[(3-chloro-4-hydroxymethyl-phenylcarbamoyl)-methyl]-carbamic acid tert-butyl ester 在
二氧化锰 silica gel 、
ethyl acetate n-hexane 作用下,
以
氯仿 为溶剂,
以provided 22 mg of [(3-chloro-4-formyl-phenylcarbamoyl)-methyl]-carbamic acid tert-butyl ester as a foam (55% yield)的产率得到[(3-chloro-4-formyl-phenylcarbamoyl)-methyl]-carbamic acid tert-butyl ester