methyl 2-{N-but-2-yn-1-yl[(4-methylphenyl)sulfonyl]amino}but-3-enoate 、
1,3-丁二烯 在
Rh(IMes)(cod)Cl
silver trifluoromethanesulfonate 作用下,
以
甲苯 为溶剂,
以71%的产率得到methyl (3aE,6Z)-4-methyl-2-[(4-methylphenyl)sulfonyl]-2,3,5,8,9,9a-hexahydro-1H-cycloocta[c]pyrrole-1-carboxylate