Rhodium-catalyzed hydroformylation of 4-vinylpyridine: 4-ethylpyridine formation via an unusual cleavage of the Rh?C bond by the enolic form of the oxo product.

Lazzaroni, Raffaello; Settambolo, Roberta; Caiazzo, Aldo; Bennett, Martin

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Rhodium-catalyzed hydroformylation of 4-vinylpyridine: 4-ethylpyridine formation via an unusual cleavage of the Rh?C bond by the enolic form of the oxo product.

Date

2002

Authors

Lazzaroni, Raffaello

Settambolo, Roberta

Caiazzo, Aldo

Bennett, Martin

Publisher

American Chemical Society

Abstract

The hydroformylation of 4-vinylpyridine (4VP) with rhodium catalyst Rh4(CO)12 modified with phosphine ligands (PMe2Ph) is not completely chemoselective to the branched aldehyde 2-(4-pyridyl)propanal (4α), the corresponding hydrogenation product 4-ethylpy