(2S,3S)-allyl-(2-tert-butoxycarbonylamino-3-methoxymethoxy-pent-4-enyl)-carbamic acid benzyl ester 在
Grubbs catalyst first generation 作用下,
以
二氯甲烷 为溶剂,
以78%的产率得到(3S,4S)-3-tert-butoxycarbonylamino-4-methoxymethoxy-2,3,4,7-tetrahydro-azepine-1-carboxylic acid benzyl ester