Preparation of piperazinones for use as sulfur dioxide absorbent

Details Preparation of piperazinones for use as sulfur dioxide absorbent Preparation of piperazinones for use as sulfur dioxide absorbent

1989-10-06

1990-12-25

Hollrah, Glennon H.

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

Organic compounds

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

C07D24108

Patent

active

049804715

ABSTRACT:
The 2-piperazinones are made by reacting a 1-cyano-1-hydroxyalkane with ethylenediamine or a substituted ethylenediamine in aqueous solution. The process to make the 2-piperazinones suitable as a regenerable sulfur dioxide absorbing medium requires that the cyano compound be present in at least a molar equivalent amount to the diamine and that the resulting 2-piperazinone product be sparged with an inert gas.

REFERENCES:
patent: 2633467 (1952-02-01), de Benneville
patent: 2649450 (1953-08-01), Strong et al.
patent: 2700668 (1955-01-01), Strong et al.
patent: 4170650 (1979-10-01), Morris et al.
patent: 4530704 (1985-07-01), Jones et al.
patent: 4767860 (1988-08-01), Dunmore et al.
patent: 4783327 (1988-11-01), Treybig et al.
patent: 4814443 (1989-03-01), Treybig et al.

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