Method for producing 5-hydroxyalkyl-substituted 1-phenyl-1,2,4-triazole derivatives
申请人:BAYER PHARMA AKTIENGESELLSCHAFT
公开号:US10703742B2
公开(公告)日:2020-07-07
The present application relates to a novel and improved process for preparing 5-(hydroxyalkyl)-1-phenyl-1,2,4-triazole derivatives of the formula (I)
in which
R1A and R1B are independently selected from the group consisting of hydrogen, fluorine, chlorine, methyl, monofluoromethyl, difluoromethyl, trifluoromethyl, ethyl, methoxy, difluoromethoxy and trifluoromethoxy,
to novel precursors for preparation thereof, and to the preparation and use of the crystalline polymorph I of (5-(4-chlorophenyl)-2-(1-(3-chlorophenyl)-5-[(1S)-1-hydroxyethyl]-1H-1,2,4-triazol-3-yl}methyl)-4-[(2S)-3,3,3-trifluoro-2-hydroxypropyl]-2,4-dihydro-3H-1,2,4-triazol-3-one of the formula (I-A-1).
本申请涉及一种新型改进工艺,用于制备式 (I) 的 5-(羟基烷基)-1-苯基-1,2,4-三唑衍生物
其中
R1A 和 R1B 分别独立地选自氢、氟、氯、甲基、一氟甲基、二氟甲基、三氟甲基、乙基、甲氧基、二氟甲氧基和三氟甲氧基组成的组、
以及制备和使用(5-(4-氯苯基)-2-(1-(3-氯苯基)-5-[(1S)-1-羟乙基]-1H-1、2,4-triazol-3-yl}methyl)-4-[(2S)-3,3,3-trifluoro-2-hydroxypropyl]-2,4-dihydro-3H-1,2,4-triazol-3-one of the formula (I-A-1).