Process for preparing cis-olefins

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

1976-03-29

1977-11-08

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260680R, 260677R, C07C 100, C07C 124

Patent

active

040575934

ABSTRACT:
A process for preparing cis-olefins of the formula ##STR1## where R is alkyl or alkenyl and R.sup.1 is alkyl and alkenyl, both optionally substituted by hydroxy, carbalkoxy or acyloxy, which comprises an ylide solution of the compound R--CH.sub.2 --P.sup.+ (C.sub.6 H.sub.5).sub.3 Br.sup.- in hexaalkyl phosphoric acid triamide and adding an aldehyde of the formula R.sup.1 --CHO.

REFERENCES:
patent: 3067258 (1962-12-01), Grayson
patent: 3156739 (1964-11-01), Horner et al.
Noller; Chemistry of Organic Compounds, 3rd Ed., Philadelphia (1965), pp. 535-538.
Parker; Chemical Reviews, vol. 69, No. 1 (1969), pp. 1-4.

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