Process for the preparation of benzaldehydes

Details Process for the preparation of benzaldehydes Process for the preparation of benzaldehydes

1990-10-25

1992-01-21

Lone, Werren B.

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

Organic compounds

Oxygen containing

568 27, 568 28, 568 30, 568 32, 568 33, 568 41, 568423, 568436, 568437, C07C 4532, C07C 4536

Patent

active

050829769

ABSTRACT:
Benzaldehydes of the formula ##STR1## can be obtained by reaction of substituted .beta.-amino-styrenes of the formula ##STR2## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.8, R.sup.9, R.sup.10, m, n and o have the scope of meaning indicated in the description, with oxygen in the presence of a Cu compound in the solution of an aprotic polar solvent at 0.degree.-120.degree. C.

REFERENCES:
patent: 3641157 (1972-02-01), Riegel
patent: 3661942 (1972-09-01), Rheenen et al.
patent: 3931225 (1976-06-01), Fryer et al.
patent: 3989674 (1976-11-01), Sinfelt et al.
Patent Abstracts of Japan unexamined applications, C Field, vol. 9, No. 138, pp. 123.

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