One-step hydrogenation/esterification of benzyloxy phenoxy propa

Details One-step hydrogenation/esterification of benzyloxy phenoxy propa One-step hydrogenation/esterification of benzyloxy phenoxy propa

1985-12-05

1986-09-23

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

C07C 6976

Patent

active

046136770

ABSTRACT:
The invention is directed to the one-step hydrogenation/esterification of arylmethyleneoxyaryloxy alkanoic acids to produce (hydroxyphenoxy) carboxylates. The process comprises the hydrogenation and esterification of the aryloxy alkanoic acid in the presence of a palladium hydrogenation catalyst and an acidic esterification catalyst preferably utilizing the alcohol for the esterification as the hydrogenation solvent. The acid serves the dual role of hydrogenation promoter and esterification catalyst.

REFERENCES:
patent: 3717669 (1973-02-01), Grant et al.
patent: 3759950 (1973-09-01), Grant et al.
patent: 3795691 (1974-03-01), Douglas et al.

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