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化学学报
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化学学报 ›› 2001, Vol. 59 ›› Issue (5): 799-802. 上一篇    

研究论文

温和条件下脂肪胺间接电催化羰化合成二烷基脲

杨宏洲;邓友全   

  1. 中国科学院兰州化学物理研究所.兰州(730000);中国科学院羰基合成与选择氧 化国家重点实验室
  • 发布日期:2001-05-15

Synthesis of dialkylureas by indirect electrocatalytical carbonylation of aliphatic amines under mild conditions

Yang Hongzhou;Deng Youquan   

  1. Lanzhou Inst Chem Phys, CAS.Lanzhou(730000)
  • Published:2001-05-15

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在电化学可再生的钯配合物及酮共催化剂的存在下，利用间接电催化羰化法从脂肪族胺合成了相应的二烷基脲，实验结果表明，在50℃和常压下，一取代的脂肪族伯胺主要生成二烷基脲，并且具有很高的转化率和选择性，而脂肪族二胺在反应条件下则生成少量相应的二异氰酸酯，同时，溶剂对选择性有很大的影响。

关键词: 脂肪族胺, 电催化, 脲, 异氰酸酯P, 钯

Anovel synthesis of several dialkylureas by indirect electrocatalytical carbonylation of corresponding aliphatic amines was carried out at 50℃and atmospheric pressure with an electrochemically regenerable palladium(Ⅱ) as catalyst and copper(Ⅱ ) acetate as cocatalyst with excellent conversion and selectivity. The results show that the main products are dialkylureas for the mono- aliphatic amines and isocyanates for the diamines. Solvent has a strong impact on the selectivity.

Key words: ALIPHATIC AMINES, ELECTRO-CATALYSIS, UREA, ISOCYANATE P, PALLADIUM

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