Preparation of 4-substituted but-3-ene-1-carboxylic acids and th

Details Preparation of 4-substituted but-3-ene-1-carboxylic acids and th Preparation of 4-substituted but-3-ene-1-carboxylic acids and th

1984-12-11

1986-04-29

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260413, 560 8, 560 55, 560101, 560104, 560114, 560207, 562406, 562465, 562491, 562495, 562517, 549323, 549427, C07C 5114, C07C 6736

Patent

active

045855943

ABSTRACT:
4-Substituted but-3-ene-1-carboxylic acids and their esters R.sup.1 R.sup.2 C.dbd.CH--CH.sub.2 --CO--O--R.sup.3 (I, where R.sup.1 is an organic radical, R.sup.2 is H or R.sup.1, or R.sup.1 and R.sup.2 together form a 5-membered to 20-membered ring, and R.sup.3 is H or lower alkyl) are prepared by carbonylation of R.sup.1 R.sup.2 C(OH)--CH.dbd.CH.sub.2 (II) in the presence of an alcohol R.sup.3' --OH (III, where R.sup.3' is lower alkyl) or, for the preparation of the acids I alone, in the absence of an alcohol III, at from 50.degree. to 150.degree. C. and under from 200 to 700 bar, using a complex of a palladium halide and a tertiary organic phosphine.

REFERENCES:
Tsuji et al., in J. Am. Chem. Soc. 86 (1964), pp. 4350-4353.
Bittler et al., Angew. Chemie, 80 (1968), pp. 352-359.

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