(E)-2-Cyano-5-phenyl-pent-2-enoic acid methyl ester 、
di-tert-butyl (E)-azodicarboxylate 在
(8a,9R,8′′′a,9′′′R)-9,9′-[(2,5-diphenylpyrimidine-4,6-diyl)bis(oxy)]bis(6′-methoxy-10,11-dihydrocinchonan) 作用下,
以
二氯甲烷 为溶剂,
以89%的产率得到(S)-(E)-4-[N,N'-bis(tert-butoxycarbonyl)hydrazino]-2-cyano-5-phenylpent-2-enoic acid methyl ester