(R)-methyl 3-((2-chloro-5-nitropyrimidin-4-yl)(3,3-difluorocyclopentyl)amino)-2,2-dimethylpropanoate 在
铁粉 溶剂黄146 、 silica gel 、
methanol-dichloromethane 、
甲醇 作用下,
以
溶剂黄146 为溶剂,
反应 2.0h,
以to afford the title compound as an off-white solid (1.67 g, 72% yield)的产率得到(R)-2-chloro-9-(3,3-difluorocyclopentyl)-7,7-dimethyl-8,9-dihydro-5H-pyrimido[4,5-b] [1,4]diazepin-6(7H)-one