2-[N-(toluene-4-sulfonyl)-N-(prop-2-enyl)amino]-5-phenylpent-4-ynoic acid methyl ester 、 alkaline earth salt of/the/ methylsulfuric acid 在
N-甲基吲哚酮 作用下,
生成 methyl (3S,7aS)-2-(4-methylphenyl)sulfonyl-6-oxo-5-phenyl-3,4,7,7a-tetrahydro-1H-cyclopenta[c]pyridine-3-carboxylate 、