偶氮二甲酸二乙酯 、
(S)-2-(2,2-dimethylpropoxycarbonylamino)-3-(4-hydroxy-3-nitrophenyl)propionic acid ethyl ester 、 Dibenzyl 2-hydroxypentanedicarboxylate 以
四氢呋喃 为溶剂,
反应 16.0h,
以conventional work-up gives 13, which的产率得到Dibenzyl (r)-2-{4-[(s)-2-(2,2-dimethylpropoxycarbonylamino)-2-ethoxycarbonylethyl]-2-nitrophenoxy}pentanedicarboxylate