Manufacture of olefinically unsaturated esters

Details Manufacture of olefinically unsaturated esters Manufacture of olefinically unsaturated esters

1976-07-14

1977-11-01

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2604109R, 560210, 560212, C09F 508, C09F 710, C11C 300

Patent

active

040565459

ABSTRACT:
A process for the manufacture of .alpha.,.beta.,.gamma.,.delta.-unsaturated esters containing a very high proportion of the 4(Z)-isomer, which are valuable perfume and flavor materials. The .alpha.,.beta.,.gamma.,.delta.-unsaturated esters are manufactured by a Wittig synthesis from phosphoranes and fumaraldehyde-acid esters under specific conditions.

REFERENCES:
patent: 3692851 (1972-09-01), Henrick et al.
Schlosser, M. et al., "Mechanisms and Stereochemistry of the Wittig Reaction", Annalen der Chemie, 708 (1967) pp. 1-35.

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