Method of reducing a functional group in an oxidised form

Details Method of reducing a functional group in an oxidised form Method of reducing a functional group in an oxidised form

C - Chemistry, Metallurgy

07

B

C07B 35/02 (2006.01) C07C 209/36 (2006.01) C07F 7/08 (2006.01) C07F 9/50 (2006.01)

Patent

CA 2563928

A novel method of reducing a functional group in an oxidised form. The invention relates more particularly to the reduction of aldehyde, ketone, ester, lactone, nitrile or phosphine oxide groups. The reduction method according to the invention is characterised in that it comprises exposing the substrate including the functional group to be reduced to the presence of a siloxane-type compound of the following formula (I), combined with a Lewis acid-type catalyst. In said formula (I): - R¿1 ?and R¿2?, which are the same or different, are an alkyl, cycloalkyle or aryl group, - X is a digit from 0 to 50.

La présente invention a pour objet un nouveau procédé de réduction d'un groupe fonctionnel sous forme oxydée. L'invention s'applique plus particulièrement à la réduction des groupes aldéhyde, cétone, ester, lactone, nitrile, oxyde de phosphine. Le procédé de réduction selon l'invention est caractérisé par le fait qu'il comprend la mise du substrat comprenant le groupe fonctionnel à réduire, en présence d'un composé de type siloxane répondant à la formule suivante (I) associé à un catalyseur de type acide de Lewis. Dans ladite formule (I): - R1, R2, identiques ou différents, représentent un groupe alkyle, cycloalkyle, aryle, - x est un nombre allant de 0 à 50.

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