Process for production of phosphine-borane complexes

C - Chemistry – Metallurgy – 07 – F

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C07F 9/50 (2006.01) C07F 5/02 (2006.01)

Patent

CA 2523980

A process for the production of phosphine-borane complexes represented by the general formula (I) or salts thereof: [wherein R1, R2 and R3 are each independently hydrogen, halogeno, optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted aryl, or an optionally substituted heterocyclic group (with the proviso that R1 and R2 together with the adjacent phosphorus atom may form a 4- to 6-membered ring)], characterized by converting a compound represented by the general formula (II) in a solvent in the presence of a borane reagent: [wherein each symbol is as defined above].

Cette invention concerne un procédé de production de complexes phosphine-borane représentés par la formule générale (I) ou de sels de ces complexes. [Dans cette formule, R?1¿, R?2¿ et R?3¿ représentent chacun indépendamment hydrogène, halogéno, alkyle éventuellement substitué, cycloalkyle éventuellement substitué, aryle éventuellement substitué ou un groupe hétérocyclique éventuellement substitué (à condition que R?1¿ et R?2¿ forment, avec l'atome de phosphore adjacent, un cycle à 4 à 6 chaînons)], lequel procédé se caractérise en ce qu'il consiste à convertir un composé représenté par la formule générale (II) dans un solvant en présence d'un réactif au borane. [Dans cette formule (II), chacun des symboles est tel que défini plus haut].

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