(E)-2-(2-formyl-phenylsulfanyl)-but-2-enedioic acid dimethyl ester 在
1(S)-aminoindan-2(R)-ol-based p-anisyl-1,2,4-triazolium salt
potassium tert-butylate 作用下,
以
甲苯 为溶剂,
反应 24.0h,
生成
2-methoxycarbonylmethyl-3-oxo-2,3-dihydrobenzo[b]thiophene-2-carboxylic acid methyl ester 、 2-methoxycarbonylmethyl-3-oxo-2,3-dihydrobenzo[b]thiophene-2-carboxylic acid methyl ester