(S)-tert-butyl 4-((R,Z)-4-acetoxy-1-(benzyloxy)but-2-en-1-yl)-2,2-dimethyloxazolidine-3-carboxylate 在
iron(III) chloride adsorbed on silica gel 作用下,
以
氯仿 为溶剂,
反应 12.0h,
以92%的产率得到(4R,5S,Z)-4-(benzyloxy)-5-((tert-butoxycarbonyl)amino)-6-hydroxyhex-2-en-1-yl acetate