[EN] PROCESS FOR PREPARATION OF FLUORINATED TRIAZOLE COMPOUND<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN COMPOSÉ TRIAZOLE FLUORÉ
申请人:INDOCO REMEDIES LTD
公开号:WO2012032540A1
公开(公告)日:2012-03-15
The present invention discloses a process for the preparation of 1-[(2,6-difluorophenyl)methyl]-1H-1,2,3-triazole-4-carboxamide of Formula (I), comprising regioselective cycloaddition of 2,6-difluorobenzyl halide of Formula (II), wherein X is chloride, bromide or iodide; with a compound of Formula (IX); in which R is -COOR1, wherein R1 is hydrogen, C1-C4 linear or branched alkyl group, or-CN, or-CONH2 or -CH2OR2j wherein R2 is hydrogen or hydroxyl protecting group; in presence of an azide, Cu(I) species and a catalyst.
本发明揭示了一种制备1-[(2,6-二氟苯基)甲基]-1H-1,2,3-三唑-4-羧酰胺(式(I))的过程,包括式(II)中的2,6-二氟苯甲基卤化物的区域选择性环加成,其中X为氯、溴或碘;与式(IX)的化合物反应;其中R为-COOR1,其中R1为氢、C1-C4线性或支链烷基、或-CN、-CONH2或-CH2OR2j,其中R2为氢或羟基保护基;在叠氮化物、Cu(I)物种和催化剂存在下。