Intermediates for the preparation of vitamin a and e and of...

Details Intermediates for the preparation of vitamin a and e and of... Intermediates for the preparation of vitamin a and e and of...

C - Chemistry, Metallurgy

07

C

C07C 403/22 (2006.01) C07C 45/51 (2006.01) C07C 45/65 (2006.01) C07C 47/21 (2006.01) C07C 47/24 (2006.01) C07C 49/203 (2006.01) C07C 323/22 (2006.01) C07C 391/02 (2006.01) C07C 403/14 (2006.01) C07F 7/08 (2006.01)

Patent

CA 2084046

NOUVEAUX INTERMEDIAIRES DE PREPARATION DES VITAMINES A et E ET DES CAROTENOIDES RHONE POULENC NUTRITION ANIMALE ABREGE La présente invention concerne de nouveaux intermédiaires des vitamines A et E et des caroténoïdes à la formule générale (II) suivante: Image (II) dans laquelle les radicaux R représente des motifs hydrogène, alkyle, alkényle, A représente un halogène choisi parmi le chlore et le brome, un groupe arylthio ouarylséléno, n' est un nombre compris entre 0 et 10. La présente invention concerne aussi un procédé de préparation de ces intermédiaires.

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