Catalytic reforming of cyclic alkyleneamines

Details Catalytic reforming of cyclic alkyleneamines Catalytic reforming of cyclic alkyleneamines

1992-03-02

1993-10-26

Tsang, Cecilia

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

544357, 544358, 544401, 564469, 564470, 564478, 564479, 564480, 564512, C07D295023, C07D29513, C07C20916, C07C20964

Patent

active

052567869

ABSTRACT:
A process of reforming cyclic alkyleneamines to amine-extended cyclic alkyleneamines involving contacting a cyclic alkyleneamine or mixture of cyclic alkyleneamines in the liquid phase with a catalyst under reaction conditions. The catalyst is selected from the group consisting of (a) Group VB metal oxides, (b) Group VB metal phosphates, (c) silicates of Groups IIA, IIIB, IVB and VB, and (d) specified tungsten oxides. For example, piperazine or a mixture of piperazine and aminoethylpiperazine is contacted with magnesium silicate to yield a mixture of amine-extended piperazines, including 1,2-bis(piperazinyl)-ethane and N,N'-bis(2-piperazinylethyl)piperazine.

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