+290.1136,found290.1140。
實施例2
光學活性的吲哚螺環(huán)戊烯酮3a的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(1.42mg,0.001mmol)、2-三甲基硅氧基-4-甲氧基-1,3-丁二烯(2mmol)加入無水無氧的四氯化碳(1ml),室溫攪拌30min后,往其中慢慢加入n-芐基-2-氧代-3-重氮基吲哚(1a,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-吲哚-3-螺環(huán)戊烯酮3a。產(chǎn)率95%,白色固體,75%ee。
手性羧酸銠1為上文中所述的八種手性羧酸銠中第一種,即1r=t-bu,x=h,下文依次類推。
實施例3
光學活性的吲哚螺環(huán)戊烯酮3a的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠ii(2.67mg,0.002mmol)、2-三乙基硅氧基-4-甲氧基-1,3-丁二烯(2mmol),加入無水無氧的四氯化碳(1ml),0℃下攪拌30min后,往其中慢慢加入n-芐基-2-氧代-3-重氮基吲哚(1a,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-吲哚-3-螺環(huán)戊烯酮3a。產(chǎn)率95%,白色固體,69%ee。
實施例4
光學活性的吲哚螺環(huán)戊烯酮3a的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠iii(12.66mg,0.008mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(2mmol),分子篩(50mg),加入無水無氧的四氯化碳(2ml),0℃下攪拌30min后,往其中慢慢加入n-芐基-2-氧代-3-重氮基吲哚(1a,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-吲哚-3-螺環(huán)戊烯酮3a。產(chǎn)率93%,白色固體,85%ee。
實施例5
光學活性的吲哚螺環(huán)戊烯酮3b的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠iv(2.35mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入5-異丙基-n-芐基-2-氧代-3-重氮基吲哚(1b,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-5-異丙基吲哚-3-螺環(huán)戊烯酮3b。產(chǎn)率90%,白色固體,83%ee。產(chǎn)率:90%.rf=0.34(petroleumether/ethylacetate5:1),[α]d30.4=-64.9(c=0.097,ch2cl2),m.p.105-1102℃,83%ee,determinedbyhplcanalysis(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).retentiontime:t(minor)=21.37min,t(major)=31.20min。重結(jié)晶后對映選擇性達到97%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).retentiontime:t(minor)=21.12min,t(major)=31.02min.1hnmr(400mhz,cdcl3,ppm):δ7.38-7.28(m,6h),7.13-7.10(m,1h),6.96-6.95(d,j=1.52hz,1h),6.78-6.76(d,j=8.03hz,1h),6.50-6.49(d,j=5.41,1h),5.01-4.90(m,2h),3.04-2.99(d,j=18.41hz,1h),2.90-2.83(m,1h),2.62(d,j=18.45hz,1h),1.21(d,j=6.91hz,6h).13cnmr(100mhz,cdcl3,ppm):δ207.9,176.2,162.0,144.6,140.3,135.5,135.1,129.4,128.9,127.4,127.0,121.5,109.5,56.8,44.7,44.4,33.9,24.2.hrms(esi):calcdforc22h21no2[m+h]+332.1606,found332.1610。
實施例6
光學活性的吲哚螺環(huán)戊烯酮3c的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠v(3.12mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入5-氟-n-芐基-2-氧代-3-重氮基吲哚(1c,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-5-氟-3-螺環(huán)戊烯酮3c。產(chǎn)率81%,白色固體,80%ee。rf=0.34(petroleumether/ethylacetate5:1),[α]d30.4=8.9(c=0.433,ch2cl2),m.p.48-45℃,80%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).retentiontime:t(minor)=37.96min,t(major)=33.86min.重結(jié)晶后對映選擇性達到99%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).retentiontime:t(minor)=40.23min,t(major)=35.53min.1hnmr(400mhz,cdcl3,ppm):δ7.38-7.28(m,6h),6.98-6.93(m,1h),6.87-6.84(m,1h),6.76-6.73(m,1h),6.51(d,j=5.44hz,1h),5.09-4.89(m,2h),3.02(d,j=18.56,1h),2.64-2.60(d,j=18.37hz,1h).13cnmr(100mhz,cdcl3,ppm):δ206.7,175.9,160.8,135.6,135.1,129.0,128.0,127.3,115.5,115.5,111.7,111.43,110.4,110.35,56.8,44.5,44.4.hrms(esi):calcdforc19h15fno2[m+h]+308.1042,found:308.104。
實施例7
光學活性的吲哚螺環(huán)戊烯酮3d的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠vi(2.37mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入5-氯-n-芐基-2-氧代-3-重氮基吲哚(1d,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-5-氯-3-螺環(huán)戊烯酮3d。產(chǎn)率88%,白色固體,86%ee。rf=0.33(petroleumether/ethylacetate5:1),[α]d30.4=-6.5(c=0.263,ch2cl2),m.p.165-163℃,86%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).retentiontime:t(minor)=30.91min,t(major)=22.99min.重結(jié)晶后對映選擇性達到96%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).retentiontime:t(minor)=32.24min,t(major)=24.10min.1hnmr(400mhz,cdcl3,ppm):δ7.49(d,j=5.43hz,1h),7.445(d,j=6.24hz,1h),7.38-7.31(m,3h),7.28-7.27(m,2h),7.25(m,1h),6.69(d,j=8.43,1h),5.685(d,j=6.24,1h),4.96-4.86(m,2h),3.26(d,j=16.71,1h),2.74(d,j=16.71,1h).13cnmr(100mhz,cdcl3,ppm):δ188.6,171.8,161.2,140.6,134.3,131.1,129.1,129.0,128.8,128.2,127.1,124.9,111.2,107.2,81.1,44.1,41.2.hrms(esi):calcdforc19h15clno2[m+h]+:325.0684,found:325.0700。
實施例8
光學活性的吲哚螺環(huán)戊烯酮3e的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠vii(2.48mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入5-溴-n-芐基-2-氧代-3-重氮基吲哚(1e,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-5-溴-3-螺環(huán)戊烯酮3e。產(chǎn)率99%,白色固體。rf=0.35(petroleumether/ethylacetate5:1),[α]d30.4=-13.7(c=0.742,ch2cl2),m.p.153-152℃,83%ee。determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=23.58min,t(minor)=31.15min重結(jié)晶后對映選擇性達到99%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).retentiontime:t(major)=23.64min,t(minor)=33.26min.1hnmr(400mhz,cdcl3,ppm):δ7.39-7.32(m,4h),7.30-7.28(m,3h),7.22-7.216(d,j=1.85hz,1h),6.705(d,j=8.34hz,1h),6.5155(d,j=5.43hz,1h),3.00(d,j=18.40hz,1h),2.65-2.60(d,j=18.40hz,1h).13cnmr(100mhz,cdcl3,ppm):δ206.6,175.6,160.6,141.5,135.6,134.9,132.1,131.5,129.0,128.1,127.3,126.7,116.0,111.2,56.5,44.5,44.4.hrms(esi):calcdforc19h15brno2[m+h]+369.0187,found:369.0190。
實施例9
光學活性的吲哚螺環(huán)戊烯酮3f的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠viii(2.48mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入5-甲基-n-芐基-2-氧代-3-重氮基吲哚(1f,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-5-甲基-3-螺環(huán)戊烯酮3f。產(chǎn)率86%,白色固體。rf=0.28(petroleumether/ethylacetate5:1),[α]d30.4=-10.1(c=0.109,ch2cl2),m.p.163-161℃,84%ee。determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=29.56min,t(minor)=40.84min。重結(jié)晶后對映選擇性達到90%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=30.70min,t(minor)=42.57min.1hnmr(400mhz,cdcl3,ppm):δ7.38-7.28(m,6h),7.06-7.04(m,1h),6.91(s,1h),6.715(d,j=7.96hz,1h),6.48(d,j=5.41hz,1h),5.02-4.90(m,2h),3.01(d,j=18.41hz,1h),2.62(d,j=18.39hz,1h),2.31(s,3h).13cnmr(100mhz,cdcl3,ppm):δ207.6,176.1,161.8,140.1,135.5,135.0,133.2,129.49,129.45,128.9,127.9,127.3,124.2,109.5,56.7,44.6,44.4,29.7,21.0.hrms(esi):calcdforc20h17no2[m+h]+304.1293,found304.1300。
實施例10
光學活性的吲哚螺環(huán)戊烯酮3g的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠viii(2.48mg,0.002)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入5-甲氧基-n-芐基-2-氧代-3-重氮基吲哚(1g,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-5-甲氧基-3-螺環(huán)戊烯酮3g。產(chǎn)率96%,白色固體。rf=0.35(petroleumether/ethylacetate5:1),[α]d30.4=-6.0(c=0.267,ch2cl2),m.p.130-127℃,77%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=29.67min,t(minor)=39.80min。重結(jié)晶后對映選擇性達到99%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).time:t(major)=35.80min,t(minor)=48.07min.1hnmr(400mhz,cdcl3,ppm):δ7.38-7.28(m,6h),6.79-6.76(m,1h),6.72(d,j=8.51hz,1h),6.695(d,j=2.41,1h),6.49(d,j=5.46hz,1h),5.00-4.89(m,1h),3.76(s,3h),3.002(d,j=18.38hz,1h),2.62(d,j=18.39hz,1h).13cnmr(100mhz,cdcl3,ppm):δ207.4,175.8,161.6,156.6,135.8,135.5,135.2,130.7,128.9,127.9,127.3,113.8,110.5,110.2,57.0,55.8,44.6,44.4.hrms(esi):calcdforc20h17no3[m+h]+320.1242,found320.1240。
實施例11
光學活性的吲哚螺環(huán)戊烯酮3h的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠vii(2.48mg,0.002)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入5-硝基-n-芐基-2-氧代-3-重氮基吲哚(1h,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-5-硝基-3-螺環(huán)戊烯酮3h。產(chǎn)率82%,白色固體。rf=0.31(petroleumether/ethylacetate5:1),[α]d30.4=-6.7(c=0.179,ch2cl2),m.p.140-138℃,71%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=16.89min,t(minor)=29.18min。重結(jié)晶后對映選擇性達到87%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=17.77min,t(minor)=30.85min.1hnmr(400mhz,cdcl3,ppm):δ8.23(d,j=2.28hz,1h),8.005(d,j=2.20hz,1h),7.42-7.30(m,6h),6.94(d,j=8.84hz,1h),6.54(d,j=5.53,1h),5.09-4.98(m,2h),3.04(d,j=18.35hz,1h),2.70(d,j=18.32hz,1h).13cnmr(100mhz,cdcl3,ppm):δ205.8,176.3,159.5,148.0,143.9,136.4,134.2,130.5,129.3,128.5,127.3,126.4,119.5,109.4,56.1,44.8,44.3.hrms(esi):calcdforc19h14n2o4[m+h]+335.0987,found339.1000。
實施例12
光學活性的吲哚螺環(huán)戊烯酮3i的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(2.84mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入4-甲基-n-芐基-2-氧代-3-重氮基吲哚(1i,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-4-甲基-3-螺環(huán)戊烯酮3i。產(chǎn)率73%,無色油狀。rf=0.36(petroleumether/ethylacetate5:1),[α]d30.4=17.4(c=0.21,ch2cl2),75%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=27.77min,t(minor)=39.37min.1hnmr(400mhz,cdcl3,ppm):δ7.36-7.29(m,7h),7.19-7.12(m,1h),6.89-6.85(t,1h),6.71(d,j=7.81hz,1h),6.59-6.56(m,1h),5.02-4.91(m,2h),2.95(d,j=18.64hz,1h),2.82-2.77(d,j=18.58hz,1h),2.16(s,3h).13cnmr(100mhz,cdcl3,ppm):δ207.4,176.2,161.1,142.7,136.2,128.9,127.3,125.7,107.5,107.0,69.6,57.0,44.4,43.9,42.3,29.7,18.0,17.1.hrms(esi):calcdforc20h17no2[m+h]+304.1293,found304.1300。
實施例13
光學活性的吲哚螺環(huán)戊烯酮3j的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(2.84mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入4-溴-n-芐基-2-氧代-3-重氮基吲哚(1j,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-4-溴-3-螺環(huán)戊烯酮3j。產(chǎn)率92%,無色油狀。rf=0.32(petroleumether/ethylacetate5:1),[α]d30.4=15.4(c=0.18,ch2cl2),24%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=47.00min,t(minor)=64.07min.1hnmr(400mhz,cdcl3,ppm):δ7.42-7.29(m,5h),7.25-7.23(d,j=5.44hz,1h),7.18-7.12(m,2h),6.81-6.79(m,1h),6.615(d,j=5.44hz,1h),5.03-4.91(m,2h),3.02(d,j=18.24hz,1h),2.84(d,j=18.24hz,1h).13cnmr(100mhz,cdcl3,ppm):δ206.9,175.6,159.1,144.4,137.3,134.9,130.7,129.1,128.1,127.3,126.8,119.6,108.7,58.0,44.5,41.7,25.4.hrms(esi):calcdforc19h14brno2[m+h]+369.0187,found369.0200。
實施例14
光學活性的吲哚螺環(huán)戊烯酮3k的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(2.84mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入4-氯-n-芐基-2-氧代-3-重氮基吲哚(1k,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-4-氯-3-螺環(huán)戊烯酮3k。產(chǎn)率82%,無色油狀。rf=0.37(petroleumether/ethylacetate5:1),[α]d30.4=2.6(c=0.226,ch2cl2),45%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=23.85min,t(minor)=31.03min.1hnmr(400mhz,cdcl3,ppm):δ7.39-7.28(m,5h),7.25-7.19(m,1h),7.03-7.00(m,1h),6.77-6.74(m,1h),6.595(d,j=5.44hz,1h),5.03-4.91(m,2h),3.00(d,j=18.28hz,1h),2.88(d,j=18.20,1h).13cnmr(100mhz,cdcl3,ppm):δ206.9,175.6,159.1,136.8,134.9,131.3,130.5,129.1,128.1,127.3,125.2,124.2,108.2,57.1,44.6,41.7,29.7.hrms(esi):calcdforc19h14clno2[m+h]+325.0684,found325.0700。
實施例15
光學活性的吲哚螺環(huán)戊烯酮3l的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(2.84mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入6-甲氧基-n-芐基-2-氧代-3-重氮基吲哚(1l,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-6-甲氧基-3-螺環(huán)戊烯酮3l。產(chǎn)率81%,白色固體。rf=0.34(petroleumether/ethylacetate5:1),[α]d30.4=-4.8(c=0.242,ch2cl2),m.p.106-102℃,90%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=41.08min,t(minor)=49.26min.重結(jié)晶后對映選擇性達到99%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=39.52min,t(minor)=47.07.min.1hnmr(400mhz,cdcl3,ppm):δ7.38-7.25(m,6h),6.99(d,j=8.24hz,1h),6.58-6.55(m,1h),6.46-6.42(m,2h),5.00-4.88(m,2h),3.76(s,3h),2.99(d,j=18.42hz,1h),2.60(d,j=18.42hz,1h).13cnmr(100mhz,cdcl3,ppm):δ207.5,176.7,161.8,160.9,143.8,135.4,134.8,128.9,127.9,127.4,124.0,121.2,107.1,97.9,56.2,55.5,44.8,44.4.hrms(esi):calcdforc20h17no3[m+h]+320.1242,found320.1240。
實施例16
光學活性的吲哚螺環(huán)戊烯酮3m的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(2.84mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入6-氯-n-芐基-2-氧代-3-重氮基吲哚(1m,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-6-氯-3-螺環(huán)戊烯酮3m。產(chǎn)率85%,白色固體。rf=0.34(petroleumether/ethylacetate5:1),[α]d30.4=12.9(c=0.128,ch2cl2),m.p.104-102℃,87%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=42.14min,t(minor)=48.66min.重結(jié)晶后對映選擇性達到93%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=35.98min,t(minor)=41.82min.1hnmr(400mhz,cdcl3,ppm):δ7.32-7.26(m,5h),7.07-7.01(m,2h),6.835(d,j=1.60hz,1h),6.505(d,j=5.60hz,1h),5.01-4.90(m,2h),3.00(d,j=18.40hz,1h),2.60(d,j=18.40hz,1h),1.22(s,3h),1.20(s,3h).13cnmr(100mhz,cdcl3,ppm):δ207.0,176.2,161.0,143.7,135.5,135.1,134.8,134.4,123.4,110.3,56.2,44.5,44.4,32.0,29.7,22.7,14.2.hrms(esi):calcdforc19h14clno2[m+h]+325.0684,found325.0670。
實施例17
光學活性的吲哚螺環(huán)戊烯酮3n的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(2.84mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入6-溴-n-芐基-2-氧代-3-重氮基吲哚(1n,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-6-溴-3-螺環(huán)戊烯酮3n。產(chǎn)率77%,白色固體。rf=0.31(petroleumether/ethylacetate5:1),[α]d30.4=7.1(c=0.148,ch2cl2),m.p.138-135℃,90%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=41.14min,t(minor)=46.69min.重結(jié)晶后對映選擇性達到99%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=39.99min,t(minor)=48.75min.1hnmr(400mhz,cdcl3,ppm):δ7.33-7.21(m,6h),6.99-6.95(m,3h),6.505(d,j=5.20hz,1h),5.00-4.89(m,2h),3.00(d,j=18.40hz,1h),2.65(d,j=18.40,1h).13cnmr(100mhz,cdcl3,ppm):δ206.9,176.0,160.8,143.8,135.5,134.8,129.1,128.3,128.2,127.3,126.3,124.7,122.9,113.1,56.2,44.5,44.4,29.7.hrms(esi):calcdforc19h14brno2,[m+h]+369.0187,found369.0200。
實施例18
光學活性的吲哚螺環(huán)戊烯酮3o的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(2.84mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入7-三氟甲基-n-芐基-2-氧代-3-重氮基吲哚(1o,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-7-三氟甲基-3-螺環(huán)戊烯酮3o。產(chǎn)率81%,白色固體。rf=0.32(petroleumether/ethylacetate5:1),[α]d30.4=4.8(c=0.136,ch2cl2),m.p.145-142℃,54%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=21.49min,t(minor)=29.69min.重結(jié)晶后對映選擇性達到94%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=19.28min,t(minor)=25.52min1hnmr(400mhz,cdcl3,ppm):δ7.315(d,j=6.40hz,1h),7.30-7.20(m,6h),6.54(d,j=5.20hz,2h),6.52(d,j=5.20hz,1h),5.27(s,2h),3.05-3.01(d,j=18.40hz,1h),2.66(d,j=18.40hz,1h).13cnmr(100mhz,cdcl3,ppm):δ206.6,177.4,160.6,140.8,135.8,135.7,132.2,128.6,127.5,127.47,127.2,125.6,124.5,123.0,55.0,46.1,46.0,45.0.hrms(esi):calcdforc20h14f3no2,[m+h]+358.1010,found358.100。
實施例19
光學活性的吲哚螺環(huán)戊烯酮3p的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(2.84mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入7-甲基-n-芐基-2-氧代-3-重氮基吲哚(1p,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-7-甲基-3-螺環(huán)戊烯酮3p。產(chǎn)率80%,紅色固體。rf=0.35(petroleumether/ethylacetate5:1),[α]d30.4=20.9(c=0.074,ch2cl2),m.p.99-96℃,76%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(minor)=57.74min,t(major)=86.50min.重結(jié)晶后對映選擇性達到94%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=19.28min,t(minor)=25.52min。hnmr(400mhz,cdcl3,ppm):δ7.38-7.29(m,4h),7.15(d,j=7.11hz,2h),7.04-6.97(m,3h),6.495(d,j=5.46hz,1h),5.26(s,2h),3.08(d,j=18.33hz,1h),2.66(d,j=18.41hz,1h),2.34(s,3h).13cnmr(100mhz,cdcl3,ppm):δ207.7,177.2,161.9,140.6,137.1,135.0,133.2,130.1,129.0,127.5,125.6,123.5,121.4,120.7,56.1,45.5,45.1,29.7.hrms(esi):calcdforc20h17no2,[m+h]+304.1293,found304.1300。
實施例20
光學活性的吲哚螺環(huán)戊烯酮3q的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(2.84mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入5,7-二甲基-n-芐基-2-氧代-3-重氮基吲哚(1q,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-5,7-二甲基-3-螺環(huán)戊烯酮3q。產(chǎn)率80%,白色固體。rf=0.32(petroleumether/ethylacetate5:1),[α]d30.4=-7.0°(c=0.293,ch2cl2),m.p.159-155℃,75%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=26.59min,t(minor)=42.82min.重結(jié)晶后對映選擇性達到79%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=29.08min,t(minor)=46.41min.1hnmr(400mhz,cdcl3,ppm):δ7.37-7.31(m,3h),7.24-7.20(m,4h),6.98(d,j=8.74hz,1h),6.61(d,j=5.48hz,1h),5.42(s,2h),3.03-2.98(d,j=18.25hz,1h),2.86(d,j=18.25hz,1h).13cnmr(100mhz,cdcl3,ppm):δ206.3,176.3,158.2,137.1,136.7,132.8,130.0,128.8,127.6,126.4,125.0,114.6,56.8,45.5,41.9,29.7,25.4.hrms(esi):calcdforc21h19no2,[m+h]+318.1499,found318.1500。
實施例21
光學活性的吲哚螺環(huán)戊烯酮3r的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(2.84mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入4,7-二氯-n-芐基-2-氧代-3-重氮基吲哚(1r,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-4,7-二氯-3-螺環(huán)戊烯酮3r。產(chǎn)率91%,白色固體。rf=0.27(petroleumether/ethylacetate5:1),[[α]d30.4=4.2°(c=0.179,ch2cl2),m.p.57-59℃,37%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=35.54min,t(minor)=52.11min.重結(jié)晶后對映選擇性達到36%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=33.70min,t(minor)=48.73min.1hnmr(400mhz,cdcl3,ppm):δ7.34-7.29(m,3h),7.23-7.20(m,4h),6.99(d,j=8.80,1h),6.61(d,j=5.60hz,1h),5.42(s,2h),3.03-2.84(m,2h).13cnmr(100mhz,cdcl3,ppm):δ206.6,176.3,158.2,137.1,136.7,132.8,130.0,128.8,127.6,126.4,125.0,114.6,56.8,45.5,41.9,29.7,25.4.hrms(esi):calcdforc19h13clno2,[m+h]+359.0294,found359.0300。
實施例22
光學活性的吲哚螺環(huán)戊烯酮3s的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(2.84mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入4-溴-5-甲基-n-芐基-2-氧代-3-重氮基吲哚(1s,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-4-溴,5-甲基-3-螺環(huán)戊烯酮3s。產(chǎn)率85%,黃色油狀液體。rf=0.25(petroleumether/ethylacetate5:1),[α]d30.4=-6.0°(c=0.306,ch2cl2),44%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(minor)=27.59min,t(major)=36.54min.1hnmr(400mhz,cdcl3,ppm):δ7.37-7.30(m,5h),7.23(d,j=5.44hz,1h),7.16-7.14(m,1h),6.71(d,j=7.95hz,1h),6.6(d,j=5.44hz,1h),5.01-4.90(m,2h),3.08-3.03(d,j=18.23hz,1h),2.82(d,j=18.23hz,1h),2.34(s,3h).13cnmr(100mhz,cdcl3,ppm):δ207.2,175.5,159.5,142.0,137.2,135.0,133.1,130.9,129.0,128.0,127.3,122.3,108.5,58.6,44.4,41.7,29.7,22.2.hrms(esi):calcdforc20h16brno2,[m+h]+383.0344,found383.0340。
實施例23
光學活性的吲哚螺環(huán)戊烯酮3t的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(2.84mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入n-蒽基-2-氧代-3-重氮基吲哚(1t,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-3-螺環(huán)戊烯酮3t。產(chǎn)率70%,白色固體。rf=0.26(petroleumether/ethylacetate5:1),[α]d30.4=5.4°(c=1.374,ch2cl2),m.p.168-166℃,85%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=28.46min,t(minor)=38.61min.重結(jié)晶后對映選擇性達到90%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=30.63min,t(minor)=40.33min.1hnmr(400mhz,cdcl3,ppm):δ8.53(s,1h),8.45(d,j=8.96hz,2h),8.06(d,j=8.45hz,2h),7.66-7.62(m,2h),7.53-7.57(m,2h),7.23(d,j=5.41hz,1h),6.97-6.95(m,1h),6.88-6.80(m,2h),6.52-6.50(d,j=5.41hz,1h),6.36-6.34(m,1h),6.09(d,j=15.45hz,1h),5.96(d,j=15.48hz,1h),3.10-3.05(d,j=18.45hz,1h),2.59(d,j=18.45hz,1h).13cnmr(100mhz,cdcl3,ppm):δ207.7,176.2,161.8,142.5,135.2,131.4,130.9,129.8,129.3,129.2,129.1,127.1,125.2,123.4,123.0,110.8,56.6,44.7,38.1,29.7.hrms(esi):calcdforc27h19no2,[m+h]+390.1449,found390.1500。
實施例24
光學活性的吲哚螺環(huán)戊烯酮3u的合成,其反應(yīng)式為:
在一干燥的試管中加入手性羧酸銠i(2.84mg,0.002mmol)、2-三異丙基硅氧基-4-甲氧基-1,3-丁二烯(3mmol),分子篩(40mg),加入無水無氧的四氯化碳(3ml),0℃下攪拌40min后,往其中慢慢加入n-萘基-2-氧代-3-重氮基吲哚(1u,0.1mmol)溶于四氯化碳(1ml)的溶液,反應(yīng)完成后(以tlc檢測反應(yīng)進展),將反應(yīng)化合物降到0℃,加入0.5ml三氟乙酸攪拌15min,反應(yīng)混合物加入5ml飽和nh4cl水溶液,以乙酸乙酯萃取反應(yīng)液三次,每次10ml,合并有機相,經(jīng)無水硫酸鈉干燥。蒸出溶劑后經(jīng)柱層析分離純化(石油醚:乙酸乙酯=10:1),得到(s)-2-氧代-3-螺環(huán)戊烯酮3u。產(chǎn)率95%,白色固體。rf=0.28(petroleumether/ethylacetate5:1),[α]d30.4=17.7°(c=0.155,ch2cl2),m.p.178-176℃,83%ee,determinedbyhplcanalysis(chiralpakiacolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=29.45min,t(minor)=37.06min.重結(jié)晶后對映選擇性達到98%ee,hplc分析條件(chiralpakiccolumn,40%ipainhexane,rate:1.0ml/min,254nm).t(major)=31.68min,t(minor)=40.02min.1hnmr(400mhz,cdcl3,ppm):δ7.86-7.81(m,4h),7.53-7.50(m,2h),6.46-6.43(m,1h),7.34(d,j=5.40hz,1h),7.26-7.22(m,1h),7.12-7.05(m,2h),6.90(d,j=7.82hz,1h),6.51(d,j=5.40hz,1h),5.21-5.08(m,2h),3.06(d,j=18.40hz,1h),2.67(d,j=18.43hz,1h).13cnmr(100mhz,cdcl3,ppm):δ207.6,176.3,161.4,142.5,135.3,133.3,132.9,132.8,129.4,129.3,129.0,127.8,127.77,126.5,126.46,126.3,125.1,123.5,123.4,109.8,56.7,44.7,44.6.hrms(esi):calcdforc23h17no2,[m+h]+340.1293,found390.1300。