Acyloxy-2-butenes and their preparation

Details Acyloxy-2-butenes and their preparation Acyloxy-2-butenes and their preparation

1979-04-03

1986-10-21

Garner, Vivian

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

Organic compounds

Carboxylic acid esters

502184, 502185, 560 1, 560112, 560238, C07C 67055, C07C 6910, C07C 6918, C07C 6930

Patent

active

046187049

ABSTRACT:
Acyloxy-2-butenes of the formula ##STR1## where R.sup.1, R.sup.3 and R.sup.4 are each hydrogen or alkyl of 1 to 5 carbon atoms, R.sup.2 is alkyl of 1 to 5 carbon atoms, R.sup.5 is hydrogen, alkyl of 1 to 5 carbon atoms or R.sup.6 --CO--O, and R.sup.6 and R.sup.7 are each hydrogen, alkyl of 1 to 5 carbon atoms, phenyl or cyclohexyl, the preparation of these acyloxy-2-butenes by reaction of 1-acyloxy-1,3-butadienes of the formula ##STR2## with carboxylic acids of the formula R.sup.7 --COOH and oxygen at 50.degree.-180.degree. C. in the presence of catalysts containing palladium or platinum, and the use of the compounds of the formula I, where R.sup.1, R.sup.3, R.sup.4 and R.sup.5 are hydrogen, R.sup.2 and R.sup.6 are methyl and R.sup.7 is methyl or ethyl, for the preparation of 4-acyloxytiglic aldehydes.

REFERENCES:
patent: 3872163 (1975-03-01), Shimiza et al.
Chem. Abstracts, 66:104490P (1967).
Houben-Weyl, Methoden der Organ. Chemie, vol. V/1c, pp. 184-192.
J. Amer. Chem. Soc., 83, 1961, pp. 4916-4919.
Houben-Weyl, Methoden der Organ. Chemie, vol 7/1, p. 444.

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