3-O-ethyl 5-O-propan-2-yl 2-methyl-4-(3-nitrophenyl)-6-(2-trimethylsilylethynyl)-1,4-dihydropyridine-3,5-dicarboxylate 在
potassium carbonate 作用下,
以
甲醇 为溶剂,
反应 0.17h,
以87%的产率得到2-Ethynyl-6-methyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3,5-dicarboxylic acid 5-ethyl ester 3-isopropyl ester