Process for preparing cis-olefins

Details Process for preparing cis-olefins Process for preparing cis-olefins

C - Chemistry, Metallurgy

07

C

260/704, 260/485

C07C 1/26 (2006.01) C07C 1/34 (2006.01) C07C 11/02 (2006.01) C07C 67/00 (2006.01)

Patent

CA 1048532

ABSTRACT OF THE DISCLOSURE A process for preparing cis-olefins of the formula Image where R is alkyl or alkenyl and R1 is alkyl and alkenyl, both optionally substituted by hydroxy, carbalkoxy or acyloxy, which comprises dissolving an alkali metal or alkaline earth metal in a hexaalkylphosphoric acid triamide, adding to the solution obtained a phosphonium salt of the formula Image I and a) adding to the reaction mixture obtained an aldehyde of the formula Image II or b) introducing oxygen into the reaction mixture if symmetrical olefins (R = R1) are desired.

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