Synthesis of cycloalkyldiarylphosphines

Details Synthesis of cycloalkyldiarylphosphines Synthesis of cycloalkyldiarylphosphines

C - Chemistry, Metallurgy

07

F

C07F 9/50 (2006.01)

Patent

CA 2253304

Phosphines having two aryl groups and one alkyl-substituted cycloalkyl group bonded to a phosphorus atom are formed by reacting an alkali metal diarylphosphide with a monoalkyl- or polyalkyl-substituted cycloalkyl mesylate or tosylate in which an alkyl group is in the 2-position, in a liquid reaction medium in which these reactants are soluble. This process avoids complications associated with prior known process technology for producing such phosphines. The phosphines are useful as ligands for making noble metal catalysts.

On prépare des phosphines possédant deux groupes aryle et un groupe cycloalkyle à substitution alkyle reliés à un atome de phosphore par réaction d'un diarylphosphure de métal alcalin avec un mésylate ou un tosylate de cycloalkyle à substitution mononalkyle ou polyalkyle dans lequel un groupe alkyle est en position 2, dans un milieu de réaction liquide dans lequel ces réactifs sont solubles. Ce procédé permet d'éviter les complications associées aux procédés actuels connus de préparation de phosphines. Ces phosphines sont utiles en tant que ligands pour préparer des catalyseurs à base de métaux nobles.

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