2-Diazo-5-(4-methyl-3-oxo-[1,2]diazetidin-1-yl)-3-oxo-5,5-diphenyl-pentanoic acid methyl ester 在
rhodium(II) acetate dimer 作用下,
以
苯 为溶剂,
以62%的产率得到1H-Pyrrolo[1,2-a]imidazole-7a(5H)-carboxylic acid,tetrahydro-3-methyl-2,7-dioxo-5,5-diphenyl-, methyl ester, cis-