申请人:Eastman Kodak Company
公开号:US05864042A1
公开(公告)日:1999-01-26
The invention provides a process for preparing a 4-amino-5-mercapto-3-substituted-\x9b1,2,4!triazole comprising reacting a thiocarbohydrazide with a carboxylic acid in the presence of an organic solvent and a boron compound having the formula ##STR1## where R.sup.2, R.sup.3, and R.sup.4 are independently selected from the group consisting of hydrogen, hydroxy, amino, alkyl, aryl, alkoxy, and aryloxy groups. The process provides a safer low temperature process for preparing the desired compound.
该发明提供了一种制备4-氨基-5-巯基-3-取代-1,2,4-三唑的过程,包括在有机溶剂和具有以下结构的硼化合物的存在下,将硫代氨基甲酰肼与羧酸反应:其中R.sup.2、R.sup.3和R.sup.4分别独立地选自氢、羟基、氨基、烷基、芳基、烷氧基和芳氧基基团。该过程提供了一种更安全的低温制备所需化合物的方法。