Process for preparing cyclic phosphines

Details Process for preparing cyclic phosphines Process for preparing cyclic phosphines

C - Chemistry, Metallurgy

07

F

C07F 9/6568 (2006.01) C07F 9/50 (2006.01) C07F 17/02 (2006.01)

Patent

CA 2307192

The preparation of a cyclic phosphine from the corresponding primary phosphine and a bifunctional alkylating agent, wherein alkylation, and displacement of each functional group, occurs in the presence of a strong base, is modified by adding the strong base, in an amount sufficient for cyclisation, to a preformed mixture or reaction product of the primary phosphine and the alkylating agent.

On modifie la préparation d'une phosphine cyclique à partir de la phosphine primaire correspondante et d'un agent d'alkylation bifonctionnel, dont l'alkylation - et le déplacement de chaque groupe fonctionnel - se produit en présence d'une base forte, en ajoutant une base forte, en dose suffisante pour une cyclisation, à un mélange préformé ou à un produit de réaction de la phosphine primaire et de l'agent d'alkylation.

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