2-(methylsulfanyl-phenylamino-methylene)malonic acid diethyl ester 在
正己烷 作用下,
以
邻二氯苯 为溶剂,
反应 1.5h,
以to yield 4-hydroxy-2-methylsulfanyl-quinoline-3-carboxylic acid ethyl ester (8 g, 35%)的产率得到4-hydroxy-2-methylsulfanylquinoline-3-carboxylic acid ethyl ester