| 摘要 |
1. A process for selective addition of a cyclic secondary amine of general formula : see diagramm : EP0176398,P8,F5 in which R1 and R2 form together with the nitrogen atom to which they are attached a piperidino or phorpholino radical, to a 1,3-butadiene of general formula : see diagramm : EP0176398,P9,F1 in which the symbols R, which may be identical or different, denote a hydrogen atom or an aliphatic hydrocarbon radical chosen from alkyl radicals containing 1 to 20 carbon atoms and alkenyl radicals containing 2 to 20 carbon atoms, and containing one or more double bonds, wherein the reaction is performed in water or in an aqueous alcoholic medium containing at most 50% by volume of an aliphatic alcohol containing 1 to 3 carbon atoms, in the presence of a water-soluble catalyst consisting of, on the one hand a water-soluble sulphonated phosphine, and on the other hand a rhodium compound, and the mixture of the products of general formula : see diagramm : EP0176398,P9,F2 see diagramm : EP0176398,P9,F3 and see diagramm : EP0176398,P9,F4 in which the symbols R, R1 and R2 are defined as above, is isolated. |
