| abstract |
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]. |