Formation and reactivity of dianions derived from 2- and 3-thiophencarboxylic acids
作者:David W. Knght、Andrew P. Nott
DOI:10.1016/s0040-4039(00)71130-0
日期:1980.1
Dianions (3) and (6) can be generated in high yield from the corresponding thiophencarboxylic acids with lithium diisopropylamide and react with a number of representative electrophiles to give fair to good yields of 5-substituted-thiophen-2-carboxylic acids and 2-substituted thiophen-3-carboxylic acids respectively.
阴离子(3)和(6)可以由相应的噻吩羧酸与二异丙基氨基锂高产率生成,并与许多代表性的亲电试剂反应,以产生中等至良好收率的5-取代噻吩-2-羧酸和2-分别取代的噻吩-3-羧酸。