Process for the preparation of benzimidazolone-(2)

Details Process for the preparation of benzimidazolone-(2) Process for the preparation of benzimidazolone-(2)

1979-12-19

1981-05-26

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D23526

Patent

active

042699894

ABSTRACT:
Benzimidazolone-(2) is obtained in good yield and high purity when o-phenylene diamine is condensed with urea in water at a pH of 4 to 9 and a temperature above 90.degree. C.

REFERENCES:
patent: 4138568 (1979-02-01), Hari et al.
Ullmanns Encyklopedie der Technischen Chemie, 3rd Ed., vol. 8, p. 380, (Evidentiary).

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