Sulfolenes; process for preparing them and their use

Details Sulfolenes; process for preparing them and their use Sulfolenes; process for preparing them and their use

C - Chemistry, Metallurgy

07

D

260/694, 260/328

C07D 333/72 (2006.01) C07C 1/32 (2006.01) C07C 13/19 (2006.01)

Patent

CA 2037529

BREVET D'INVENTION NOUVEAUX SULFOLENES, LEUR PROCEDE DE PREPARATION ET LEUR UTILISATION RHONE-POULENC NUTRITION ANIMALE ABREGE La présente invention concerne de nouveaux dérivés du sulfolène et plus particulièrement le 4,4-diméthyl 2,2-dioxo 1, 2, 4, 5, 6, 7-hexahydrobenzo[c] thiophène. Ces dérivés sont préparés par mise en contact de la myrcène sulfone avec un acide fort. Les dérivés de la présente invention sont utilisés comme intermédiaires de synthèse dans la préparation de la vitamine A.

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