Process for making 2-(4'-aminophenyl) 5-amino benzimidazole

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07D23518

Patent

active

041090934

ABSTRACT:
A process for preparing 2-(4'-aminophenyl) 5-amino benzimidazole, a known intermediate used in the synthesis of azo dyes, is disclosed wherein p-nitrobenzoic acid is condensed with aniline, and the N(4'-nitrobenzoyl) aniline produced is dinitrited to N(4'-nitrobenzoyl) 2,4-dinitroaniline; the latter is reduced to the corresponding triamine, which, upon cyclodehydration, results in the 2-(4'-aminophenyl) 5-amino benzimidazole.

REFERENCES:
patent: 3013051 (1961-12-01), Richter
patent: 3095422 (1963-06-01), Duennenberger et al.
patent: 3161678 (1964-12-01), Thominet
patent: 3192226 (1965-06-01), Sarett et al.
patent: 3235559 (1966-02-01), Blocher et al.
patent: 3466330 (1969-09-01), Tanida et al.
patent: 3485865 (1969-12-01), Richter et al.
patent: 3586694 (1971-06-01), Shen et al.
patent: 3632397 (1972-01-01), Soper
patent: 3681376 (1972-08-01), Scherer et al.
patent: 3822311 (1974-07-01), Wedemeyer et al.
Kym Berichte 1899, vol. 32, pp. 2178-2180.
Porai-Koshits, Chem. Abst. 1958, vol. 52, columns 17240-17241.
Noller Chemistry of Organic Compounds, 2nd ed., pp. 160 & 244, Philadelphia, Saunders, 1957.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process for making 2-(4'-aminophenyl) 5-amino benzimidazole does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for making 2-(4'-aminophenyl) 5-amino benzimidazole, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making 2-(4'-aminophenyl) 5-amino benzimidazole will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1560033

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.