Thiocarbamates are prepared by a process comprising reacting an aqueous solution of a thiocarbamate salt with an organic halide in the presence of a catalytic amount of a quaternary ammonium salt having the formula
in which R4 and R5 are independently selected from the group consisting of C1-C25 alkyl and C2-C25 alkenyl, R6 and R7 are independently selected from the group consisting of C6-C25 alkyl and C6-C25 alkenyl, and Y- is an anion selected from the group consisting of chloride and bromide; and separating the thiocarbamate from the aqueous solution.
硫代
氨基甲酸酯的制备方法包括:在催化量的季
铵盐存在下,使
硫代
氨基甲酸酯盐的
水溶液与有机卤化物反应,该季
铵盐的式为 R4 和 R5 独立地选自 C1-C25 烷基和 C2-C25 烯基,R6 和 R7 独立地选自 C6-C25 烷基和 C6-C25 烯基,Y- 是选自
氯化物和
溴化物的阴离子;然后将
硫代
氨基甲酸酯从
水溶液中分离出来。