Process for the preparation of bisphosphine dioxides

Details Process for the preparation of bisphosphine dioxides Process for the preparation of bisphosphine dioxides

C - Chemistry, Metallurgy

07

F

260/613

C07F 9/53 (2006.01)

Patent

CA 1195343

A B S T R A C T PROCESS FOR THE PREPARATION OF BISPHOSPHINE DIOXIDES A process for the preparation of a bisphosphine dioxide with formula Image in which R1, R2, R3 and R4, being the same or different, re- present substituted or unsubstituted alkyl-, aryl-, alkaryl- or aralkyl groups or an alkylene group is formed by R1 and R2 and/or R3 and R4 respectively, R5 represents H, R6 represents H or a substituted or unsubstituted alkyl-, aryl-, alkaryl- or aralkyl group, or R5 and R6 form an alkylene group, by contacting in an aprotic solvent and in the presence of a basic compound an oxirane with formula: Image with one or more phosphine oxides with formula: and/or Image Image

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