Production of aromatic aldehydes

Details Production of aromatic aldehydes Production of aromatic aldehydes

1990-07-02

1992-06-30

Lone, Werren B.

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

Organic compounds

Oxygen containing

568428, 556 13, 556 18, C07C 4542, C07C 4549

Patent

active

051264927

ABSTRACT:
Aromatic aldehydes are produced by catalytic formylation of aryl chlorides in the presence of a palladium chelating phosphine ligand complex of the formula (R.sub.2 R.sub.2 P(CH.sub.2).sub.n PR.sub.3 R.sub.4).sub.2 Pd, wherein n is 3 or 4 and R.sub.1 to r.sub.4 are H, alkyl, cycloalkyl or aryl, at least one of them being alkyl or cycloalkyl.

REFERENCES:
patent: 3642658 (1968-12-01), Allum et al.
patent: 4331818 (1982-05-01), Riley
patent: 4397787 (1983-08-01), Riley
patent: 4605749 (1986-08-01), Buchman et al.
Huser, M. et al "Chlorocarbon Activation: Catalytic Carbonylation of Dichloromethane and Chlorobenzene", Angew. Chem. Int. Ed. Engl. 28 (1989) No. 10, pp. 1386-1388.
Mutin, R. et al "Bi-metallic Activation in Homogeneous Catalysis: Palladium-catalyzed Carbonylation of Tricarbonyl(chloroarene)chromium Complexes to the Correspondidng Aldehydes, Esters, Amides, and .alpha.-Oxo Amides", J. Chem. Soc., Chem. Commun., 1988, pp. 896-898.

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