申请人:Mimura Mitsuo
公开号:US08871942B2
公开(公告)日:2014-10-28
An object is to provide a process for producing the compound of formula 1 in higher yield by the ring-opening addition reaction of epoxytriazole with amine under mild conditions without using a large excess of 4-methylenepiperidine. The process for producing (2R,3R)-2-(2,4-difluorophenyl)-3-(4-methylenepiperidin-1-yl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol or an acid addition salt thereof comprises reacting (2R,3S)-2-(2,4-difluorophenyl)-3-methyl-2-[(1H-1,2,4-triazol-1-yl)methyl]oxirane with an acid addition salt of 4-methylenepiperidine in a reaction solvent in the presence of a hydroxide of an alkali metal or an alkaline earth metal selected from the group consisting of lithium, sodium, calcium, and strontium, or a hydrate thereof.
本发明旨在提供一种在温和条件下,通过环氧三唑与胺的开环加成反应,生产式1化合物的过程,而不使用大量过量的4-甲基哌啶,以提高产量。生产(2R,3R)-2-(2,4-二氟苯基)-3-(4-甲基亚胺基哌啶-1-基)-1-(1H-1,2,4-三唑-1-基)丁-2-醇或其酸加成盐的过程包括在反应溶剂中,在碱金属或碱土金属的氢氧化物或水合物的存在下,将(2R,3S)-2-(2,4-二氟苯基)-3-甲基-2-[(1H-1,2,4-三唑-1-基)甲基]环氧烷与4-甲基哌啶的酸加成盐反应。