Process for conversion of benzimidazolones to benzotriazoles

Details Process for conversion of benzimidazolones to benzotriazoles Process for conversion of benzimidazolones to benzotriazoles

1981-01-05

1983-01-04

Daus, Donald G.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548260, 548305, C07D24918

Patent

active

043673376

ABSTRACT:
This invention relates to a process for producing triazoles which comprises effecting a mixture in an aqueous medium of at least one benzimidazolone and one or more nitrites and heating the mixture to temperatures ranging up to about 350.degree. C. while maintaining pressures at levels sufficient to keep effective amounts of water present for the reaction.

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patent: 3732239 (1973-05-01), Spatz et al.
patent: 3970667 (1976-07-01), Gengnagel
patent: 4138568 (1979-02-01), Hari et al.
patent: 4269989 (1981-05-01), Heise et al.
Elderfield, Robt., Heterocyclic Compounds, pp. 267-268, 285.
Damshroder et al.; Organic Synthesis, vol. 20, pp. 16-18; London, (1940).
Gabriello et al., Chem. Abst. 84: 164777u.

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