Secondary and tertiary phosphines and processes for their...

Details Secondary and tertiary phosphines and processes for their... Secondary and tertiary phosphines and processes for their...

C - Chemistry, Metallurgy

07

F

C07F 9/50 (2006.01) C07F 9/58 (2006.01)

Patent

CA 2127816

Secondary and tertiary phosphines and processes for their preparation Abstract The invention relates to secondary and tertiary phos- phines of the formula Image in which R is hydrogen, an aryl or benzyl group or a straight-chain or branched alkyl group, n is 1 or 2 and M is potassium or sodium. These phosphines are prepared by reacting either alkali metal salts of fluorobenzene-2,4-disulfonic acid with phosphine or with primary or secondary phosphines, or secondary phosphines of the type HP[C6H3-2,4-(SO3M)2]2 with a compound RX in which R is an alkyl, aryl or benzyl group and X is a halogen, in an aprotic solvent in the presence of at least stoichiometric quantities of a solid, powdered alkali metal hydroxide at temperatures of from 0 to 100°C.

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