CN108264489B - 一种在水中合成喹唑啉的方法 - Google Patents

一种在水中合成喹唑啉的方法 Download PDF

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CN108264489B
CN108264489B CN201611269654.XA CN201611269654A CN108264489B CN 108264489 B CN108264489 B CN 108264489B CN 201611269654 A CN201611269654 A CN 201611269654A CN 108264489 B CN108264489 B CN 108264489B
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李峰
张伟康
樊红军
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Nanjing University of Science and Technology
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    • C07D239/70Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings condensed with carbocyclic rings or ring systems
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Abstract

本发明公开了一种合成喹唑啉衍生物的方法,其步骤为:在反应容器中,加入醛、邻氨基苄胺、水溶性金属络合物催化剂(铱或钌络合物催化剂)、溶剂水,反应混合物在容器中反应数小时后,冷却到室温,旋转蒸发除去溶剂,然后通过柱分离,得到目标化合物。和已经报道过的文献相比,本发明使用水溶性的铱或钌络合物,反应只需要在水中加热进行,反应释放环境友好的氢气,无需要氧化剂或者氢的受体参与,展现了高的原子经济性和环境友好;因此,该反应符合绿色化学的要求,具有广阔的发展前景。

Description

一种在水中合成喹唑啉的方法
技术领域
本发明属有机合成化学技术领域,具体涉及在水中一种喹唑啉的合成方法。
背景技术
喹唑啉代表着一类重要的结构单元,广泛存在于天然产物和合成药物中(a)J.P.Michael,Nat.Prod.Rep.2004,21,650-668;b)J.P.Michael,Nat.Prod.Rep.2005,22,627-646;c)J.P.Michael,Nat.Prod.Rep.2007,24,223-246;d)J.P.Michael,Nat.Prod.Rep.2008,25,166-187,I.Khan,A.Ibrar,W.Ahmed,A.Saeed,Eur.J.Med.Chem.2015,90,124-169)。
喹唑啉也展现出广泛的生物活性。最近的例子包括热力学二肽酶-4抑制剂,人体恶性胶质瘤抗增殖剂,干细胞因子受体抗趋化剂等等。(a)G.Schnapp,T.Klein,Y.Hoevels,R.A.Bakker,H.Nar,J.Med.Chem.2016,59,7466-7477;b)J.B.Smaill,A.J.Gonzales,J.A.Spicer,H.Lee,J.E.Reed,K.Sexton,I.W.Althaus,T.Zhu,S.L.Black,A.Blaser,W.A.Denny,P.A.Ellis,S.Fakhoury,P.J.Harvey,K.Hook,F.O.J.McCarthy,B.D.Palmer,F.Rivault,K.Schlosser,T.Ellis,A.M.Thompson,E.Trachet,R.T.Winters,H.Tecle,A.Bridges,J.Med.Chem.2016,59,8103-8124;c)S.Castellano,S.Taliani,M.Viviano,C.Milite,E.D.Pozzo,B.Costa,E.Barresi,A.Bruno,S.Cosconati,L.Marinelli,G.Greco,E.Novellino,G.Sbardella,F.D.Settimo,C.Martini,J.Med.Chem.2014,57,2413-2428;c)C.Wu,J.Song,K.Chang,J.Jan,C.Chen,M.Chou,K.Yeh,Y.Wong,C.Tseng,S.Wu,C.Yeh,C.Huang,M.Wang,A.A.Sadani,C.Chang,C.Cheng,L.K.Tsou,K.Shia,J.Med.Chem.2015,58,2315-2325)。
Figure BDA0001199231070000021
由于喹唑啉的重要性,大量的合成方法已经发展。最通用和有效的方法是2-氨基苄胺与醛发生反应生成半缩醛,然后在氧化剂的参与下,生成目标产物。然而,这些程序要求使用大量有毒的氧化剂,例如DDQ,四氯苯醌,二氧化锰,次氯酸钠或不饱和烯烃作为缚氢剂。而且,这些程序通常要在有机溶液中进行,导致产生大量的废液。(For selectedexamples,see:a)C.C.Malakar,A.Baskakova,J.Conrad,U.Beifuss,Chem.-Eur.J.2012,18,8882;b)B.Han,X.L.Yang,C.Wang,Y.W.Bai,T.C.Pan,X.Chen,W.Yu,J.Org.Chem.2012,77,1136;c)Y.Ohta,Y.Tokimizu,S.Oishi,N.Fujii,H.Ohno,Org.Lett.2010,12,3963-3965;d)Y.Z.Yan,Y.H.Zhang,C.T.Feng,Z.G.Zha,Z.Y.Wang,Angew.Chem.Int.Ed.2012,51,8077;e)J.Lin,F.Zhang,Y.Long,Org.Lett.2014,16,2822-2825;f)M.M.Chen,M.Zhang,B.Xiong,Z.D.Tan,W.Lv,H.F.Jiang,Org.Lett.2014,16,6028;g)L.Xu,H.Li,Z.Liao,K.Lou,H.Xie,H.Li,W.Wang,Org.Lett.2015,17,3434-3437;h)Z.Shen,P.Yang,Y.Tang,J.Org.Chem.2016,81,309-317;i)C.Xu,F.Jia,Z.Zhou,S.Zheng,H.Li,A.Wu,J.Org.Chem.2016,81,3000-3006;j)Z.Lv,B.Wang,Z.Hu,Y.Zhou,W.Yu,J.Chang,J.Org.Chem.2016,81,9924-9930;k)X.Cheng,H.Wang,F.Xiao,G.Deng,Green Chem.2016,18,5773-5776;l)J.Wang,S.Zha,K.Chen,F.Zhang,C.Song,J.Zhu,Org.Lett.2016,18,2062-2065;m)X.Wang,A.Lerchen,F.Glorius,Org.Lett.2016,18,2090-2093;n)X.Wang,N.Jiao,Org.Lett.2016,18,2150-2153)
Figure BDA0001199231070000031
发明内容
本发明的目的在于提供一种合成喹唑啉衍生物的方法。
本发明通过下述技术方案实现:一种合成喹唑啉衍生物(式Ⅰ)的方法,
Figure BDA0001199231070000032
其包含化合物醛(式II)
Figure BDA0001199231070000033
与化合物邻氨基苄醇(式III)反应
Figure BDA0001199231070000034
反应是在水溶性金属络合物催化剂和无碱的条件下发生,其反应通式为
Figure BDA0001199231070000035
其中,R1选自甲基,卤代基;
R2代表一个取代基,选自C1-C7烷基、芳基、甲基苯基、甲氧基苯基、三氟甲基苯基、三氟甲氧基苯基、卤代苯基、萘基、呋喃基或噻吩基。
本发明的具体方案通过下述步骤实现:
在反应容器中,加入醛、邻氨基苄胺、水溶性金属络合物催化剂(铱或钌络合物催化剂)、溶剂水,反应混合物在容器中反应数小时后,冷却到室温,旋转蒸发除去溶剂,然后通过柱分离,得到目标化合物。
其中,铱或钌络合物催化剂优选[Cp*Ir(bpy)Cl]Cl(bpy=2,2’-bipyridine)(cat.1)、[Cp*Ir(NH3)3][Cl]2(cat.2)、[Cp*Ir(H2O)3][OTf]2(cat.3)、[Cp*Ir(bpy)(H2O)][OTf]2(cat.4)、[Cp*Ir(6,6’-(OMe)2bpy)(H2O)][OTf]2(cat.5)、[Cp*Ir(6,6’-(OH)2bpy)(H2O)][OTf](cat.6)或[(p-cymene)Ru(6,6’-(OH)2bpy)(H2O)][OTf](cat.7)中任意一种,其结构分别如下:
Figure BDA0001199231070000041
进一步的,催化剂的用量相对于醛的摩尔比为1-2mol%;化合物邻氨基苄醇相对于醛摩尔比为1:1。
和已经报道过的文献相比,本发明使用水溶性的铱或钌络合物,反应只需要在水中加热进行,反应释放环境友好的氢气,无需要氧化剂或者氢的受体参与,展现了高的原子经济性和环境友好;因此,该反应符合绿色化学的要求,具有广阔的发展前景。
具体实施方式
展示一下实例来说明本发明的某些实施例,且不应解释为限制本发明的范围。对本发明公开的内容可以同时从材料,方法和反应条件上进行许多改进,变化和改变。所有这些改进,变化和改变均确定地落入本发明的精神和范围之内。
实施例1:2-(4-氯苯基)喹唑啉
2-(4-chlorophenyl)quinazoline
Figure BDA0001199231070000051
将对氯苯甲醛(70mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:76%。
1H NMR(500MHZ,CDCl3)δ9.46(s,1H),8.57(d,J=8.6Hz,2H),8.07(d,J=8.6Hz,1H),7.90(m,2H),7.62(t,J=7.5Hz,1H),7.50(d,J=8.7Hz,2H);13C{1H}NMR(125MHZ,CDCl3)δ160.5,160.1,150.7,136.8,136.5,134.2,129.9,128.8,128.6,127.4,127.1,123.6。
实施例2:2-(3,4-二氯苯基)喹唑啉
2-(3,4-dichlorophenyl)quinazoline
Figure BDA0001199231070000052
将3,4-二氯苯甲醛(86mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:83%。
1H NMR(500MHZ,CDCl3)δ9.45(s,1H),8.75(d,J=2.0Hz,1H),8.46(dd,J=8.5Hzand 2.0Hz,1H),8.07(d,J=8.3Hz,1H),7.92(t,J=7.8Hz,2H),7.64(t,J=7.5Hz,1H),7.58(d,J=8.4Hz,1H);13C{1H}NMR(125MHZ,CDCl3)δ160.5,158.8,150.6,138.0,134.7,134.4,132.9,130.5,130.4,128.6,127.7,127.6,127.1,123.7。
实施例3:2-(4-溴苯基)喹唑啉
2-(4-bromophenyl)quinazoline
Figure BDA0001199231070000061
将对溴苯甲醛(92mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:81%
1H NMR(500MHZ,CDCl3)δ9.45(s,1H),8.49(d,J=8.3Hz,2H),8.06(d,J=8.3Hz,1H),7.90(m,2H),7.61(m,3H);13C{1H}NMR(125MHZ,CDCl3)δ160.5,160.1,150.7,137.0,134.2,131.7,130.1,128.6,127.4,127.1,125.4,123.6。
实施例4:2-(4-甲磺酰基苯基)喹唑啉
2-(4-(methylsulfonyl)phenyl)quinazoline
Figure BDA0001199231070000062
将对甲磺酰基苯甲醛(92mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:80%。
1H NMR(500MHZ,CDCl3)δ9.50(s,1H),8.83(d,J=8.0Hz,2H),8.09(t,J=10.3Hz,2H),7.95(t,J=9.2Hz,2H),7.68(t,J=7.3Hz,1H),3.12(s,3H);13C{1H}NMR(125MHZ,CDCl3)δ160.7,159.0,150.6,143.0,141.8,141.8,134.5,129.4,128.8,128.2,127.6,127.2,123.9,44.5。
实施例5:2-(4-三氟甲基苯基)喹唑啉
2-(4-(trifluoromethyl)phenyl)quinazoline
Figure BDA0001199231070000071
将对三氟甲基苯甲醛(87mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:72%。
1H NMR(500MHZ,CDCl3)δ9.49(s,1H),8.74(d,J=8.2Hz,2H),8.11(d,J=8.4Hz,1H),7.93(m,2H),7.78(d,J=8.2Hz,2H),7.65(t,J=7.5Hz,1H);13C{1H}NMR(125MHZ,CDCl3)δ160.5,159.5,150.6,141.3,134.3,132.2(q,JC-F=32.1Hz),128.8,128.7,127.8,127.1,125.5,125.4,125.3(q,JC-F=272.4Hz),123.8。
实施例6:2-(4-三氟甲氧基苯基)喹唑啉
2-(4-(trifluoromethoxy)phenyl)quinazoline
Figure BDA0001199231070000072
将对三氟甲氧基苯甲醛(95mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在空气中回流反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:70%。
1H NMR(500MHZ,CDCl3)δ9.46(s,1H),8.66(d,J=8.6Hz,2H),8.08(d,J=8.4Hz,1H),7.91(t,J=9.8Hz,2H),7.62(t,J=7.4Hz,1H),7.36(t,J=8.3Hz,2H);13C{1H}NMR(125MHZ,CDCl3)δ160.6,159.8,151.1,150.7,136.6,134.2,130.2,128.6,127.5,127.1,123.6,121.5(q,J=171.8Hz),120.7。
实施例7:2-(4-甲基苯基)喹唑啉
2-(4-methylphenyl)quinazoline
Figure BDA0001199231070000081
将对甲基苯甲醛(60mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:74%。
1H NMR(500MHZ,CDCl3)δ9.43(s,1H),8.50(d,J=7.9Hz,2H),8.06(d,J=8.4Hz,1H),7.87(m,2H),7.57(t,J=7.4Hz,1H),7.33(d,J=7.9Hz,2H),2.44(s,3H);13C{1H}NMR(125MHZ,CDCl3)δ161.1,160.4,150.8,140.8,135.3,134.0,129.4,128.5,127.1,127.0,123.5,21.5。
实施例8:2-(4-异丙基苯基)喹唑啉
2-(4-isopropylphenyl)quinazoline
Figure BDA0001199231070000082
将对异丙基苯甲醛(74mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:72%。
1H NMR(500MHZ,CDCl3)δ9.45(s,1H),8.52(d,J=8.0Hz,2H),8.06(d,J=8.4Hz,1H),7.87(m,2H),7.57(t,J=7.4Hz,1H),7.39(d,J=8.0Hz,2H),2.98(m,1H),1.31(d,J=5.5Hz,6H);13C{1H}NMR(125MHZ,CDCl3)δ161.2,160.4,151.7,150.8,135.7,134.0,128.62,128.58,127.1,127.0,126.7,123.4,34.1,23.9。
实施例9:2-(4-叔丁基苯基)喹唑啉
2-(4-(tert-butyl)phenyl)quinazoline
Figure BDA0001199231070000091
将对叔丁基苯甲醛(81mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃回流反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:75%。
1H NMR(500MHZ,CDCl3)δ9.44(s,1H),8.53(d,J=8.4Hz,2H),8.06(d,J=8.3Hz,1H),7.86(m,2H),7.55(t,J=9.5Hz,3H),1.39(s,9H);13C{1H}NMR(125MHZ,CDCl3)δ161.1,160.4,153.9,150.8,135.3,133.9,128.6,128.3,127.1,127.0,125.6,123.5,34.8,31.2。
实施例10:2-(4-叔丁基苯基)喹唑啉
2-(4-methoxyphenyl)quinazoline
Figure BDA0001199231070000092
将对甲氧基苯甲醛(68mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在空气中回流反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:74%。
1H NMR(500MHZ,CDCl3)δ9.39(s,1H),8.56(d,J=8.6Hz,2H),8.01(d,J=8.6Hz,1H),7.84(t,J=7.4Hz,2H),7.52(t,J=7.4Hz,3H),3.88(s,3H);13C{1H}NMR(125MHZ,CDCl3)δ161.8,160.7,160.3,150.7,133.9,130.6,130.1,128.3,127.0,126.7,123.2,113.9,55.3。
实施例11:2-苯基喹唑啉
2-phenylquinazoline
Figure BDA0001199231070000093
将苯甲醛(53mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:70%。
1H NMR(500MHZ,CDCl3)δ9.47(s,1H),8.62(dd,J=1.6 and 8.2Hz,2H),8.09(d,J=8.4Hz,1H),7.89-7.93(m,2H),7.61(t,J=7.5Hz,1H),7.50-7.56(m,3H);13C{1H}NMR(125MHZ,CDCl3)δ161.0,160.4,150.7,138.0,134.0,130.5,128.6,128.5,127.2,127.1,123.5。
实施例12:2-(2-萘基)喹唑啉
2-(naphthalen-2-yl)quinazoline
Figure BDA0001199231070000101
将对三氟甲氧基苯甲醛(78mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:75%。
1H NMR(500MHZ,CDCl3)δ9.52(s,1H),9.16(s,1H),8.73(dd,J=8.6Hz and 1.5Hz,1H),8.14(d,J=8.4Hz,1H),8.04(m,1H),7.99(d,J=8.6Hz,1H),7.89(m,3H),7.62(t,J=7.5Hz,1H),7.52(m,2H);13C{1H}NMR(125MHZ,CDCl3)δ161.0,160.5,150.8,135.4,134.7,134.1,133.4,129.3,128.9,128.7,128.3,127.7,127.3,127.2,127.1,126.2,125.4,123.6。
实施例13:2-(2-呋喃基)喹唑啉
2-(furan-2-yl)quinazoline
Figure BDA0001199231070000102
将糠醛(48mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:64%。
1H NMR(500MHZ,CDCl3)δ9.39(s,1H),8.01(d,J=8.8Hz,1H),7.89(t,J=7.1Hz,2H),7.70(s,1H),7.59(t,J=7.4Hz,1H),7.46(d,J=3.2Hz,1H),7.62(m,1H);13C{1H}NMR(125MHZ,CDCl3)δ160.7,154.1,152.5,150.4,145.3,134.5,128.4,127.3,123.4,114.1,112.3。
实施例14:2-噻吩基喹唑啉
2-(thiophen-2-yl)quinazoline
Figure BDA0001199231070000111
将糠醛(56mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率71%。
1H NMR(500MHZ,CDCl3)δ9.34(s,1H),8.15(d,J=2.5Hz,1H),7.99(d,J=8.6Hz,1H),7.85(d,J=6.7Hz,2H),7.54(t,J=7.4Hz,1H),7.51(d,J=4.5Hz,1H),7.18(t,J=3.7Hz,1H);13C{1H}NMR(125MHZ,CDCl3)δ160.5,157.8,150.6,143.8,134.3,129.9,129.2,128.3,128.1,127.2,126.9,123.3。
实施例15:2-戊基喹唑啉
2-pentylquinazoline
Figure BDA0001199231070000112
将己醛(50mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率70%。
1H NMR(500MHZ,CDCl31H NMR(500MHz,CDCl3)δ9.35(s,1H),7.98(d,J=8.4Hz,1H),7.88(t,J=7.8Hz,2H),7.58(t,J=7.4Hz,1H),3.12(t,J=7.8Hz,1H),1.92(q,J=7.6Hz,2H),1.40(m,5H),0.91(t,J=7.0Hz,3H);13C{1H}NMR(125MHz,CDCl3)δ167.9,160.3,150.3,133.9,127.8,127.0,126.8,123.0,39.9,31.7,28.7,22.5,14.0.。
实施例16:2-环己基喹唑啉
2-cyclohexylquinazoline
Figure BDA0001199231070000121
将环己基(56mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、邻氨基苄胺(62.4mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在空气中回流反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率65%。
1H NMR(500MHZ,CDCl3)δ9.35(s,1H),7.99(d,J=8.5Hz,1H),7.87(t,J=7.8Hz,2H),7.58(d,J=7.5Hz,1H),3.05(tt,J1=11.8Hz,J2=3.4Hz,1H),2.08(d,J=13.1Hz,2H),1.90(d,J=13.1Hz,2H),1.78(m,3H),1.48(m,2H),1.38(m,1H);13C{1H}NMR(125MHZ,CDCl3)δ170.9,160.4,150.4,133.8,128.0,127.0,126.8,123.2,47.9,31.9,26.3,26.0.。
实施例17:2-(4-氯)-5-氟喹唑啉
2-(4-chlorophenyl)-5-fluoroquinazoline
Figure BDA0001199231070000122
将对氯苯甲醛(70mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、2-氨基-5-氟苄胺(70mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:78%。
1H NMR(500MHZ,CDCl3)δ9.72(s,1H),8.57(d,J=8.6Hz,2H),7.85(m,2H),7.50(d,J=8.6Hz,2H),7.25(m,1H);13C{1H}NMR(125MHZ,CDCl3)δ160.7,159.2,157.2,154.9(d,JC-F=3.7Hz),151.4,137.3,136.1,134.2(d,JC-F=9.0Hz),130.0,128.8,124.5(d,JC-F=4.1Hz),114.5(d,JC-F=15.8Hz),111.2(d,JC-F=18.6Hz).。
实施例18:7-氯-2-(4-氯苯基)喹唑啉
7-chloro-2-(4-chlorophenyl)quinazoline
Figure BDA0001199231070000131
将对氯苯甲醛(70mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、2-氨基-4-氯苄胺(78mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:70%
1H NMR(500MHZ,CDCl3)δ9.72(s,1H),8.58(d,J=8.6Hz,2H),7.86(m,2H),7.50(d,J=8.6Hz,2H),7.24(d,J=8.0Hz,1H);13C{1H}NMR(125MHZ,CDCl3)δ160.8,160.1,151.2,140.5,137.2,136.0,129.9,128.8,128.6,128.3,127.7,121.9.。
实施例19:7-氯-2-(4-甲基苯基)喹唑啉
7-chloro-2-(4-chlorophenyl)quinazoline
Figure BDA0001199231070000132
将对氯苯甲醛(70mg,0.5mmol)、cat.7(8.3mg,0.01mmol,2mol%)、2-氨基-4-甲基苄胺(68mg,0.5mmol)和水(1ml)依次加入到25mL克氏管中。反应混合物在130℃反应12小时后,冷却到室温。旋转蒸发除掉溶剂,然后通过柱层析(展开剂:石油醚/乙酸乙酯)得到纯净的目标化合物,产率:50%。
1H NMR(500MHZ,CDCl3)δ9.39(s,1H),8.54(d,J=8.5Hz,2H),7.84(t,J=8.4Hz,2H),7.48(q,3H),2.61(s,3H);13C{1H}NMR(125MHZ,CDCl3)δ159.9,159.8,150.9,145.6,136.8,136.5,129.8,129.4,128.8,127.5,126.8,121.8,22.3。
实施例20:
除用cat.1(6.2mg,0.01mmol,2mol%)代替cat.7,其它反应原料,条件和产物同实施例1,产率:28%。
实施例21:
除用cat.2(4.5mg,0.01mmol,2mol%)代替cat.7,其它反应原料,条件和产物同实施例1,收率:57%。
实施例22:
除用cat.3(8.1mg,0.01mmol,2mol%)代替cat.7,其它反应原料,条件和产物同实施例1,收率:53%。
实施例23:
除用cat.4(8.6mg,0.01mmol,2mol%)代替cat.7,其它反应原料,条件和产物同实施例1,收率:36%。
实施例24:
除用cat.5(9.2mg,0.01mmol,2mol%)代替cat.7,其它反应原料,条件和产物同实施例1,收率:50%。
实施例25:
除用cat.6(8.3mg,0.01mmol,2mol%)代替cat.7,其它反应原料,条件和产物同实施例1,收率:83%。
实施例26:
除用cat.8(8.0mg,0.01mmol,2mol%)代替cat.7,其它反应原料,条件和产物同实施例1,收率:43%。
实施例27:
除用cat.7(4.2mg,0.01mmol,1mol%),其它反应原料,条件和产物同实施例1,收率:62%。
实施例28:
除反应温度在120℃,其它反应原料,条件和产物同实施例1,收率:68%。

Claims (5)

1.合成具有式Ⅰ结构的喹唑啉衍生物的方法,其特征在于,
Figure FDA0002962409460000011
包括将化合物醛II
Figure FDA0002962409460000012
与化合物邻氨基苄胺III在水中进行反应的步骤,
Figure FDA0002962409460000013
所述反应在水溶性金属络合物催化剂和无碱条件下发生,
其中,
R1选自甲基、卤代基;
R2代表一个取代基,选自C1-C7烷基、芳基、甲基苯基、甲氧基苯基、三氟甲基苯基、三氟甲氧基苯基、卤代苯基、呋喃基或噻吩基;
所述的水溶性金属络合物催化剂为如下结构:
Figure FDA0002962409460000014
2.如权利要求1所述的方法,其特征在于,水溶性金属络合物催化剂的用量相对于化合物醛的摩尔比为1-2mol%。
3.如权利要求1所述的方法,其特征在于,化合物邻氨基苄胺相对于化合物醛摩尔比为1:1。
4.如权利要求1所述的方法,其特征在于,所述反应在克氏 管进行。
5.如权利要求1所述的方法,其特征在于,反应时间为12小时以上。
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