2-amino-3-fluoro-N,3-dimethylbutanamide hydrochloride 、
8-(tert-butoxycarbonyl)-3-phenyl-6,7,8,9-tetrahydro-5H-imidazo[1,5-a][1,4]diazepine-1-carboxylic acid 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以86%的产率得到tert-butyl 1-(3-fluoro-3-methyl-1-(methylamino)-1-oxobutan-2-ylcarbamoyl)-3-phenyl-6,7-dihydro-5H-imidazo[1,5-a][1,4]diazepine-8(9H)-carboxylate