Process for the preparation of substituted phenylacetic acid der

Details Process for the preparation of substituted phenylacetic acid der Process for the preparation of substituted phenylacetic acid der

1995-03-30

1998-05-26

Cintins, Marianne M.

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

Organic compounds

Oxygen containing

568591, 562408, 562409, 562412, 562416, 562418, C07C 43303

Patent

active

057568588

ABSTRACT:
The invention relates to novel processes for the preparation of phenyl acetic acid derivatives of the formula (I) some of which are known ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 independently of each other each represent hydrogen, alkyl or alkoxy by ozonolysis of compounds of the formula (II) ##STR2## in which R.sup.4 represents hydrogen or methyl and oxidation of the reaction products obtained therefrom. The invention further relates to novel intermediates and a process for the preparation thereof.

REFERENCES:
patent: 4084061 (1978-04-01), Kanazawa et al.
patent: 5202500 (1993-04-01), Theis et al.
patent: 5262383 (1993-11-01), Fischer et al.
Chemical Abstract, vol. 53, abstract No. 21791a, (1959).
Derwet abstract to DE 35351, Apr. 2, 1987, Apr. 2, 1987.

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