双乙烯酮 、
(S)-tert-butyl 5-(3,5-bistrifluoromethylbenzylamino)-7-methyl-8-trifluoromethyl-2,3,4,5-tetrahydrobenzo[b]azepine-1-carboxylate 在
4-二甲氨基吡啶 氮气 、 hexanes ethyl acetate 作用下,
以
四氢呋喃 为溶剂,
反应 1.5h,
以to provide the title compound as an off-white solid (1.12 g, 97%)的产率得到(S)-5-[(3,5-bis-trifluoromethyl-benzyl)-(3-oxo-butyryl)-amino]-7-methyl-8-trifluoromethyl-2,3,4,5-tetrahydro-benzo[b]azepine-1-carboxylic acid tert-butyl ester