Direct Synthesis of Isocyanates by Electrocatalytical Carbonylation of Amines at Atmospheric Pressure

Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (11): 1913.

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Direct Synthesis of Isocyanates by Electrocatalytical Carbonylation of Amines at Atmospheric Pressure

YANG Hong-Zhou, DENG You-Quan, SHI Feng, SIMA Tian-Long

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China

Received:2000-09-25 Online:2001-11-24 Published:2001-11-24

Abstract

Abstract: Anovel synthesis of several isocyanates by direct electrocatalytical carbonylation of corresponding amines can proceed through an electrochemically regenerable palladium(Ⅱ) catalyst in combination with copper acetate as cocatalyst with an excellent conversion and selectivity under mild conditions. The results show that Pd(PPh-3)₂Cl₂ was the best catalyst. For aromatic amines, the main products were the corresponding isocyanates. And for aliphatic amines, various products were detected.

Key words: Electrocatalysis, Oxidative carbonylation, Amines, Isocyanates

CLC Number:

TQ 151.4

TrendMD:

YANG Hong-Zhou, DENG You-Quan, SHI Feng, SIMA Tian-Long . Direct Synthesis of Isocyanates by Electrocatalytical Carbonylation of Amines at Atmospheric Pressure[J]. Chem. J. Chinese Universities, 2001, 22(11): 1913.

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Direct Synthesis of Isocyanates by Electrocatalytical Carbonylation of Amines at Atmospheric Pressure

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