Thiophosphonate compounds having the formula ##STR1## in which R is alkyl, haloalkyl or aryl; X is chloro or SR.sub.2 ; R.sub.1 is alkyl or aryl; and when X is SR.sub.2 then R.sub.2 is a group identical to R.sub.1, or R.sub.1 and R.sub.2 taken together form an optionally alkyl-substituted polymethylene group, are prepared by reaction of a thiophosphonodichloride with a mercaptan in the presence of a catalytic amount of a quaternary ammonium or phosphonium salt, a tertiary amine or hydrohalide thereof or an alkali metal halide combined with a Crown ether, in the substantial absence of a base.
具有以下结构的噻
磷酸酯化合物##STR1##其中R为烷基、卤代烷基或芳基;X为
氯或SR.sub.2;R.sub.1为烷基或芳基;当X为SR.sub.2时,R.sub.2为与R.sub.1相同的基团,或者R.sub.1和R.sub.2一起形成一个可选择烷基取代的聚亚甲基基团,通过噻
磷酸二
氯化物与巯基化合物在四级
铵盐或
磷酸盐、三级胺或其氢卤化物或碱
金属卤化物与
冠醚的催化作用下反应制备,基本上不含碱。