Process for the preparation of 2-benzimidazole carbamates

Details Process for the preparation of 2-benzimidazole carbamates Process for the preparation of 2-benzimidazole carbamates

1978-01-03

1979-05-01

Raymond, Richard

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

260454, 260578, 560159, C07D23532

Patent

active

041525221

ABSTRACT:
A process for preparing 2-benzimidazole carbamate compounds by condensing an alkyl cyano carbamate with an o-phenylenediamine produced by reacting an ortho-nitro-aniline with thiocyanogen followed by replacement of the cyanide with an alkyl group and then converting the nitro group to the amine.

REFERENCES:
patent: 3929823 (1975-12-01), Beard et al.
patent: 3935209 (1976-01-01), Beard et al.
patent: 3997553 (1976-12-01), Schlatter et al.
patent: 4010272 (1977-03-01), Loewe et al.
patent: 4093732 (1978-06-01), Haugwitz
Challenger et al., J. Chem. Soc., 1928, pp. 1364, 1365 and 1368.

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