Process for preparing chlorinated ethylenic derivatives

Details Process for preparing chlorinated ethylenic derivatives Process for preparing chlorinated ethylenic derivatives

1984-11-16

1987-01-06

Trousof, Natalie

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549408, 549410, 560219, 560262, 568393, 568459, 568596, 568686, 568849, 570153, 570234, C07D33348

Patent

active

046347780

ABSTRACT:
Process for preparing chlorinated ethylenic derivatives of the formula ##STR1## in which R.sub.1 represents acetyl, formyl optionally in the form of an acetal, hydroxy optionally as an ether or ester, alkyloxycarbonyl, alkyl of 1 to 12 carbon atoms substituted by one or more acetyl, formyl optionally in the form of an acetal, hydroxy optionally in the form of an ether or ester, or alkyloxycarbonyl, alkenyl of 2 to 12 carbon atoms containing one or more double bonds optionally substituted by one or more of acetyl, formyl optionally in the form of an acetal, hydroxy optionally in the form of an ether or ester, or alkyloxycarbonyl, or R.sub.1 represents 3-sulpholenyl or a radical of formula ##STR2## in which R.sub.2 denotes a hydrogen or acetyl, by reacting chlorine in a nonpolar aprotic solvent with a compound of general formula ##STR3## in which R.sub.1 is defined as above. The products of formula I, some of which are new, are useful as intermediates in the synthesis of terpene products such as vitamin E.

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patent: 3110740 (1963-11-01), Peer et al.
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patent: 4503239 (1985-03-01), Desmurs
Mathieu et al., L'amenagement Fonctionnel en Synthese Organique, Hermann (1977), pp. 241-244, 281-282, 237-239.

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