以固体光气和邻、间、对氯代苯胺为原料,合成邻、间、对氯苯基单异氰酸酯.考察了溶剂、原料配比和反应时间对反应的影响.确定了以1,2-二氯乙烷为反应溶剂时,合成邻氯苯基单异氰酸酯、间氯苯基单异氰酸酯、对氯苯基单异氰酸酯的最佳反应时间和氯苯胺与固体光气的摩尔比分别为5 h,2.2:1;4.5 h,2:1和4.5 h,2:1;在上述反应条件下,邻、间、对氯苯基单异氰酸酯的收率分别达到84.7%、86.2%和89.0%,纯度分别为96.18%、97.83%和99.55%.
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