Zwitterionic phosphonium salts

C - Chemistry – Metallurgy – 07 – F

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C07F 9/54 (2006.01) C07C 1/207 (2006.01) C07C 41/56 (2006.01)

Patent

CA 2732390

A zwitterionic phosphonium salt of Formula I: wherein n is 0 or 1; R is H or S03-; R' is selected from the group consisting of C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C3-C10 cycloalkyl, phenyl, substituted phenyl, benzyl and C1-C10 alkoxy-carbonyl; R' is CX3 when n is O; and X is selected from the group consisting of F, Cl, Br and I. The zwitterionic phosphonium salts are useful reagents for the preparation of alkenes and acetals from the corresponding aldehyde.

L'invention porte sur un sel de phosphonium zwitterionique représenté par la formule I : dans laquelle n représente 0 ou 1 ; R représente H ou SO3 - ; R' est choisi dans le groupe constitué par alkyle en C1-C10, alcényle en C2-C10, alcynyle en C2-C10, cycloalkyle en C3-C10, phényle, phényle substitué, benzyle et alcoxycarbonyle en C1-C10 ; R' représente CX3 lorsque n vaut 0 ; et X est choisi dans le groupe constitué par F, Cl, Br et I. Les sels de phosphonium zwitterioniques sont des réactifs utiles dans la préparation d'alcènes et d'acétals à partir de l'aldéhyde correspondant.

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