2-(Allyl-benzyloxycarbonyl-amino)-5-methoxy-2-trifluoromethyl-pent-3-ynoic acid methyl ester 在
(η6-p-cymene)Ru(P(cyclohexyl)3)(CCC(phenyl)2)Cl triflate 作用下,
以
甲苯 为溶剂,
反应 72.5h,
以14%的产率得到3-(1-Methoxymethyl-vinyl)-2-trifluoromethyl-2,5-dihydro-pyrrole-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester