Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1988-02-08
1990-02-27
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
544335, 546174, 546326, 548217, 548224, 548343, 549287, 549345, 558416, 560 20, 560 64, 560 65, 560 96, 560190, C07C 6703, C07C12000, C07D23902, C07D21514, C07D23366, C07D31102
Patent
active
049048147
ABSTRACT:
Process for the preparation of tert-alkyl esters of the formula I ##STR1## in which m is 1 or 2, R is C.sub.4 -C.sub.12 tert-alkyl and X, if m=1, is unsubstituted or halogen-substituted alkyl, cycloalkyl, unsubstituted or substituted aryl or aralkyl, or an aromatic heterocyclic radical and, if m=2, is a direct bond, --CH.sub.2).sub.n, in which n can be an integer from 1 to 8, or 1,2-, 1,3- or 1,4-phenylene, by reaction of an ester of the formula II ##STR2## in which R.sub.1 is methyl or ethyl, with an alcohol ROH in the presence of a catalyst customary for transesterifications.
REFERENCES:
patent: 4730080 (1988-03-01), Drent
D. S. Wulfman et al, Synthesis, 1972, pp. 49.
Frei Urs
Kirchmayr Rudolf
Ciba-Geigy Corporation
Clarke Vera C.
Lone Werren B.
O'Brien Stephen V.
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