Methyl 1-ethyl-5-(4-chlorobenzoyl)oxindole-3-carboxylate 、 Methyl 1-ethyl-5-(4-fluorobenzoyl)oxindole-3-carboxylate 、 Methyl 1-ethyl-5-(4-methylbenzoyl)oxindole-3carboxylate 生成
5-benzoyl-1-ethyl-2-oxo-2,3-dihydro-1H-indole-3-carboxylic acid ethyl ester