(R)-2-amino-7-(2-bromo-4-fluoro-phenyl)-4-methyl-7,8-dihydro-6H-pyrido[4,3-d]pyrimidine-5-thione 、
(2S,4R)-1-tert-butyl 2-methyl 4-(aminooxy)pyrrolidine-1,2-dicarboxylate 在
Acetic acid, mercury(2+) salt (2:1) 作用下,
以
甲苯 为溶剂,
反应 2.0h,
以to afford (2S,4R)-1-tert-butyl 2-methyl 4-((Z)—((R)-2-amino-7-(2-bromo-4-fluorophenyl)-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidin-5(6H)-ylidene)aminooxy)pyrrolidine-1,2-dicarboxylate (172 mg, 570%) as off white solid的产率得到(2S,4R)-1-tert-butyl 2-methyl 4-((Z)-((R)-2-amino-7-(2-bromo-4-fluorophenyl)-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidin-5(6H)-ylidene)aminooxy)pyrrolidine-1,2-dicarboxylate