Study of Insertion of Olefins and/or Carbon Monoxide into Phosphine?Imine Palladium Methyl Complexes
Resource
Organometallics 20 (7): 1292-1299
Journal
Organometallics
Journal Volume
20
Journal Issue
7
Pages
1292-1299
Date Issued
2001
Date
2001
Author(s)
Abstract
Palladium methyl complexes with a phosphine-imine (P∼N) bidentate ligand, [Pd(P∼N)-MeCl] (1), [Pd(P∼N)Me(CH3CN)](BF4) (2), and [Pd(P∼N)Me(PPh3)](BF4) (3), are treated with CO to result in the corresponding Pd-acyl complexes 4-6. NMR studies indicate the formation of a sole isomer with the acyl group cis to the phosphine donor. The neutral complex 4 and the triphenylphosphine-substituted complex 6 cannot serve for the insertion of ethylene. However, the acetonitrile complex 5 appears to be active in the insertion reaction with various alkenes as well as ethylene/CO (E-CO) co-oligomerization, resulting in the products 7-14 and 16, which have been isolated and characterized by spectroscopic methods. X-ray structures of 1, 2, 3, 4, 7, 10, 11, and 13 are revealed.
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Type
journal article
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