Dithiocarbonic acid S-[(3aR,6aR)-2-(4-bromo-phenyl)-6a-methyl-1,3-dioxo-1,2,3,3a,4,6a-hexahydro-cyclopenta[c]pyrrol-5-yl] ester O-methyl ester 在
nickel boride 作用下,
以55%的产率得到(3aR,6aS)-2-(4-Bromo-phenyl)-6a-methyl-4,6a-dihydro-3aH-cyclopenta[c]pyrrole-1,3-dione