CN106916103B - 一种2-苯基喹啉类化合物的制备方法 - Google Patents

一种2-苯基喹啉类化合物的制备方法 Download PDF

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CN106916103B
CN106916103B CN201710256236.5A CN201710256236A CN106916103B CN 106916103 B CN106916103 B CN 106916103B CN 201710256236 A CN201710256236 A CN 201710256236A CN 106916103 B CN106916103 B CN 106916103B
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phenylquinoline
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CN106916103A (zh
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吴彦超
赵岩岩
李惠静
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Weihai marine biological medicine industry technology Research Institute Co., Ltd
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    • C07ORGANIC CHEMISTRY
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    • C07D215/00Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/04Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to the ring carbon atoms
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    • C07D215/00Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/16Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
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Abstract

本发明涉及一种2‑苯基喹啉类化合物的制备方法。所制备的2‑苯基喹啉类化合物结构式如图所示,其中R1、R2、R3、R4、R5、R6、R7、R8、R9为氢原子、烷基、芳基、烷氧基、卤素、三氟甲基。制备方法:邻硝基甲苯类化合物、苯乙酮类化合物、碱以及溶剂在室温至150 oC下搅拌1‑24小时。反应结束后淬灭,有机溶剂萃取、浓缩、提纯,得到2‑苯基喹啉类化合物,产率在47~81%。本发明具有原料易得、反应条件温和、反应时间短、操作简单等特点。

Description

一种2-苯基喹啉类化合物的制备方法
技术领域
本发明涉及一种2-苯基喹啉类化合物的制备方法。
背景技术
喹啉类化合物是一种重要的药物中间体,具有杀菌消炎,抗肿瘤等多种生物活性。喹啉类化合物的合成起初采用邻氨基苯甲醛为起始原料,但由于原料自身会发生缩聚反应影响产率,后采用邻氨基苄醇或者邻硝基苯甲醛为起始原料,改进了实验方法(EuropeanJournal of Organic Chemistry, 2008, 2008(9):1625-1631;Advanced Synthesis &Catalysis, 2015, 46(26):583-588.)。采用邻硝基苯甲醛与苯乙酮做原料时反应温度较高,而且由于反应本身是放热反应,加入强碱时具有一定的危险性(Synthesis, 2010 ,2010(10):1678-1686.)。另一种实验方法采用邻硝基苯甲醛与苯乙炔在金属催化剂作用下合成喹啉类化合物(Chemical Communications, 2013 , 49(6):570-572.)。而本发明以邻硝基甲苯类化合物和酮类化合物为原料,在温和条件下即可制备喹啉类化合物。故相比较而言,本发明具有原料易得、反应条件温和、反应时间短、操作简单等特点。
发明内容
本发明目的在于提供一种2-苯基喹啉类化合物的制备方法。
为实现上述目的,本发明提供的2-苯基喹啉类化合物结构如图1所示,其中R1、R2、R3、R4、R5、R6、R7、R8、R9为氢原子、烷基、芳基、烷氧基、卤素、三氟甲基。本发明提供的制备方法,主要步骤是:邻硝基甲苯类化合物,苯乙酮类化合物,碱和溶剂在室温至150o C下充分搅拌反应1-24小时。反应结束后淬灭,有机溶剂萃取,干燥,过滤,浓缩,柱层析提纯,得到2-苯基喹啉类化合物,产率在47~81%。所得化合物经核磁共振谱图(1H-NMR 和13C-NMR)确认,结构无误。
本发明采用取代或未取代邻硝基甲苯和苯乙酮类化合物可以直接从市场上购买。
本发明采用的碱为氢氧化钾,氢氧化钠,叔丁醇钾,氢化钠,叔丁醇钠,碳酸铯,氢氧化锂。
本发明采用的溶剂为二甲基亚砜、叔丁醇、N,N-二甲基甲酰胺、六甲基磷酰三胺。
本发明的柱层析所用的洗脱剂是石油醚或烷烃等。
附图说明
图1为2-苯基喹啉类化合物的结构图;
图2为反应的具体过程图。
具体实施方式
其反应过程如图2所示,图2反应式中:其中R1、R2、R3、R4、R5、R6、R7、R8、R9为氢原子、烷基、芳基、烷氧基、卤素、三氟甲基。
具体制备方法举例一:0.2毫摩尔邻硝基甲苯,0.2毫摩尔苯乙酮,0.4毫摩尔氢氧化钾(碱)和1.0毫升二甲基亚砜混合在一起,在室温下充分搅拌反应4小时。反应结束后用饱和氯化铵水溶液淬灭,有机溶剂萃取,干燥,过滤,浓缩,柱层析提纯,得到2-苯基喹啉,收率为73%。核磁共振氢谱 1H NMR (400 MHz, CDCl3) δ 8.24 (d, 1H, J = 8.6 Hz), 8.17(t, 3H, J = 7.4 Hz), 7.89 (d, 1H, J = 8.6 Hz), 7.84 (d, 1H, J = 8.0 Hz), 7.74(t , 1H, J = 7.7 Hz), 7.54 (t, 3H, J = 7.3 Hz), 7.47 (m, 1H); 核磁共振碳谱 13CNMR(100 MHz, CDCl3) δ 157.4, 148.3, 139.5, 136.7, 129.8, 129.7, 129.5, 128.7,127.7, 127.3, 127.1, 126.2 , 119.1。
具体制备方法举例二:0.2毫摩尔3-氯-6-硝基甲苯,0.2毫摩尔苯乙酮,0.4毫摩尔氢氧化钾(碱)和1.0毫升二甲基亚砜混合在一起,在室温下充分搅拌反应4小时。反应结束后用饱和氯化铵水溶液淬灭,有机溶剂萃取,干燥,过滤,浓缩,柱层析提纯,得到6-氯-2-苯基喹啉,收率为52%。核磁共振氢谱 1H NMR (400 MHz, CDCl3) δ 8.18–8.14 (m, 4H),7.91 (d, 1H, J = 8.6 Hz), 7.82 (s, 1H), 7.68 (d, 1H, J = 8.6 Hz), 7.55–7.46(m, 3H); 13C NMR (100 MHz, CDCl3) δ 157.6, 146.4, 138.8, 136.2, 132.2, 131.2,130.8, 129.8, 128.8, 127.6, 127.7, 126.2, 119.9。

Claims (5)

1.一种2-苯基喹啉类化合物的绿色合成方法,主要步骤是:
a)将邻硝基甲苯类化合物
Figure FDA0002416048330000011
苯乙酮类化合物
Figure FDA0002416048330000012
和碱以及有机溶剂加入到反应管中,室温至150℃下反应1–24小时;其中R1、R2、R3、R4、R5、R6、R7、R8、R9为氢原子、卤素;R1、R2、R3、R4、R5、R6、R7、R8、R9为同一基团或选自不同基团;
b)反应结束后淬灭,有机溶剂萃取,干燥,过滤,浓缩;
c)柱层析提纯,洗脱剂为石油醚或烷烃等,得到2-苯基喹啉类化合物
Figure FDA0002416048330000013
2.根据权利要求1所述的制备方法,其特征在于:所述的碱为氢氧化钾、氢氧化钠、叔丁醇钾、氢化钠、叔丁醇钠、碳酸铯、氢氧化锂。
3.根据权利要求2所述的制备方法,其特征在于:氢氧化钾为碱。
4.根据权利要求1所述的制备方法,其特征在于:所述的反应溶剂为二甲基亚砜、叔丁醇、N,N-二甲基甲酰胺、六甲基磷酰三胺。
5.根据权利要求1所述的制备方法,其特征在于:所述的苯乙酮类化合物和邻硝基甲苯类化合物的摩尔比为1:10–10:1,苯乙酮类化合物与碱的摩尔比为0.1:1–1:0.1。
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Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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An-Hu Li et al..One-Pot Friedländer Quinoline Synthesis: Scope and Limitations.《SYNTHESIS》.2010,第10卷1678-1686. *

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