Novel PdCl2(RuCl3)/ZrO2-SO3 Catalysts for Synthesis of Carbamates by Oxidative Carbonylation of Amines

Abstract

Abstract: Novel combined PdCl₂(RuCl₃) with ZrO₂-SO₃ catalysts were developed for the synthesis of carbamates by oxidative carbonylation of aliphatic and aromatic amines. At 170 ℃ and 4.0 MPa, oxidative carbonylation of aromatic amines to the corresponding carbamates over this catalyst system could be proceeded with a high conversion and selectivity. Especially when β-naphthylamine was used as the substrate, 100% conversion and 95% selectivity were obtained in only 15 min. The catalytic performance of PdCl₂/ZrO₂-SO₃ was better than that of RuCl₃/ZrO₂-SO₃ for such oxidative carbonylation reaction. Possible role of ZrO₂-SO₃ as co catalyst was also conjectured.

Key words: Amines, Catalysis, Oxidative carbonylation, Carbamate

CLC Number:

O654.285

TrendMD:

SHI Feng, SIMA Tian-Long, DENG You-Quan . Novel PdCl₂(RuCl₃)/ZrO₂-SO₃ Catalysts for Synthesis of Carbamates by Oxidative Carbonylation of Amines[J]. Chem. J. Chinese Universities, 2000, 21(10): 1566.

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Novel PdCl₂(RuCl₃)/ZrO₂-SO₃ Catalysts for Synthesis of Carbamates by Oxidative Carbonylation of Amines

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