CN101560191A - α-萘甲基取代的螺环双噁唑啉配体、合成方法及其在合成吡唑烷衍生物中的应用 - Google Patents
α-萘甲基取代的螺环双噁唑啉配体、合成方法及其在合成吡唑烷衍生物中的应用 Download PDFInfo
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Abstract
本发明是一种具有多种手性中心的螺环双噁唑啉配体、制备方法及用途。该配体具有螺环骨架的轴手性和噁唑啉环上的中心手性。该类配体可以由手性的螺环二酸与相应的氨基醇缩合制得。本发明同时提供了利用该螺环双噁唑啉配体高区域选择性、高对映选择性合成吡唑烷衍生物。
Description
技术领域
本发明涉及一类手性配体、合成方法及其用途,即一种具有多种手性中心的螺环双噁唑啉配体的合成及用途。同时本专利提供了一种用该配体用于高区域选择性、高对映选择性合成吡唑烷衍生物的方法。
背景技术
手性双噁唑啉配体是一类重要的手性配体,自从G.Helmchen在Tetrahderon,1993,34,1769,3149中首次公开了双噁唑啉配体(BOX)的合成以来,该类配体已经广泛应用于多种不对称反应中。尽管他们这种配体在烯丙基胺化、烯丙基烷基化反应中的产率和对映选择性都比较好,但是其在联烯参与的不对称反应中的应用则不是很理想(J.Org.Chem.1999,64,7312)。因此,寻找新的手性配体使之适应于一些反应或更多反应并能有高的催化活性及对映选择性一直是化学工作者的研究热点之一。南开大学的周其林教授在Tetrahedron:Asymmetry 2006,17,634中报道了苯基、苄基及异丙基取代的螺环双噁唑啉配体的合成,并尝试了该类螺环双噁唑啉配体在铜催化下的不对称环丙烷化及烯丙基氧化反应中的应用,但结果不是很理想。接下来,周其林教授在J.Am.Chem.Soc.2007,129,5834中报道了苯基取代的螺环双噁唑啉配体和铜催化下重氮化合物对氮氢键的插入,取得了很好的对映选择性。但是该类配体与钯等其它金属进行的不对称反应却受到了很大的限制,因此,对该类配体的进一步修饰,使其具有较广的应用范围及优秀的对应选择性就显得尤为重要。同时,吡唑烷是一种广泛存在于天然产物和药物活性中间体中的结构单元。然而高对映选择性地合成具有光学活性的吡唑烷的方法却非常有限。因此,发明一种高效的催化不对称合成光学活性的吡唑烷具有非常重要的意义。
发明内容
本发明的目的之一就是提供一种具有多种手性中心的螺环双噁唑啉配体。
本发明的目的之二是提供该种螺环双噁唑啉配体的合成方法。
本发明的目的之三是提供一种高区域选择性、高对映选择性合成吡唑烷衍生物的方法。
本发明提供了一种具有多种手性中心的螺环双噁唑啉配体,其分子结构式是:
其中,
本发明的配体的合成方法是由手性的螺环二酸与手性的氨基醇缩合制得,反应中可加入催化剂。其反应式如下:
用结构式可表述为:
具体的制备步骤是:在有机溶剂中和0-150℃的温度条件下,手性螺环二酸1与手性氨基醇、N,N-二环己基碳二亚胺(DCC)及氮羟基苯并三唑(HOBt)催化剂的摩尔比一般为1∶2-5∶0-5∶0-5,反应1-50小时,减压除去溶剂,短柱分离得到2。反应温度越低,反应时间越长。所述的手性氨基醇的通式为R如前所述。所述的有机溶剂为极性或非极性溶剂,如苯、四氯化碳、四氢呋喃、乙醚、二氯甲烷、甲苯、环己烷、石油醚、丙酮、吡啶、氯仿、正己烷、正庚烷、二氧六环等。
在有机溶剂中和0-150℃的温度条件下,2与甲磺酰氯(MsCl)、对二甲氨基吡啶(DMAP)及碱的摩尔比一般为1∶1-5∶0-1∶1-5,反应1-50小时,减压除去溶剂,柱层析得到手性螺环双噁唑啉配体3。反应温度越低,反应时间越长。所述的碱推荐为氮原子上含有孤对电子的有机胺化合物,如四甲基二乙胺、联二吡啶、三辛胺、三乙胺或二异丙基乙基胺等。
本发明提供了一种吡唑烷化合物,其分子通式为:
所述的烷基推荐C1~C6的烷基,所述的芳基推荐苯基、3,4-(CH2O)2C6H3或取代苯基,所述的取代苯基上的取代基是C1~C4的烷基、C1~C4的烷氧基、卤素(F、Cl、Br或I)、甲酰基、甲氧羰基或CN。所述的杂芳基推荐噻吩基。
本发明还提供了一种高区域选择性、高对映选择性合成吡唑烷衍生物的方法。即将螺环双噁唑啉配体应用在钯催化的联烯参与的高区域、高对映选择性不对称烯丙基化反应中,用各种联烯基酰肼和芳基碘化物作为底物,可以得到具有高光学活性的吡唑烷衍生物,反应式如下:
用结构式表示如下:
具体的制备步骤是:在有机溶剂中和0-100℃的温度条件下,钯与手性螺环配体3按1∶1-1∶10混合,反应0-50小时,再将联烯酰肼4及芳基碘化物5按1∶1-1∶10加入,反应在0-200℃的温度条件下进行,反应进行10-100小时,减压除去溶剂,柱层析分离得到2。反应温度越低,反应时间越长。所述的联烯酰肼及芳基碘化物R1、R2、R3如前所述。所述的有机溶剂为极性或非极性溶剂,如苯、四氯化碳、四氢呋喃、乙醚、二氯甲烷、甲苯、环己烷、石油醚、丙酮、吡啶、氯仿、正己烷、正庚烷或二氧六环等。
本发明提供了一种新的配体,该配体的合成方法简便,条件温和,适于工业化。由于该类配体具有螺环骨架及多种手性中心的特点,在过渡金属催化的不对称反应中具有很高的催化活性和手性诱导效果,而且具有很强的调节能力。上述特点可以用以下实例给予说明,该配体具有三个手性中心:
该配体可以用于制备高光学活性的吡唑烷衍生物,具有很好的普适性和官能团容忍性。由于吡唑烷衍生物的重要生理活性,使其具有较好的工业及药物应用前景。上述特点可以用以下实例给予说明:
具体实施方式
以下实施例有助于理解本发明,但不限于本发明的内容。
实施例一:
在惰性气体保护下,往反应管中加入308mg(Ra)-1,442mg氨基醇,869mgDCC及297mg氮羟基苯并三唑。冰浴下加入40mL四氢呋喃,保持0℃反应1-10小时,自然升至室温,反应过夜,TLC检测反应完成(石油醚∶乙酸乙酯=1∶1)。减压除去溶剂,短柱过滤直接用于下一步反应。
在装有上步所得产品的反应管中加入13mg DMAP,抽换气后,加入30mL二氯甲烷,冰浴下加入0.68mL三乙胺,搅拌片刻后加入0.34mL甲磺酰氯,保持0℃反应0.5-5小时,再补加2.9mL三乙胺,自然升至室温,反应过夜,TLC检测反应完成。往体系中加入100mL乙醚萃取,有机层用水,稀盐酸和饱和食盐水洗涤,最后用无水硫酸钠干燥,减压除去溶剂,柱层析得到无色粘稠物214mg。反应的产物即本发明的一种具有多种手性中心的螺环双噁唑啉配体。
(Ra,S,S)-3a:[α]20 D=+64.4(c=1.30,CHCl3);1H NMR(400MHz,CDCl3):δ8.03(d,J=8.0Hz,2H),7.89-7.84(m,2H),7.83(d,J=8.0Hz,2H),7.72-7.67(m,2H),7.55-7.46(m,4H),7.41-7.36(m,2H),7.21-7.13(m,6H),4.20-4.09(m,2H),3.87(t,J=8.8Hz,2H),3.54(dd,J=14.4,5.6Hz,2H),3.11-2.97(m,4H),2,88(dd,J=14.4,9.2Hz,2H),2.85-2.74(m,2H),2.77-2.59(m,2H),2.22(dd,J=9.0,84Hz,2H);13C NMR(100.5MHz,CDCl3):δ163.6,149.1,145.5,134.8,133.8,131.9,128.6,128.0,127.0,126.8,126.7,125.8,125.7,125.5,125.3,124.0,123.8,71.8,67.0,63.1,38.5,38.4,30.6;MS(EI):m/z(%)638(M+,2.04),44(100);IR(neat):1713,1649,1596,1581,1510,1469,1445,1429,1396,1358,1316,1286,1262,1218,1185,1165,1113cm-1;高分辨C68H38N2O2[M+],计算值:638.2933;实测值:638.2934.
实施例二:
(R1=Bn,R2=Bn,R3=Ph)
将Pd(dba)2(3mg,0.0053mmol)与(Ra,S,S)-3(4mg,0.0063mmol)(实施例一中合成的配体)于1mL四氢呋喃中络合0.5-3小时,再加入Ag3PO4(19mg,0.045mmol),4a(64mg,0.10mmol),碘苯5a(25mg,0.12mmol)及1mL四氢呋喃.将反应于0-200℃反应,TLC跟踪反应结束,直接旋干柱层析得无色粘稠液体61mg(R)-6aa(85%yield,93%ee)。1H NMR(400MHz,CDCl3):δ7.28-7.06(m,21H),7.05-6.98(m,4H),5.55(s,1H),5.44-5.38(m,1H),5.13-4.78(m,9H),3.00(dd,J=13.2,8.4Hz,1H),2.47(dd,J=13.2,2.8Hz,1H);13C NMR(100.5MHz,CDCl3):δ167.8,166.0,157.0,153.3,143.6,138.4,135.5,135.3,134.9,134.4,128.40,128.36,128.2,128.15,128.12,128.07,128.0,127.8,127.6,126.6,113.7,72.2,68.5,68.3,68.2,68.0,61.3,41.3;MS(ESI):m/z 749(M+K+),733(M+Na+);IR(neat):1738,1586,1498,1455,1397,1337,1276,1189,1104,1069cm-1;高分辨C43H39N2O8,计算值[M++1]:711.2701;实测值:711.2735.
同以上条件,从各种取代的联烯基酰肼和各种芳基碘化物出发,在钯及手性螺环配体3的催化下,得到各种光学活性的取代的吡唑烷衍生物(R)-6,其数据如下:
(R1=Bn,R2=Bn,R3=4-MeC6H4)
(R)-6ab(71%yield,93%ee);H NMR(400MHz,CDCl3):δ7.24-7.07(m,18H),7.01-6.91(m,6H),5.51(s,1H),5.42-5.37(m,1H),5.11-4.78(m,9H),2.99(dd,J=13.6,8.8Hz,1H),2.49(dd,J=13.6,3.2Hz,1H),2.23(s,3H);13C NMR(100.5MHz,CDCl3):δ167.8,166.0,157.0,153.3,143.4,137.6,135.6,135.5,135.4,134.9,134.5,129.1,128.41,128.37,128.3,128.2,128.14,128.09,128.06,127.9,127.6,126.4,112.9,72.2,68.4,68.25,68.15,68.0,61.3,41.4,21.0;MS(ESI):m/z 763(M+K+),747(M+Na+),725(M++1);IR(neat):1738,1609,1586,1513,1498,1455,1399,1337,1275,1191,1100,1069,1003cm-1;高分辨C44H40N2O8Na[M+Na+],计算值:747.2677;实测值:747.2704.
(R1=Bn,R2=Bn,R3=3-MeC6H4)
(R)-6ac(90%yield,92%ee);1H NMR(400MHz,CDCl3):δ7.24-7.07(m,18H),7.04(d,J=7.6Hz,1H),7.02-6.96(m,3H),6.88(s,1H),6.84(d,J=7.6Hz,1H),5.54(s,1H),5.44-5.39(m,1H),5.13-4.78(m,9H),3.00(dd,J=13.2,8.8Hz,1H),2.49(dd,J=13.2,2.4Hz,1H),2.19(s,3H);13C NMR(100.5MHz,CDCl3):δ167.8,166.0,157.0,153.3,143.7,138.4,138.0,135.6,135.4,134.9,134.5,128.6,128.42,128.36,128.3,128.2,128.15,128.12,128.07,128.0,127.6,127.2,123.7,113.4,72.2,68.5,68.3,68.2,68.0,61.3,41.4,21.4;MS(ESI):m/z 763(M+K+),747(M+Na+);IR(neat):1739,1602,1585,1498,1455,1398,1338,1274,1187,1069cm-1;高分辨C44H40N2O8Na[M+Na+],计算值:747.2677;实测值:747.2701.
(R1=Bn,R2=Bn,R3=4-BrC6H4)
(R)-6ad(83%yield,93%ee);1H NMR(300MHz,CDCl3):δ7.31-7.07(m,20H),7.01-6.96(m,2H),6.87-6.82(m,2H),5.55(s,1H),5.38-5.32(m,1H),5.13-4.90(m,6H),4.86-4.76(m,3H),2.99(dd,J=13.5,8.7Hz,1H),2.42(dd,J=13.5,2.7Hz,1H);13C NMR(100.5MHz,CDCl3):δ167.6,165.9,157.0,153.2,142.8,137.4,135.5,135.3,134.8,134.4,131.5,128.5,128.43,128.40,128.37,128.23,128.19,128.1,128.0,127.6,121.8,114.5,72.2,68.5,68.3,68.2,68.1,61.1,41.2;MS(ESI):m/z 829(M(81Br)+K+),827(M(79Br)+K+),813(M(81Br)+Na+),(811(M(79Br)+Na+),790(M(81Br)++1),788(M(79Br)++1);IR(neat):1738,1587,1498,1455,1397,1339,1273,1189,1070,1008cm-1;高分辨C43H37N2O8 79BrNa[M+Na+],计算值:811.1626;实测值:811.1619.
(R1=Bn,R2=Bn,R3=4-MeOCC6H4)
(R)-6ae(75%yield,95%ee);1H NMR(400MHz,CDCl3):δ7.73(d,J=8.0Hz,2H),7.25-7.07(m,20H),7.01-6.96(m,2H),5.63(s,1H),5.45-5.40(m,1H),5.18(s,1H),5.11-4.77(m,8H),3.03(dd,J=13.6,8.8Hz,1H),2.48(s,3H),2.42(dd,J=13.6,2.8Hz,1H);13C NMR(100.5MHz,CDCl3):δ197.4,167.6,165.9,157.0,153.2,143.2,143.0,136.2,135.4,135.3,134.8,134.3,128.48,128.45,128.38,128.37,128.22,128.18,128.1,128.0,127.7,126.7,115.7,72.2,68.6,68.3,68.2,68.1,61.0,41.3,26.5;MS(ESI):m/z 775(M+Na+),753(M++1);IR(neat):1738,1683,1604,1560,1498,1455,1402,1340,1266,1187,1103,1068,1013cm-1;高分辨C45H40N2O9Na[M+Na+],计算值:775.2626;实测值:775.2624.
(R1=Bn,R2=Bn,R3=4-MeO2CC6H4)
(R)-6af(76%yield,93%ee);1H NMR(400MHz,CDCl3):δ7.81(d,J=8.0Hz,2H),7.26-7.07(m,18H),7.05(d,J=8.0Hz,2H),7.01-6.97(m,2H),5.63(s,1H),5.44-5.39(m,1H),5.16(s,1H),5.12-4.76(m,8H),3.82(s,3H),3.02(dd,J=13.6,8.8Hz,1H),2.41(dd,J=13.6,2.4Hz,1H);13C NMR(100.5MHz,CDCl3):δ167.6,166.6,165.9,157.0,153.2,143.02,142.97,135.4,135.3,134.8,134.3,129.7,129.3,128.5,128.44,128.42,128.39,128.38,128.2,128.1,128.0,127.7,126.5,115.5,72.2,68.6,68.4,68.3,68.1,61.0,52.1,41.3;MS(ESI):m/z 808(M+K+),791(M+Na+),769(M++1);IR(neat):1722,1608,1498,1455,1402,1342,1280,1187,1112,1068,1017cm-1;高分辨C45H40N2O10Na[M+Na+],计算值:791.2575;高分辨:791.2557.
(R1Bn,R2=Bn,R3=4-NCC6H4)
(R)-6ag(78%yield,94%ee);1H NMR(300MHz,CDCl3):δ7.38(d,J=9.0Hz,2H),7.29-7.08(m,18H),7.07-6.95(m,4H),5.63(s,1H),5.40-5.33(m,1H),5.14(s,1H),5.13-4.90(m,5H),4.88-4.76(m,3H),3.02(dd,J=13.8,8.7Hz,1H),2.38(dd,J=13.8,2.7Hz,1H);13C NMR(100.5MHz,CDCl3):δ167.6,165.9,156.9,153.2,143.1,142.7,135.4,135.2,134.8,134.3,132.2,128.6,128.4,128.30,128.27,128.2,128.0,127.7,127.3,118.5,116.7,111.4,72.2,68.7,68.4,68.3,68.2,60.9,41.2;MS(ESI):m/z 774(M+K+),758(M+Na+),736(M++1);IR(neat):2227,1738,1606,1498,1455,1399,1339,1275,1190,1068,1003cm-1;高分辨C44H37N3O8Na[M+Na+],计算值:758.2473;实测值:758.2454.
.(R1=Bn,R2=Bn,R3=4-PhC6H4)
(R)-3ah(88%yield,92%ee);1H NMR(400MHz,CDCl3):δ7.49-7.45(m,2H),7.40-7.32(m,4H),7.28-7.07(m,21H),7.01-6.97(m,2H),5.59(s,1H),5.48-5.44(m,1H),5.18(s,1H),5.13-4.79(m,8H),3.04(dd,J=13.6,8.8Hz,1H),2.54(dd,J=13.6,2.4Hz,1H);13C NMR(100.5MHz,CDCl3):δ167.8,166.0,157.0,153.3,143.1,140.6,140.4,137.3,135.5,135.4,134.9,134.4,128.7,128.6,128.43,128.41,128.38,128.36,128.2,128.13,128.09,128.0,127.6,127.4,127.1,126.9,113.7,72.2,68.5,68.3,68.2,68.0,61.2,41.4;MS(ESI):m/z 826(M+K+),809(M+Na+),786(M++1);IR(neat):1737,1600,1586,1498,1487,1455,1399,1336,1272,1189,1102,1069,1006cm-1;高分辨C49H42N2O8Na[M+Na+],计算值:809.2833;实测值:809.2829.
(R1=Bn,R2=Bn,R3=4-(4’-BrC6H4)MeC6H4)
(R)-6ai(71%yield,92%ee);1H NMR(400MHz,CDCl3):δ7.47(d,J=8.4Hz,2H),7.36-7.31(m,4H),7.24-7.07(m,20H),7.01-6.97(m,2H),5.59(s,1H),5.47-5.42(m,1H),5.17(s,1H),5.13-4.79(m,8H),3.04(dd,J=13.6,8.8Hz,1H),2.52(dd,J=13.6,2.8Hz,1H);13C NMR(100.5MHz,CDCl3):δ167.7,166.0,157.1,153.3,143.1,139.33,139.28,137.8,135.5,135.4,134.9,134.4,131.9,128.5,128.44,128.42,128.37,128.20,128.18,128.15,128.1,128.0,127.6,127.1,126.9,121.7,114.0,72.2,68.5,68.3,68.2,68.1,61.2,41.4;MS(ESI):m/z 889(M(81Br)+Na+),887(M(79Br)+Na+);IR(neat):1738,1587,1498,1483,1455,1392,1340,1275,1186,1070,1002cm-1;高分辨C49H41N2O8 79BrNa[M+Na+],计算值:887.1939;实测值:887.1941.
(R1=Bn,R2=Bn,R3=3,4-Me2C6H3)
(R)-6aj(76%yield,95%ee);1H NMR(400MHz,CDCl3):δ7.25-7.07(m,18H),7.01-6.97(m,2H),6.93(d,J=7.6Hz,1H),6.85(s,1H),6.78(d,J=7.6Hz,1H),5.50(s,1H),5.43-5.37(m,1H),5.12-4.77(m,9H),3.00(dd,J=13.6,8.8Hz,1H),2.50(dd,J=13.6,2.8Hz,1H),2.14(s,3H),2.10(s,3H);13C NMR(100.5MHz,CDCl3):δ167.8,166.0,157.1,153.3,143.5,136.6,136.3,136.0,135.6,135.4,134.9,134.5,129.7,128.43,128.38,128.35,128.27,128.2,128.14,128.10,128.06,128.0,127.7,127.6,124.0,112.7,72.2,68.5,68.3,68.1,68.0,61.3,41.5,19.8,19.4;MS(ESI):m/z 777(M+K+),761(M+Na+);IR(neat):1740,1608,1586,1499,1455,1399,1337,1274,1188,1069,1003cm-1;高分辨C45H42N2O8Na[M+Na+],计算值:761.2833;实测值:761.2821.
(R1=Bn,R2=Bn,R3=3,5-Me2C6H3)
(R)-6ak(83%yield,93%ee);1H NMR(400MHz,CDCl3):δ7.24-7.07(m,18H),7.02-6.97(m,2H),6.81(s,1H),6.68(s,2H),5.52(s,1H),5.43-5.38(m,1H),5.13-4.78(m,9H),3.01(dd,J=13.6,8.8Hz,1H),2.49(dd,J=13.6,2.8Hz,1H),2.16(s,6H);13C NMR(100.5MHz,CDCl3):δ167.8,166.0,157.1,153.3,143.8,138.5,137.9,135.6,135.4,134.9,134.5,129.5,128.42,128.38,128.35,128.21,128.18,128.14,128.11,128.06,128.0,127.6,124.4,113.2,72.2,68.4,68.3,68.2,68.0,61.3,41.5,21.3;MS(ESI):m/z 777(M+K+),761(M+Na+),739(M++1);IR(neat):1740,1599,1498,1455,1397,1338,1275,1188,1070,1003cm-1;高分辨C45H42N2O8Na[M+Na+],计算值:761.2833;实测值:761.2818.
(R1=Bn,R2=Bn,R3=3,4-(CH2O)2C6H3)
(R)-3al(74%yield,93%ee);1H NMR(400MHz,CDCl3):δ7.25-7.07(m,18H),7.03-6.98(m,2H),6.67-6.62(m,2H),6.53-6.50(m,1H),5.47(s,1H),5.36-5.31(m,1H),5.11-4.79(m,9H),4.13(s,4H),2.99(dd,J=13.2,8.4Hz,1H),2.52(dd,J=13.2,2.0Hz,1H);13C NMR(100.5MHz,CDCl3):δ167.8,166.0,157.0,153.3,143.3,142.7,135.6,135.4,134.9,134.5,131.9,128.42,128.39,128.37,128.3,128.2,128.12,128.09,128.06,128.0,127.6,119.7,117.1,115.4,112.6,72.2,68.5,68.24,68.17,68.0,64.3,64.2,61.2,41.4;MS(ESI):m/z 807(M+K+),791(M+Na+),769(M++1);IR(neat):1739,1609,1579,1508,1455,1398,1284,1248,1188,1067,1003cm-1;高分辨C45H40N2O10Na[M+Na+],计算值:791.2575;实测值:791.2551.
(R1=Et,R2=Et,R3=4-MeOCC6H4)
(R)-3be(83%yield,93%ee);1H NMR(400MHz,CDCl3):δ7.93(d,J=8.4Hz,2H),7.44(d,J=8.4Hz,2H),5.78(s,1H),5.46-5.41(m,2H),4.32-3.98(m,6H),4.14(q,J=6.8Hz,2H),3.07(dd,J=13.2,8.4Hz,1H),2.60(s,3H),2.49(dd,J=13.2,3.2Hz,1H),1.33-1.22(m,9H),1.19(t,J=7.2Hz,3H);13C NMR(100.5MHz,CDCl3):δ197.5,168.0,166.1,157.1,153.5,143.8,143.5,136.4,128.6,126.9,115.4,72.1,63.1,62.6,62.5,60.9,41.5,26.6,14.4,13.9,13.7;MS(ESI):m/z 527(M+Na+),505(M++1);IR(neat):1745,1685,1604,1568,1467,1405,1377,1337,1267,1192,1072,1038cm-1;高分辨C25H32N2O9Na[M+Na+],计算值:527.2000;实测值:527.2007.
(R1=Bn,R2=Et,R3=34-BrC6H4)
(R)-6cd(86%yield,95%ee);1H NMR(400MHz,CDCl3):δ7.43(d,J=8.0Hz,2H),7.35-7.26(m,10H),7.18(d,J=8.0Hz,2H),5.66(s,1H),5.44-5.39(m,1H),5.30(s,1H),5.28-5.16(m,3H),5.07(d,J=12.4Hz,1H),4.17-4.09(m,1H),4.08-3.99(m,3H),3.07(dd,J=13.6,8.8Hz,1H),2.52(dd,J=13.6,3.2Hz,1H),1.111(t,J=6.8Hz,3H),1.107(t,J=6.8Hz,3H);13C NMR(100.5MHz,CDCl3):δ167.9,166.0,156.9,153.3,143.2,137.6,135.5,135.4,131.6,128.44,128.35,128.3,128.2,128.1,127.6,121.9,114.4,72.2,68.6,68.3,62.5,61.1,41.3,13.7,13.6;MS(ESI):m/z 689(M(81Br)+Na+),687(M(79Br)+Na+),667(M+(81Br)+1),665(M+(79Br)+1);IR(neat):1738,1587,1489,1455,1394,1338,1273,1196,1072,1009cm-1;高分辨C33H33N2O8 79BrNa[M+Na+],计算值:687.1313;实测值:687.1309.
(R1=Bn,R2=Bn,R3=3-噻吩基)
(R)-6am(85%yield,92%ee);1H NMR(400MHz,CDCl3):δ7.29-7.09(m,19H),7.00-6.95(m,2H),6.91(dd,J=5.2,1.4Hz,1H),6.85(bs,1H),5.50(s,1H),5.30-5.25(m,1H),5.17(s,1H),5.12-4.78(m,8H),3.11(dd,J=13.6,8.8Hz,1H),2.60(dd,J=13.6,2.8Hz,1H);13C NMR(100.5MHz,CDCl3):δ167.7,165.9,156.9,153.2,139.3,138.6,135.5,135.3,134.9,134.4,128.43,128.41,128.36,128.3,128.22,128.18,128.14,128.09,128.0,127.6,126.0,125.8,120.7,112.3,72.3,68.5,68.3,68.2,68.1,61.2,41.7;MS(ESI):m/z 755(M+K+),739(M+Na+),717(M++1);IR(neat):1738,1632,1586,1498,1455,1399,1340,1278,1187,1069,1003cm-1;高分辨C41H36N2O8SNa[M+Na+],计算值:739.2085;实测值:739.2070.
Claims (9)
4.根据权利要求4所述的制备方法,其特征是所述的有机溶剂为苯、四氯化碳、四氢呋喃、乙醚、二氯甲烷、甲苯、环己烷、石油醚、丙酮、吡啶、氯仿、正己烷、正庚烷或二氧六环;所述的碱为氮原子上含有孤对电子的有机胺化合物。
5.根据权利要求5所述的制备方法,其特征是所述的氮原子上含有孤对电子的有机胺化合物为四甲基二乙胺、联二吡啶、三辛胺、三乙胺或二异丙基乙基胺。
6.权利要求1或2所述的化合物用途,其特征是用于催化不对称烯丙基化反应。
8.根据权利要求7所述的用途,其特征是具体的制备步骤是:在有机溶剂中和0-100℃的温度条件下,钯与手性螺环配体3按1∶1-1∶10混合,反应0-50小时,再将联烯酰肼4及芳基碘化物5按1∶1-1∶10加入,反应在0-200℃的温度条件下进行,反应进行10-100小时,减压除去溶剂,柱层析分离得到6,所述的联烯酰肼4及芳基碘化物5如权利要求7所述。
9.根据权利要求8所述的用途,其特征是所述的有机溶剂为苯、四氯化碳、四氢呋喃、乙醚、二氯甲烷、甲苯、环己烷、石油醚、丙酮、吡啶、氯仿、正己烷、正庚烷或二氧六环;所述的芳基碘化物5的芳基为苯基、3,4-(CH2O)2C6H3或取代苯基,所述的取代苯基上的取代基是C1~C4的烷基、C1~C4的烷氧基、卤素、甲酰基、甲氧羰基或CN,所述杂芳基为噻吩基。
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