The Oxidative Carbonylation of Amines Catalyzed by Organic Gold(Ⅰ) Complexes

Abstract

Abstract: At 200 ℃ and 50 mPa, the oxidative carbonylation of amines catalyzed by organic gold complexes HAuCl₄, Au(PPh₃)Cl, Au(PPh₃)₂Cl, Au(PPh₃)NO₃ and [Au(PPh₃)]₂Safforded R(NHCO₂CH₃) n with a high conversion and selectivity. The best results were obtained when using the catalyst Au(PPh₃)Cl in the presence of PPh₃. The catalytic efficiency of catalytic Au(PPh₃)Cl was compared to Pd(PPh₃)₂Cl₂, e.g. the conversion was 97.2% and selectivity was 89% when using catalyst Au(PPh₃)Cl in the presence of PPh₃, while the conversion was 98.8% and selectivity was 86% when using catalyst Pd(PPh₃)₂Cl₂ in the presence of PPh₃. The experimental results suggested that Au complexes might be promising catalysts instead of Pd catalysts for the oxidative carbonylation of amines to carbamates.

Key words: Organic Au, Amines, Oxidative carbonylation, Carbamate

CLC Number:

O654.285

TrendMD:

SHI Feng, DENG You-Quan, SIMA Tian-Long, GONG Cheng-Ke . The Oxidative Carbonylation of Amines Catalyzed by Organic Gold(Ⅰ) Complexes[J]. Chem. J. Chinese Universities, 2001, 22(4): 645.

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The Oxidative Carbonylation of Amines Catalyzed by Organic Gold(Ⅰ) Complexes

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