本發(fā)明涉及螺環(huán)羥吲哚類化合物的合成,具體涉及含苯酚結(jié)構(gòu)的手性螺環(huán)羥吲哚二氫吡喃化合物及其催化合成方法。
背景技術(shù):
3,4-二氫吡喃及四氫吡喃類化合物是重要的結(jié)構(gòu)單元,廣泛存在于多種具有生物活性的分子中,因此在合成化學(xué)領(lǐng)域受到了廣泛關(guān)注。螺環(huán)二氫吡喃化合物具有多種類型的藥理活性如抗真菌性,也可用做bace-1抑制劑以σ1受體拮抗劑。
現(xiàn)有技術(shù)中螺環(huán)羥吲哚衍生物的合成方法比較常見但螺環(huán)羥吲哚二氫吡喃的合成方法鮮有報道。2016年,發(fā)明人課題組以金雞納堿衍生的硫脲為最優(yōu)催化劑對2-羥基-1,4-萘醌與靛紅衍生的β,γ-不飽和α-酮酸酯間的不對稱michael/半縮酮化串聯(lián)環(huán)化反應(yīng)。高產(chǎn)率、高選擇性地獲得了一系列具有潛在生物活性研究價值的螺環(huán)二氫吡喃化合物。(yin,s.-j.;zhang,s.-y.;zhang,j.-q.;sun,b.-b.;fan,w.-t.;wu,b.;wang,x.-w.,organocatalytictandemenantioselectivemichael-cyclizationofisatin-derivedβ,γ-unsaturatedα-ketoesterswith3-hydroxy-4h-chromen-4-oneor2-hydroxy-1,4-naphthoquinonederivatives.rscadvances2016,6,84248?84254.)。同年,kesavan課題組將脯氨酸衍生的硫脲催化劑用于α-甲酰基酮與靛紅衍生的β,γ-不飽和α-酮酸酯間的逆電子需求的不對稱diels?alder反應(yīng),高產(chǎn)率、高立體選擇性地獲得了目標(biāo)產(chǎn)物。(vishwanath,m.;vinayagam,p.;gajulapalli,v.p.r.;kesavan,v.,asymmetricorganocatalyticassemblyofoxindolesfusedwithspiro-3,4-dihydropyranswiththreecontiguousstereocentersconsistingofvicinalquaternarycenters.asian.j.org.chem.2016,5,613?616.)。盡管如此,能夠通過金屬絡(luò)合物催化合成手性螺環(huán)羥吲哚二氫吡喃化合物仍是未報道過且有重要意義的。
因此很有必要尋找一種簡單、高效的合成結(jié)構(gòu)多樣性的螺環(huán)羥吲哚二氫吡喃化合物的合成方法,該方法不僅要收率高、非對映選擇性和對映選擇性優(yōu)秀,同時所需底物易合成,廉價易得,催化劑催化效率高,反應(yīng)條件溫和,操作簡單。
技術(shù)實現(xiàn)要素:
本發(fā)明的目的是提供含苯酚結(jié)構(gòu)的手性螺環(huán)羥吲哚二氫吡喃化合物及其催化合成方法。
為達(dá)到上述發(fā)明目的,本發(fā)明采用的技術(shù)方案是:
一種含苯酚結(jié)構(gòu)的手性螺環(huán)羥吲哚二氫吡喃化合物的合成方法,包括以下步驟:以2-烯基苯酚和靛紅衍生的β,γ-不飽和α-酮酸酯為反應(yīng)物,在手性雙噁唑啉化合物、cu(ii)絡(luò)合物存在下,在苯類溶劑中,反應(yīng)得到含苯酚結(jié)構(gòu)的螺環(huán)羥吲哚二氫吡喃化合物;
所述靛紅衍生的β,γ-不飽和α-酮酸酯的化學(xué)結(jié)構(gòu)式為:
其中r1選自:甲基、烯丙基、甲氧基甲基;r2選自:氫、5-甲基、5-甲氧基、5-氟、5-氯、5-溴、6-氯、7-甲基、7-氟;
所述2-烯基苯酚的化學(xué)結(jié)構(gòu)式為:
其中r3選自:氫、甲基;r4選自:氫、4-甲基、4-叔丁基、4-氯、5-甲基、5-甲氧基、6-甲氧基、6-甲基;
所述含苯酚結(jié)構(gòu)的手性螺環(huán)羥吲哚二氫吡喃化合物的化學(xué)結(jié)構(gòu)式為:
本發(fā)明中,所述苯類溶劑可以為甲苯、乙苯、對二甲苯、間二甲苯、均三甲苯、三氟甲苯以及氟代苯,其中以當(dāng)三氟甲苯作為溶劑時反應(yīng)效果最佳。
本發(fā)明中,以摩爾量計,所述cu(ii)絡(luò)合物的用量為靛紅衍生的β,γ-不飽和α-酮酸酯的5-10%;以摩爾量計,2-烯基苯酚用量為靛紅衍生的β,γ-不飽和α-酮酸酯的1.1-1.3倍,優(yōu)選1.2倍。
本發(fā)明中,所述cu(ii)絡(luò)合物的化學(xué)結(jié)構(gòu)式如下所示:
所述手性雙噁唑啉化合物的化學(xué)結(jié)構(gòu)式為:
本發(fā)明中,所述反應(yīng)的時間為1-36小時,反應(yīng)的溫度為室溫。
本發(fā)明室溫下首次以靛紅衍生的β,γ-不飽和α-酮酸酯、2-烯基苯酚為原料,通過不對稱[4+2]環(huán)加成反應(yīng)得到含苯酚結(jié)構(gòu)的螺環(huán)羥吲哚二氫吡喃化合物;反應(yīng)過程包括室溫下,向反應(yīng)瓶中依次加入cu(ii)絡(luò)合物、手性雙噁唑啉化合物、2-烯基苯酚、靛紅衍生的β,γ-不飽和α-酮酸酯、苯類溶劑,磁力攪拌進行反應(yīng),反應(yīng)結(jié)束后,粗產(chǎn)物通過簡單的柱層析(洗脫劑優(yōu)選為石油醚∶乙酸乙酯=3:1)即可得到目標(biāo)產(chǎn)物;該類化合物含有螺環(huán)羥吲哚、苯酚、二氫吡喃重要的生物活性單元,有較高的潛在應(yīng)用價值。
優(yōu)選的技術(shù)方案中,反應(yīng)體系中使用三氟甲苯為溶劑和使用(box)/cu(ii)絡(luò)合物為催化劑,以提高反應(yīng)收率以及立體選擇性。
上述反應(yīng)過程如下所示:
由于上述技術(shù)方案運用,本發(fā)明與現(xiàn)有技術(shù)相比具有下列優(yōu)點:
1.本發(fā)明首次實現(xiàn)了以靛紅衍生的β,γ-不飽和α-酮酸酯和2-烯基苯酚為反應(yīng)物、手性(box)/cu(ii)絡(luò)合物為催化劑合成一種含苯酚結(jié)構(gòu)的手性螺環(huán)羥吲哚二氫吡喃化合物的方法,該方法操作簡便,收率高,化學(xué)選擇性擇性好;
2.本發(fā)明所公開的合成一種含苯酚結(jié)構(gòu)的手性螺環(huán)羥吲哚二氫吡喃化合物的反應(yīng)后處理簡單,反應(yīng)屬于串聯(lián)環(huán)化反應(yīng),體系中沒有副產(chǎn)物生成;
3.本發(fā)明公開的合成一種含苯酚結(jié)構(gòu)的手性螺環(huán)羥吲哚二氫吡喃化合物的方法適用底物范圍很廣,原料均為工業(yè)化、廉價易得的產(chǎn)品,無污染;并且官能團兼容性高,對映選擇性以及非對映選擇性優(yōu)秀,收率高。
具體實施方式
下面結(jié)合實施例對本發(fā)明作進一步描述:
實施例一:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1a(25.9mg,0.1mmol)以及2a(14.4mg,0.12mmol,1.2equiv),室溫下反應(yīng)3小時至底物1a消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得36.0mg白色固體3aa,白色固體,收率為95%,83–84°c。
對產(chǎn)物3aa進行分析,結(jié)果如下:95%yield,98:2dr,93%ee[daicelchiralcelad-h,hexanes/i-proh=80/20,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=16.723,t(minor)=12.119];[α]25d=–104.6(c0.19,chcl3);1hnmr(400mhz,cdcl3)δ7.44–7.31(m,2h),7.21(dd,j=7.7,1.7hz,1h),7.17–7.09(m,2h),6.95–6.80(m,4h),5.88(d,j=1.7hz,1h),5.61(dd,j=12.3,2.1hz,1h),4.26(qd,j=7.2,1.2hz,2h),3.26(s,3h),2.58(dd,j=13.7,12.3hz,1h),2.09(dt,j=13.7,2.0hz,1h),1.30(t,j=7.1hz,3h);13cnmr(100mhz,cdcl3)δ177.0,161.6,153.7,146.0,142.3,132.5,129.1,128.5,126.2,124.0,123.8,122.7,119.9,116.4,108.5,108.1,73.0,61.2,47.1,36.1,26.3,13.7;ir(kbr):3411,1713,1687,1644,1609,1491,1469,1457,1371,1352,1296,1243,1169,1133,1112,1087,1044,1019,983,859,822,752,688cm-1;hrms(esi):m/z=380.1499(calcdforc22h21no5+h+=380.1492)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例二:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1b(28.5mg,0.1mmol)以及2a(14.4mg,0.12mmol,1.2equiv),室溫下反應(yīng)2小時至底物1b消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得36.8mg白色固體3ba,白色固體,收率為91%,81–82°c。
對產(chǎn)物3ba進行分析,結(jié)果如下:93:7dr,93%ee[daicelchiralcelad-h,hexanes/i-proh=75/25,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=9.166,t(minor)=6.158];[α]25d=–98.0(c0.3,chcl3);1hnmr(400mhz,cdcl3)δ7.42(d,j=7.4hz,1h),7.35–7.28(m,1h),7.23(dd,j=7.7,1.6hz,1h),7.17–7.07(m,2h),6.96–6.78(m,4h),5.92–5.87(m,1h),5.82(dq,j=10.5,5.4hz,1h),5.63(dd,j=12.4,2.1hz,1h),5.33–5.13(m,2h),4.51–4.15(m,4h),2.71–2.46(m,1h),2.11(dt,j=13.6,2.1hz,1h),1.30(t,j=7.1hz,3h);13cnmr(101mhz,cdcl3)δ176.8,161.7,153.7,146.0,141.4,132.5,130.5,129.1,128.3,126.3,124.1,123.8,122.6,120.0,117.4,116.3,109.0,108.4,72.9,61.3,47.1,42.2,36.4,13.7;ir(kbr):3456,1732,1701,1609,1486,1458,1357,1298,1268,1240,1209,1181,1098,1086,1028,1013,860,819,771,758,732,691cm-1;hrms(esi):m/z=406.1659(calcdforc24h23no5+h+=406.1649)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例三:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1c(28.9mg,0.1mmol)以及2a(14.4mg,0.12mmol,1.2equiv),室溫下反應(yīng)12小時至底物1c消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得37.5mg白色固體3ca,白色固體,收率為92%,67–68°c。
對產(chǎn)物3ca進行分析,結(jié)果如下:96:4dr,94%ee[daicelchiralcelad-h,hexanes/i-proh=80/20,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=15.888,t(minor)=8.507];[α]25d=–100.0(c0.13,chcl3);1hnmr(400mhz,cdcl3)δ7.42(dd,j=7.6,1.2hz,1h),7.34(td,j=7.8,1.2hz,1h),7.24(dd,j=7.7,1.6hz,1h),7.19–7.06(m,3h),6.94–6.75(m,3h),5.90(d,j=1.7hz,1h),5.62(dd,j=12.3,2.1hz,1h),5.26–5.04(m,2h),4.27(qt,j=6.4,3.3hz,2h),3.33(s,3h),2.57(t,j=13.0hz,1h),2.11(dt,j=13.7,2.0hz,1h),1.30(t,j=7.1hz,3h);13cnmr(101mhz,cdcl3)δ177.8,161.7,153.5,146.1,140.4,132.1,129.1,128.5,126.3,124.2,123.9,123.2,120.0,116.2,109.6,108.1,72.6,71.2,61.3,55.9,47.4,36.6,13.7;ir(kbr):2936,1719,1646,1610,1485,1457,1366,1345,1292,1246,1198,1172,1128,1090,1076,1045,1019,984,913,821,752,691cm-1;hrms(esi):m/z=410.1605(calcdforc23h23no6+h+=410.1598)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例四:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1d(27.7mg,0.1mmol)以及2a(14.4mg,0.12mmol,1.2equiv),室溫下反應(yīng)3小時至底物1d消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得38.5mg白色固體3da,白色固體,收率為92%,235–236°c。
對產(chǎn)物3da進行分析,結(jié)果如下:98:2dr,98%ee[daicelchiralcelad-h,hexanes/i-proh=80/20,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=13.211,t(minor)=8.387];[α]25d=–140.0(c0.17,chcl3);1hnmr(400mhz,cdcl3)δ7.17(dd,j=15.8,8.1hz,4h),6.98(d,j=24.6hz,1h),6.90–6.84(m,2h),6.80(d,j=8.0hz,1h),5.88(s,1h),5.60(d,j=12.1hz,1h),4.27(q,j=7.2hz,2h),3.24(s,3h),2.61(t,j=13.1hz,1h),2.36(s,3h),2.12(d,j=13.7hz,1h),1.30(t,j=7.2hz,3h);13cnmr(101mhz,cdcl3)δ176.8,161.5,154.1,145.7,139.9,132.5,132.3,129.2,128.7,126.1,124.86,123.6,119.9,116.7,108.9,107.8,73.5,61.2,47.0,35.9,26.3,20.7,13.7;ir(kbr):3218,1728,1680,1649,1605,1498,1459,1367,1291,1264,1239,1156,1106,1089,1074,1036,1022,985,969,867,822,800,779,757,666cm-1;hrms(esi):m/z=394.1655(calcdforc23h23no5+h+=394.1649)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例五:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1e(28.9mg,0.1mmol)以及2a(14.4mg,0.12mmol,1.2equiv),室溫下反應(yīng)8小時至底物1e消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得37.5mg白色固體3ea,白色固體,收率為92%,198–199°c。
對產(chǎn)物3ea進行分析,結(jié)果如下:98:2dr,92%ee[daicelchiralcelad-h,hexanes/i-proh=75/25,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=10.385,t(minor)=8.791];[α]25d=–187.5(c0.20,chcl3);1hnmr(400mhz,cdcl3)δ7.23(d,j=7.6hz,1h),7.15(dt,j=15.6,7.3hz,1h),6.99(d,j=28.8hz,2h),6.91–6.76(m,4h),5.95–5.81(m,1h),5.59(d,j=12.1hz,1h),4.32–4.18(m,2h),3.79(s,3h),3.22(s,3h),2.55(t,j=13.1hz,1h),2.09(d,j=13.8hz,1h),1.29(t,j=7.1hz,3h);13cnmr(101mhz,cdcl3)δ176.7,161.6,155.9,153.6,146.1,135.7,133.8,129.0,126.2,123.9,119.9,116.3,112.6,111.7,108.4,108.4,72.8,61.2,55.5,47.5,36.1,26.4,13.6;ir(kbr):2979,1725,1678,1637,1603,1497,1458,1371,1299,1289,1275,1253,1241,1232,1137,1107,1073,1038,1023,818,766,668cm-1;hrms(esi):m/z=410.1606(calcdforc23h23no6+h+=410.1598)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例六:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1f(27.7mg,0.1mmol)以及2a(14.4mg,0.12mmol,1.2equiv),室溫下反應(yīng)1小時至底物1f消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得36.9mg白色固體3fa,白色固體,收率為93%,96–97°c。
對產(chǎn)物3fa進行分析,結(jié)果如下:97:3dr,97%ee[daicelchiralcelad-h,hexanes/i-proh=80/20,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=11.465,t(minor)=14.901];[α]25d=–65.4(c0.13,chcl3);1hnmr(400mhz,dmso-d6)δ9.70(s,1h),7.53(dd,j=8.5,2.6hz,1h),7.46–7.38(m,1h),7.22(dtd,j=22.1,8.3,7.7,2.1hz,2h),7.13(dd,j=8.6,4.3hz,1h),6.91(t,j=7.5hz,1h),6.85(d,j=8.0hz,1h),5.86–5.74(m,1h),5.63(dd,j=11.8,2.2hz,1h),4.23(q,j=7.0hz,2h),3.19(s,3h),2.24–1.92(m,2h),1.26(t,j=7.1hz,3h);19fnmr(376mhz,cdcl3)δ-119.4;13cnmr(101mhz,dmso-d6)δ176.4,161.6,158.6(d,j=236.0hz),153.8,146.8,139.2,134.3(d,j=8.0hz),128.9,126.4,125.8,119.2,115.2,114.7(d,j=23.0hz),112.4(d,j=25.0hz),109.6(d,j=8.0hz),108.1,70.4,61.0,47.6,36.7,26.7,14.0;ir(kbr):2961,1725,1689,1493,1458,1259,1087,1020,862,799,752,699,670,630,616cm-1;hrms(esi):m/z=398.1410(calcdforc22h20fno5+h+=398.1398)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例七:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1g(29.3mg,0.1mmol)以及2a(14.4mg,0.12mmol,1.2equiv),室溫下反應(yīng)1小時至底物1g消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得38.8mg白色固體3ga,白色固體,收率為94%,211–212°c。
對產(chǎn)物3ga進行分析,結(jié)果如下:99:1dr,98%ee[daicelchiralcelad-h,hexanes/i-proh=80/20,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=13.110,t(minor)=11.333];[α]25d=–215.1(c0.23,chcl3);1hnmr(400mhz,cdcl3)δ7.38(d,j=2.1hz,1h),7.33(dd,j=8.3,2.1hz,1h),7.23(dd,j=7.8,1.6hz,1h),7.17(td,j=7.7,1.7hz,1h),6.92–6.80(m,3h),6.68(s,1h),5.85(d,j=1.8hz,1h),5.54(dd,j=12.3,2.1hz,1h),4.27(p,j=7.0hz,2h),3.24(s,3h),2.57(t,j=13.1hz,1h),2.11(dt,j=13.8,2.1hz,1h),1.31(t,j=7.1hz,3h);13cnmr(101mhz,cdcl3)δ176.5,161.4,153.6,146.3,140.9,134.1,129.2,128.4,128.0,126.2,124.5,123.6,120.1,116.4,109.0,107.6,73.0,61.3,47.2,35.9,26.4,13.6;ir(kbr):3411,1705,1638,1605,1485,1458,1361,1344,1300,1274,1256,1179,1139,1117,1096,1011,822,775,763,656,628cm-1;hrms(esi):m/z=414.1113(calcdforc22h20clno5+h+=414.1103)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例八:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1h(33.8mg,0.1mmol)以及2a(14.4mg,0.12mmol,1.2equiv),室溫下反應(yīng)2小時至底物1h消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得42.0mg白色固體3ha,白色固體,收率為92%,217–218°c。
對產(chǎn)物3ha進行分析,結(jié)果如下:99:1dr,99%ee[daicelchiralcelad-h,hexanes/i-proh=80/20,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=14.380,t(minor)=10.363];[α]25d=–148.0(c0.25,chcl3);1hnmr(400mhz,cdcl3)δ7.52(d,j=2.0hz,1h),7.47(dd,j=8.2,2.0hz,1h),7.25(s,1h),7.15(t,j=7.8hz,1h),6.82(dh,j=24.0,7.8hz,4h),5.91–5.76(m,1h),5.62–5.45(m,1h),4.26(p,j=7.0hz,2h),3.24(s,3h),2.56(t,j=13.1hz,1h),2.10(dt,j=13.7,2.1hz,1h),1.31(t,j=7.1hz,3h);13cnmr(101mhz,cdcl3)δ176.5,161.4,153.6,146.4,141.3,134.5,131.3,129.1,127.2,126.2,123.7,120.1,116.3,115.3,109.5,107.6,72.8,61.3,47.2,35.9,26.4,13.7;ir(kbr):3452,1715,1704,1629,1600,1478,1458,1366,1342,1298,1240,1175,1160,1117,1086,1056,1017,999,820,758,733,698cm-1;hrms(esi):m/z=458.0601(calcdforc22h20brno5+h+=458.0598)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例九:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1i(29.3mg,0.1mmol)以及2a(14.4mg,0.12mmol,1.2equiv),室溫下反應(yīng)8小時至底物1i消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得37.9mg白色固體3ia,白色固體,收率為92%,103–104°c。
對產(chǎn)物3ia進行分析,結(jié)果如下:93:7dr,89%ee[daicelchiralcelad-h,hexanes/i-proh=90/10,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=21.280,t(minor)=15.597];[α]25d=–128.3(c0.12,chcl3);1hnmr(400mhz,cdcl3)δ7.30(d,j=8.0hz,1h),7.26–7.22(m,1h),7.16–7.05(m,2h),6.97–6.83(m,3h),6.79(d,j=8.1hz,1h),5.83(d,j=1.7hz,1h),5.64–5.46(m,1h),4.26(q,j=7.1hz,2h),3.23(s,3h),2.65–2.42(m,1h),2.17–1.97(m,1h),1.30(t,j=7.1hz,3h);13cnmr(101mhz,cdcl3)δ177.1,161.6,153.4,146.4,143.5,134.4,130.9,129.0,126.2,124.9,123.9,122.4,120.1,116.1,108.8,107.6,72.5,61.3,46.8,36.2,26.4,13.6;ir(kbr):2961,1717,1699,1685,1652,1647,1605,1491,1457,1367,1295,1247,1170,1088,1073,1042,1016,818,754,712,668cm-1;hrms(esi):m/z=414.1113(calcdforc22h20clno5+h+=414.1103)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例十:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1j(27.7mg,0.1mmol)以及2a(14.4mg,0.12mmol,1.2equiv),室溫下反應(yīng)1小時至底物1j消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得37.3mg白色固體3ja,白色固體,收率為95%,84–85°c。
對產(chǎn)物3ja進行分析,結(jié)果如下:96:4dr,96%ee[daicelchiralcelad-h,hexanes/i-proh=80/20,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=20.484,t(minor)=11.478];[α]25d=–102.6(c0.43,chcl3);1hnmr(400mhz,cdcl3)δ7.25–7.18(m,2h),7.15–7.05(m,2h),7.03–6.92(m,2h),6.89–6.77(m,2h),5.86(d,j=1.7hz,1h),5.59(dd,j=12.3,2.1hz,1h),4.25(qd,j=7.1,1.9hz,2h),3.53(s,3h),2.60(s,3h),2.58–2.48(m,1h),2.06(dt,j=13.7,1.9hz,1h),1.29(t,j=7.1hz,3h);13cnmr(101mhz,cdcl3)δ177.9,161.7,153.7,145.8,134.0,133.2,132.2,129.0,126.2,123.9,122.5,122.1,119.9,119.7,116.3,108.8,72.7,61.2,46.5,36.5,29.7,18.6,13.6;ir(kbr):3340,1699,1642,1597,1456,1361,1298,1247,1174,1137,1118,1093,1064,1010,757,750,701cm-1;hrms(esi):m/z=394.1660(calcdforc23h23no5+h+=394.1649)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例十一:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1k(25.9mg,0.1mmol)以及2a(14.4mg,0.12mmol,1.2equiv),室溫下反應(yīng)1小時至底物1k消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得36.5mg白色固體3ka,白色固體,收率為92%,92–93°c。
對產(chǎn)物3ka進行分析,結(jié)果如下:94:6dr,94%ee[daicelchiralcelad-h,hexanes/i-proh=90/10,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=26.956,t(minor)=9.556];[α]25d=–108.6(c0.14,chcl3);1hnmr(400mhz,cdcl3)δ7.24–7.01(m,6h),6.87(td,j=7.5,1.2hz,1h),6.81(dd,j=8.2,1.2hz,1h),5.86(d,j=1.8hz,1h),5.57(dd,j=12.4,2.1hz,1h),4.27(q,j=7.1hz,2h),3.47(d,j=2.8hz,3h),2.55(dd,j=13.8,12.3hz,1h),2.10(dt,j=13.8,2.1hz,1h),1.30(t,j=7.1hz,3h);19fnmr(376mhz,cdcl3)δ-135.8;13cnmr(101mhz,cdcl3)δ176.6,161.5,153.6,148.6,146.2,135.2(d,j=3.0hz),129.1,129.0(d,j=8.0hz),127.2(d,j=11.0hz),126.20,123.7,123.1(d,j=6.0hz),120.1,119.8(d,j=4.0hz),116.4(d,j=19.0hz),116.3,107.8,72.7,61.3,47.3,47.2,36.3,28.8,28.8,13.6;ir(kbr):3363,1716,1695,1644,1628,1598,1477,1457,1367,1296,1240,1173,1131,1119,1086,1056,1019,754,733,698cm-1;hrms(esi):m/z=420.1226(calcdforc22h20fno5+na+=420.1218)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例十二:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1a(25.9mg,0.1mmol)以及2b(32.2mg,0.24mmol,2.4equiv),室溫下反應(yīng)12小時至底物1a消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得35.4mg白色固體3ab,白色固體,收率為90%,231–232°c。
對產(chǎn)物3ab進行分析,結(jié)果如下:99:1dr,85%ee[daicelchiralcelad-h,hexanes/i-proh=80/20,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=19.636,t(minor)=12.410];[α]25d=–75.0(c0.14,chcl3);1hnmr(400mhz,cdcl3)δ7.46–7.31(m,2h),7.12(t,j=7.6hz,1h),7.01(s,1h),6.93(dd,j=17.1,8.0hz,2h),6.73(d,j=8.2hz,1h),6.62(s,1h),5.87(s,1h),5.56(d,j=12.2hz,1h),4.26(q,j=7.1hz,2h),3.25(s,3h),2.56(t,j=13.0hz,1h),2.23(s,3h),2.08(d,j=13.8hz,1h),1.30(t,j=7.1hz,3h);13cnmr(101mhz,cdcl3)δ177.0,161.6,151.4,146.0,142.3,132.6,129.5,129.1,128.4,126.7,124.0,123.5,122.7,116.3,108.4,108.1,73.08,61.2,47.1,36.3,26.3,20.0,13.6;ir(kbr):3239,2925,1734,1693,1610,1489,1374,1353,1273,1241,1188,1176,1122,1108,1088,1019,817,766,738,689,644cm-1;hrms(esi):m/z=416.1472(calcdforc23h23no5+na+=416.1468)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例十三:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1a(25.9mg,0.1mmol)以及2c(21.1mg,0.12mmol,1.2equiv),室溫下反應(yīng)12小時至底物1a消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得40.0mg白色固體3ac,白色固體,收率為92%,93–94°c。
對產(chǎn)物3ac進行分析,結(jié)果如下:98:2dr,94%ee[daicelchiralcelad-h,hexanes/i-proh=80/20,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=29.446,t(minor)=7.340];[α]25d=–126.3(c0.27,chcl3);1hnmr(400mhz,cdcl3)δ7.42(d,j=7.5hz,1h),7.36(t,j=7.8hz,1h),7.23–7.09(m,3h),6.92(d,j=7.9hz,1h),6.79(d,j=8.4hz,1h),6.67(s,1h),5.92–5.84(m,1h),5.66–5.55(m,1h),4.26(qt,j=7.4,3.6hz,2h),3.27(s,3h),2.61(t,j=13.0hz,1h),2.13(d,j=13.7hz,1h),1.30(t,j=7.2hz,3h),1.25(s,9h);13cnmr(101mhz,cdcl3)δ177.1,161.6,151.5,146.02,142.7,142.3,132.6,128.5,126.0,124.1,123.1,122.9,122.7,116.0,108.3,108.1,73.3,61.2,47.1,36.0,33.7,31.0,26.3,13.6;ir(kbr):2961,1716,1646,1610,1490,1469,1422,1371,1295,1272,1190,1170,1111,1086,988,919,820,751,689,668cm-1;hrms(esi):m/z=436.2115(calcdforc26h29no5+h+=436.2118)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例十四:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1a(25.9mg,0.1mmol)以及2d(18.5mg,0.12mmol,1.2equiv),室溫下反應(yīng)36小時至底物1a消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得39.1mg白色固體3ad,白色固體,收率為95%,92–93°c。
對產(chǎn)物3ad進行分析,結(jié)果如下:97:3dr,88%ee[daicelchiralcelad-h,hexanes/i-proh=90/10,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=12.213,t(minor)=9.915];[α]25d=–102.9(c0.28,chcl3);1hnmr(400mhz,cdcl3)δ7.46(s,1h),7.40(d,j=7.4hz,1h),7.38–7.31(m,1h),7.20(d,j=2.7hz,1h),7.11(t,j=7.6hz,1h),6.99(dd,j=8.6,2.6hz,1h),6.90(d,j=7.8hz,1h),6.66(d,j=8.7hz,1h),5.87(d,j=1.6hz,1h),5.60(dd,j=12.4,2.0hz,1h),4.26(q,j=7.1hz,2h),3.25(s,3h),2.54(t,j=13.0hz,1h),2.01(dt,j=13.7,2.1hz,1h),1.29(t,j=7.1hz,3h);13cnmr(101mhz,cdcl3)δ177.1,162.1,152.3,145.9,142.2,132.3,128.8,128.5,126.2,125.2,124.5,124.0,122.8,117.4108.5,108.2,71.2,61.5,47.1,35.8,26.3,13.6;ir(kbr):2933,1717,1686,1609,1491,1470,1372,1349,1260,1195,1109,1091,1053,1021,815,752cm-1;hrms(esi):m/z=414.1091(calcdforc22h20clno5+h+=414.1103)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例十五:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1a(25.9mg,0.1mmol)以及2e(16.1mg,0.12mmol,1.2equiv),室溫下反應(yīng)3小時至底物1a消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得36.1mg白色固體3ae,白色固體,收率為92%,89–90°c。
對產(chǎn)物3ae進行分析,結(jié)果如下:93:7dr,94%ee[daicelchiralcelad-h,hexanes/i-proh=75/25,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=15.510,t(minor)=22.949];[α]25d=–101.9(c0.16,chcl3);1hnmr(400mhz,cdcl3)δ7.41(dd,j=7.6,1.2hz,1h),7.34(td,j=7.8,1.2hz,1h),7.15–7.05(m,2h),7.04–6.98(m,1h),6.90(d,j=7.7hz,1h),6.64(dd,j=7.9,1.6hz,1h),6.59(d,j=1.6hz,1h),5.86(d,j=1.8hz,1h),5.61(dd,j=12.3,1.9hz,1h),4.25(qd,j=7.1,1.4hz,2h),3.25(s,3h),2.61(dd,j=13.7,12.4hz,1h),2.20(s,3h),2.04(dd,j=13.7,4.0hz,1h),1.29(t,j=7.1hz,3h);13cnmr(101mhz,cdcl3)δ177.2,161.9,153.7,146.1,142.3,139.2,132.6,128.4,125.9,124.1,122.7,120.7,120.6,116.9,108.3,108.1,72.4,61.2,47.2,35.9,26.3,20.6,13.6;ir(kbr):2977,1716,1686,1646,1610,1490,1470,1419,1371,1296,1243,1132,1107,1087,1018,947,806,753,741,729,687cm-1;hrms(esi):m/z=394.1649(calcdforc23h23no5+h+=394.1649)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例十六:
氮氣氛圍下,cu(otf)2(1.80mg,0.005mmol,5mol%)、l(2.56mg,0.005mmol,5mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1a(25.9mg,0.1mmol)以及2f(18.0mg,0.12mmol,1.2equiv),室溫下反應(yīng)1小時至底物1a消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得37.2mg白色固體3af,白色固體,收率為91%,156–157°c。
對產(chǎn)物3af進行分析,結(jié)果如下:98:2dr,91%ee[daicelchiralcelia-h,hexanes/i-proh=80/20,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=45.899,t(minor)=29.764];[α]25d=–126.5(c0.33,chcl3);1hnmr(400mhz,cdcl3)δ7.45–7.31(m,2h),7.11(dd,j=14.6,7.0hz,2h),7.02(d,j=9.2hz,1h),6.91(d,j=7.8hz,1h),6.40(s,2h),5.88(d,j=1.7hz,1h),5.58–5.51(m,1h),4.27(q,j=7.1hz,2h),3.73(s,3h),3.27(s,3h),2.65(t,j=13.1hz,1h),2.13–2.03(m,1h),1.30(t,j=7.1hz,3h);13cnmr(101mhz,cdcl3)δ177.0,161.7,160.3,155.4,145.9,142.3,132.6,128.5,126.9,124.0,122.6,116.0,108.5,108.1,105.8,102.1,73.0,61.3,54.8,47.1,36.0,26.3,13.6;ir(kbr):3412,1734,1705,1610,1520,1491,1472,1423,1372,1306,1286,1256,1234,1205,1171,1110,1100,1088,1036,1019,959,837,810,770,687cm-1;hrms(esi):m/z=410.1590(calcdforc23h23no6+h+=410.1598)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例十七:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1a(25.9mg,0.1mmol)以及2g(18.0mg,0.12mmol,1.2equiv),室溫下反應(yīng)5小時至底物1a消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得37.6mg白色固體3ag,白色固體,收率為92%,215–216°c。
對產(chǎn)物3ag進行分析,結(jié)果如下:99:1dr,92%ee[daicelchiralcelad-h,hexanes/i-proh=80/20,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=18.934,t(minor)=45.530];[α]25d=–127.8(c0.32,chcl3);1hnmr(400mhz,cdcl3)δ7.52–7.44(m,1h),7.34(td,j=7.8,1.2hz,1h),7.21–7.09(m,2h),6.95(s,1h),6.89(dt,j=8.0,4.1hz,2h),6.80(dd,j=8.1,1.5hz,1h),5.84(d,j=1.8hz,1h),5.72(dd,j=12.1,2.1hz,1h),4.25(qd,j=7.2,2.8hz,2h),3.84(s,3h),3.24(s,3h),2.39(dd,j=13.7,12.1hz,1h),2.06(dt,j=13.9,2.1hz,1h),1.28(t,j=7.1hz,3h);13cnmr(101mhz,cdcl3)δ177.26,161.81,146.8,145.6,142.3,141.8,132.8,128.2,125.0,124.1,122.6,119.6,118.4,109.7,107.9,107.6,70.1,60.9,55.6,47.3,36.6,26.2,13.7;ir(kbr):3376,1725,1699,1609,1485,1470,1374,1351,1278,1250,1220,1176,1139,1121,1114,1093,1075,1045,1020,969,779,755,740,730,687cm-1;hrms(esi):m/z=410.1590(calcdforc23h23no6+h+=410.1598)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例十八:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1a(25.9mg,0.1mmol)以及2h(32.2mg,0.24mmol,2.4equiv),室溫下反應(yīng)4小時至底物1a消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得35.7mg白色固體3ah,白色固體,收率為91%,168–169°c。
對產(chǎn)物3ah進行分析,結(jié)果如下:99:1dr,95%ee[daicelchiralcelad-h,hexanes/i-proh=95/5,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=60.586,t(minor)=55.470];[α]25d=–126.9(c0.28,chcl3);1hnmr(400mhz,cdcl3)δ7.44–7.31(m,2h),7.16–7.05(m,2h),7.01–6.95(m,1h),6.91(d,j=7.8hz,1h),6.83–6.72(m,2h),5.90(d,j=1.7hz,1h),5.56(dd,j=12.4,2.1hz,1h),4.27(q,j=7.1hz,2h),3.26(s,3h),2.63(dd,j=13.7,12.4hz,1h),2.25(s,3h),2.10(dt,j=13.8,2.0hz,1h),1.31(t,j=7.1hz,3h);13cnmr(101mhz,cdcl3)δ176.8,161.4,152.4,145.8,142.3,132.5,130.5,128.5,125.3,123.9,123.8,123.0,122.6,119.6,108.8,108.1,74.2,61.2,47.0,36.0,26.3,15.5,13.7;ir(kbr):3214,1731,1716,1683,1607,1470,1372,1325,1296,1269,1252,1243,1205,1189,1168,1107,1082,1043,1015,963,845,787,761,687cm-1;hrms(esi):m/z=416.1478(calcdforc23h23no5+na+=416.1468)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。
實施例十九:
氮氣氛圍下,cu(otf)2(3.61mg,0.01mmol,10mol%)、l(5.12mg,0.01mmol,10mol%)置于無水三氟甲苯(2ml)中,室溫攪拌1小時,加入反應(yīng)物1a(25.9mg,0.1mmol)以及2i(32.2mg,0.24mmol,2.4equiv),室溫下反應(yīng)24小時至底物1a消失,反應(yīng)體系直接用石油醚/乙酸乙酯(3/1)柱層析分離,得35.7mg白色固體3ai,白色固體,收率為91%,87–88°c。
對產(chǎn)物3ai進行分析,結(jié)果如下:92:8dr,67%ee[daicelchiralcelod-h,hexanes/i-proh=95/5,flowrate:1.0ml·min–1,λ=254.4nm,t(major)=78.289,t(minor)=90.193];[α]25d=–35.0(c0.14,chcl3);1hnmr(400mhz,cdcl3)δ7.40(t,j=8.0hz,2h),7.31–7.24(m,2h),7.19(td,j=7.6,2.4hz,2h),6.99–6.90(m,2h),6.86(d,j=8.2hz,1h),5.92(s,1h),5.46(d,j=11.1hz,1h),4.36–4.18(m,2h),3.30(d,j=10.4hz,3h),1.34(s,4h),0.34(d,j=7.0hz,3h);13cnmr(101mhz,cdcl3)δ177.2,162.0,154.1,145.7,143.0,129.3,129.1,128.4,128.2,125.0,122.9,122.6,119.9,116.1,108.9,107.9,61.1,51.9,38.3,26.2,13.6,10.8;ir(kbr):2983,1716,1685,1652,1609,1490,1470,1458,1372,1350,1273,1208,1121,1087,1072,752,688cm-1;hrms(esi):m/z=394.1648(calcdforc23h23no5+h+=394.1649)。
以上數(shù)據(jù)證明目的產(chǎn)物合成成功。