(rac)-3-[(2-chloro-5-nitro-pyrimidin-4-yl)-cyclobutyl-amino]-2-methyl-propanoic acid methyl ester 在
铁粉 乙酸乙酯 、
水 、
ammonium hydroxide 、 Brine 、
magnesium sulfate 、 dichloromethane—hexanes 作用下,
以
溶剂黄146 为溶剂,
反应 3.0h,
以to give 1.07 g of (rac)-2-chloro-9-cyclobutyl-7-methyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one (VI-52) as white crystalline solid的产率得到(rac)-2-chloro-9-cyclobutyl-7-methyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one