Unsaturated derivatives, their preparation, and their use

Details Unsaturated derivatives, their preparation, and their use Unsaturated derivatives, their preparation, and their use

C - Chemistry, Metallurgy

07

C

260/520, 260/485

C07C 59/76 (2006.01) C07C 45/67 (2006.01) C07C 59/185 (2006.01) C07C 67/343 (2006.01)

Patent

CA 1250312

PRECIS DE LA DIVULGATION: L'invention concerne un procédé pour la prépara- tion de nouveaux dérivés de formule générale (I): Image (I) dans laquelle: Q représente un radical alcoyloxycarbonyle ou carboxy, R1 représente un radical aliphatique saturé ou insaturé, R2 représente un atome d'hydrogène ou un radical alcoyle, R3 représente un atome d'hydrogène ou un radical aliphatique et R4 représente un atome d'hydrogène ou un radical aliphatique saturé ou insaturé éventuellement substitué; et les dérivés ainsi obtenus. Ces dérivés de formule générale (I) sont particulièrement utiles comme intermédiaires dans la syn- thèse de la vitamine E.

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