(rac)-3-[(2-chloro-5-nitro-pyrimidin-4-yl)-(3-methyl-butyl)-amino]-2-methyl-propanoic acid ethyl ester 在
铁粉 乙酸乙酯 、
水 、
ammonium hydroxide 、 Brine 、
magnesium sulfate 、 silica gel 、
ethyl acetate dichloromethane 作用下,
以
溶剂黄146 为溶剂,
反应 2.0h,
以to give 0.61 g of (rac)-2-chloro-7-methyl-9-(3-methyl-butyl)-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one (VI-27) as white crystalline solid的产率得到(rac)-2-chloro-7-methyl-9-(3-methyl-butyl)-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one