Preparation of polyenecarbonyl compounds having a high content o

Details Preparation of polyenecarbonyl compounds having a high content o Preparation of polyenecarbonyl compounds having a high content o

1995-07-06

1998-06-30

Geist, Gary

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

Organic compounds

Fatty compounds having an acid moiety which contains the...

554132, 554139, 568309, 568320, 568338, 568344, 549357, 549430, 423405, C07C 5116

Patent

active

057736359

ABSTRACT:
A process for preparing polyenecarbonyl compounds having a high all-E content and their acetals or ketals by aldol condensation or Horner-Emmons reaction comprises carrying out the reaction, for the purposes of the preferred formation of a double bond of E configuration and in order to maintain the E configuration of the double bonds in the stating compounds as completely as possible, in the presence of oxygen or an oxygen-inert gas mixture or nitric oxide or a nitric oxide-inert gas mixture and/or in the presence of specific stable radicals and/or in the presence of quinones or quinone derivatives.

REFERENCES:
Chemical Abstracts, 119: 23870, 1993, Compounds Attached.
Handbuch zur Anwendung der . . . 853-858.
Xenobiotica, 1979, vol. 9, No. 11, 649-657, J. U. Skaare and E. Solheim.
Ortho-Chinone, C. Grundmann, 3-6.
J. Org. Chem. 30 (1965) p. 2481.
Pure & Appl. Chem. vol. 63, No. 1, 45-58, 1991, Paust.
Houben-Weyl, Methoden Der Organischem, 1972, 127-129 and 142-144.

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