Process for preparing cis-olefins

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

1977-08-08

1978-10-03

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260682, 260680R, 260677R, 560238, 560261, 568857, 568878, C11C 302, C07C 2900, C07C 100

Patent

active

041184068

ABSTRACT:
A process for preparing cis-olefins of the formula ##STR1## where R ia 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..sym. (C.sub.6 H.sub.5).sub.3 Br.sup..crclbar. in hexaalkyl phosphoric acid traimide and adding an aldehyde of the formula R.sup.1 --CHO.

REFERENCES:
patent: 3634518 (1972-01-01), Buddrus
patent: 3706733 (1972-12-01), Henrick
patent: 3732282 (1973-05-01), Henrick et al.
patent: 3816484 (1974-06-01), Henrick et al.
Noller; Chemistry of Organic Compounds 3rd Ed. Philadelphia (1965) pp. 535-538.
Organic Reactions vol. 14, Chapter 3 (1965).

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