Aminocarbonylation of phenylacetylene catalysed by palladium acetate in combination with (2-pyridyl)diphenylphosphine and methanesulfonic acid

被引:40
作者
Matteoli, U [1 ]
Scrivanti, A [1 ]
Beghetto, V [1 ]
机构
[1] Univ Venice, Dipartimento Chim, I-30123 Venice, Italy
关键词
alkynes; carbonylation; amides; palladium; aminocarbonylation;
D O I
10.1016/j.molcata.2003.12.012
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The aminocarbonylation of phenylacetylene has been studied in the presence of the catalytic system formed by palladium acetate in combination with (2-pyridyl)diphenylphosphine and methanesulfonic acid. The catalytic activity is strongly influenced by the nature of the amine: good reaction rates are achieved using amines of low basicity such as aniline. The reaction solvent influences both the activity and the selectivity of the catalyst: the highest reaction rates accompanied by complete regioselectivity towards the branched amide are obtained working in dichloromethane/N-methylpyrrolidinone mixtures. Also the acid to palladium molar ratio and the P(CO) affect to a lower extent the process: the highest catalyst activity is obtained operating at a methanesulfonic acid/Pd molar ratio of 30:1 and at P(CO) = 20 atm. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:183 / 186
页数:4
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