Preparation of hydroxybenzaldehydes by hydrocarbonylation of hal

Details Preparation of hydroxybenzaldehydes by hydrocarbonylation of hal Preparation of hydroxybenzaldehydes by hydrocarbonylation of hal

1989-07-13

1990-06-12

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568 41, 568311, 560 51, 560 53, 549 70, 546314, 558415, C07C 4500

Patent

active

049334972

ABSTRACT:
Hydroxybenzaldehydes, e.g., vanillin, are prepared by hydrocarbonylating a corresponding halophenol, e.g., 4-bromo-2-methoxyphenol, in the presence of (a) a tertiary amine, (b) a catalyst based on a noble metal, and (c) a phosphine.

REFERENCES:
patent: 3960932 (1976-06-01), Heck
patent: 4536344 (1985-08-01), Fiedler et al.
patent: 4605749 (1988-08-01), Buchman et al.

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