Synthesis of meta-substituted aniline derivatives by nucleophilic substitution

被引:32
作者
Belfield, AJ [1 ]
Brown, GR [1 ]
Foubister, AJ [1 ]
Ratcliffe, PD [1 ]
机构
[1] AstraZeneca, Macclesfield SK10 4TG, Cheshire, England
关键词
amination; aryl halides; substituent effects;
D O I
10.1016/S0040-4020(99)00818-2
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Substitution by amines of fluorobenzenes containing a meta-substituted electron withdrawing group (EWG), in DMSO at 100 degrees C over 60 h gave meta-substituted aniline derivatives in isolated yields of up to 98%. The scope of the reaction is explored in terms of reaction conditions and substrates. It is postulated that facile meta-substitutions are facilitated through field stabilisation of the intermediate anion by EWG substituents. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:13285 / 13300
页数:16
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