Process for preparing hexamethylene bis-dicyandiamide

Details Process for preparing hexamethylene bis-dicyandiamide Process for preparing hexamethylene bis-dicyandiamide

1979-08-07

1981-02-10

Douglas, Winston A.

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

Organic compounds

Amino nitrogen containing

C07C14504

Patent

active

042501091

ABSTRACT:
Hexamethylene.bis-dicyandiamide is safely prepared in good yield and desired purity by a novel method which comprises reacting N-cyano-O (or S)-alkyl-iso (or isothio) urea with hexamethylenediamine. The desired product is useful as an intermediate of chlorhexidine which is an antibacterial agent.

REFERENCES:
patent: 2697727 (1954-12-01), Kaiseret al.
patent: 3597466 (1971-08-01), Smith
patent: 4157340 (1979-06-01), Crenshaw et al.
patent: 4158013 (1979-06-01), Crenshaw et al.
patent: 4163056 (1979-07-01), Kristiansen et al.
Journal of Organic Chemistry, vol. 32 pp. 1566-1572, Timmons et al., "The Chemisty of Cyanodithioimidocarbonic Acid," 1966.

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