期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 694, 期 20, 页码 3222-3231出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2009.06.020
关键词
Heck reaction; Homogeneous catalysis; Palladacycle; N-heterocyclic carbene (NHC) palladium; complex; Vinylphosphonates
资金
- CEDRE
Pd-catalysed procedures for the direct Heck arylation of diethyl vinylphosphonate with various aryl or heteroaryl halides toward the synthesis of diethyl 2-(aryl) vinylphosphonates are reported. Several homogeneous catalytic systems (i.e. Herrmann palladacycle, Nolan (NHC)-palladium catalyst, Pd(OAc)(2)/PPh3) were used and compared within the study. High conversions and selectivities were achieved under optimised conditions (2 mol% [Pd], NMP, K2CO3, 140 degrees C) whatever the homogeneous catalyst used. (C) 2009 Elsevier B.V. All rights reserved.
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