Study of insertion of olefins and/or carbon monoxide into phosphine-imine palladium methyl complexes

Citation
Kr. Reddy et al., Study of insertion of olefins and/or carbon monoxide into phosphine-imine palladium methyl complexes, ORGANOMETAL, 20(7), 2001, pp. 1292-1299
Citations number
74
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
ORGANOMETALLICS
ISSN journal
0276-7333 → ACNP
Volume
20
Issue
7
Year of publication
2001
Pages
1292 - 1299
Database
ISI
SICI code
0276-7333(20010402)20:7<1292:SOIOOA>2.0.ZU;2-P
Abstract
Palladium methyl complexes with a phosphine-imine (P similar toN) bidentate ligand, [Pd(P similar toN)-MeCl] (1), [Pd(P similar toN)Me(CH3CN)] (BF4) ( 2), and [Pd(P similar toN)Me(PPh3)] (BF4) (3), are treated with CO to resul t in the corresponding Pd-acyl complexes 4-6. NMR studies indicate the form ation of a sole isomer with the acyl group cis to the phosphine donor. The neutral complex 4 and the triphenylphosphine-substituted complex 6 cannot s erve for the insertion of ethylene. However, the acetonitrile complex 5 app ears 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.