Method for the preparation of substituted 1,4-dihydro-4-oxo-cinn

Details Method for the preparation of substituted 1,4-dihydro-4-oxo-cinn Method for the preparation of substituted 1,4-dihydro-4-oxo-cinn

1992-11-09

1994-04-19

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

562459, 562463, 562438, 560 23, 560 53, 558416, C07C 6976

Patent

active

053046722

ABSTRACT:
A method for the preparation of compounds of the formula ##STR1## wherein X represents a group of the formula OR.sub.1 or NR.sub.1 R.sub.2, wherein R.sub.1 and R.sub.2 independently represent H or an organic group that forms a stable covalent bond with the N or 0 of said X; Y is H or an organic group that forms a stable ester with the adjacent COO group; R is an alkyl or aryl group optionally substituted with one or more stable organic substituents; each R.sub.3 independently represents a stable organic group; and n is an integer from 0 to 3;
the method using new intermediates of the formula ##STR2## wherein R.sub.3 and Y have the foregoing meanings;

REFERENCES:
patent: 4741769 (1988-05-01), Lee
Profft, et al., Chemical Abstracts, vol. 65, No. 9, Oct. 24 1966, Columbus, Ohio; Abstract No. 13596H.

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