4-allyloxy-3-(allyl-phenyl-amino)-6-benzo[1,3]dioxol-5-yl-2-methyl-benzoic acid ethyl ester 在
Grubbs catalyst first generation 作用下,
以
二氯甲烷 为溶剂,
以90%的产率得到9-benzo[1,3]dioxol-5-yl-7-methyl-6-phenyl-5,6-dihydro-2H-benzo[b][1,4]oxazocine-8-carboxylic acid ethyl ester