Synthesis and biological activities of 2 - fluoro - 6 - chlorobenzoylpyrimidinylthioureas 含三嗪基二取代氨基甲酰脲的合成及其生物活性
2.
Abstract : study on the synthesis of n - methyl carbamyl chloride underdifferent ratio of input materials and the yield of the termination products methyl isocyanate . the yield is raised from 81 . 89 % to 86 . 23 % 文摘:研究了在其它工艺条件不变的情况下，改变光气与甲胺的配比对合成n -甲氨基甲酰氯的影响。光气甲胺（摩尔比）由1 35 1降至1 25 1 ，最终产物甲基异氰酸酯收率由81 89升高至86 23 。
