[(S)-1-(Carbamoylmethylcarbamoyl)-2,2-dimethylpropyl]-carbamic acid tert-butyl ester 、
乙酸乙酯 、
1,4-二氧六环 、
盐酸1,4-二恶烷 在
氮气 、
(S)-2-Amino-N-carbamoylmethyl-3,3-dimethylbutyramide hydrochloride 作用下,
以
正己烷 为溶剂,
反应 4.0h,
以to afford desired product (S)-2-Amino-N-carbamoylmethyl-3,3-dimethylbutyramide hydrochloride as gummy semi solid (750 mg, yield 88%)的产率得到(S)-2-Amino-N-carbamoylmethyl-3,3-dimethylbutyramide hydrochloride