FR2297849A1 - 2-(4'-aminophenyl)-5-amino-benzimidazole prepn. - from para-nitrobenzoic acid by condensn. with aniline,di-nitration, redn. and cyclo-dehydration(BE130776) - Google Patents

2-(4'-aminophenyl)-5-amino-benzimidazole prepn. - from para-nitrobenzoic acid by condensn. with aniline,di-nitration, redn. and cyclo-dehydration(BE130776)

Info

Publication number
FR2297849A1
FR2297849A1 FR7500924A FR7500924A FR2297849A1 FR 2297849 A1 FR2297849 A1 FR 2297849A1 FR 7500924 A FR7500924 A FR 7500924A FR 7500924 A FR7500924 A FR 7500924A FR 2297849 A1 FR2297849 A1 FR 2297849A1
Authority
FR
France
Prior art keywords
prepn
aniline
amino
benzimidazole
cyclo
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7500924A
Other languages
French (fr)
Other versions
FR2297849B1 (en
Inventor
Aime Arsac
Pierre Frank
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
Original Assignee
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Produits Chimiques Ugine Kuhlmann, Ugine Kuhlmann SA filed Critical Produits Chimiques Ugine Kuhlmann
Priority to FR7500924A priority Critical patent/FR2297849A1/en
Priority to US05/647,240 priority patent/US4109093A/en
Priority to CS76190A priority patent/CS200485B2/en
Priority to NL7600274A priority patent/NL7600274A/en
Priority to BR7600157A priority patent/BR7600157A/en
Priority to DE19762601041 priority patent/DE2601041A1/en
Priority to GB1146/76A priority patent/GB1531161A/en
Priority to BE163486A priority patent/BE837528A/en
Priority to CH32876A priority patent/CH612940A5/xx
Priority to JP51003741A priority patent/JPS5840545B2/en
Priority to IT67073/76A priority patent/IT1055787B/en
Publication of FR2297849A1 publication Critical patent/FR2297849A1/en
Application granted granted Critical
Publication of FR2297849B1 publication Critical patent/FR2297849B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
    • C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
    • C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
    • C07D235/18—Benzimidazoles; Hydrogenated benzimidazoles with aryl radicals directly attached in position 2

Abstract

2-(4'-Amino-phenyl)-5-amino-benzimidazole (A) is prepd. by condensing p-nitrobenzoic acid (I) with aniline, di-nitrating the N-(4'-nitrobenzoyl)-aniline (II) obtd. to form N-(4'-nitrobenzoyl)-2,4-dinitroaniline (III), reducing (III) to the corresponding triamine (IV) and cyclo-dehydrating (IV) to (A). Process also relates to prepn. of the 6-Cl-or 6-alkyl-deriv. of (A). (A) is an inter. in the prepn. of polyazo dyes. (A) can be prepd. economically, in high yields, from readily available materials.
FR7500924A 1975-01-14 1975-01-14 2-(4'-aminophenyl)-5-amino-benzimidazole prepn. - from para-nitrobenzoic acid by condensn. with aniline,di-nitration, redn. and cyclo-dehydration(BE130776) Granted FR2297849A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
FR7500924A FR2297849A1 (en) 1975-01-14 1975-01-14 2-(4'-aminophenyl)-5-amino-benzimidazole prepn. - from para-nitrobenzoic acid by condensn. with aniline,di-nitration, redn. and cyclo-dehydration(BE130776)
US05/647,240 US4109093A (en) 1975-01-14 1976-01-07 Process for making 2-(4'-aminophenyl) 5-amino benzimidazole
CS76190A CS200485B2 (en) 1975-01-14 1976-01-12 Process for preparing 2-/4'-aminophenyl/-5-aminobenzimidazole
BR7600157A BR7600157A (en) 1975-01-14 1976-01-13 (AMINO 4-PHENYL) -2-AMINO-5-BENZIMIDAZOL PREPARATION PROCESS
DE19762601041 DE2601041A1 (en) 1975-01-14 1976-01-13 PROCESS FOR THE PREPARATION OF 2- (4'-AMINO-PHENYL) -5-AMINO-BENZIMIDAZOLE
GB1146/76A GB1531161A (en) 1975-01-14 1976-01-13 Process for the preparation of 2-(4'-amino-phenyl)-6-amino-benzimidazole
NL7600274A NL7600274A (en) 1975-01-14 1976-01-13 PROCESS FOR PREPARING 2- (4-AMINOPHENYL) -5-AMINOBENZIMIDAZOL.
BE163486A BE837528A (en) 1975-01-14 1976-01-13 NEW PROCESS FOR THE PREPARATION OF (AMINO-4'PHENYL) -2 AMINO-5BENZIMIDAZOLE
CH32876A CH612940A5 (en) 1975-01-14 1976-01-13
JP51003741A JPS5840545B2 (en) 1975-01-14 1976-01-14 Method for producing 2-(4'amino-phenyl)-5-aminobenzimidazole
IT67073/76A IT1055787B (en) 1975-01-14 1976-01-14 PREPARATION PROCEDURE FOR AMINO 4 FENIL 2 AMINO 5 BENZIMIDAZOLE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7500924A FR2297849A1 (en) 1975-01-14 1975-01-14 2-(4'-aminophenyl)-5-amino-benzimidazole prepn. - from para-nitrobenzoic acid by condensn. with aniline,di-nitration, redn. and cyclo-dehydration(BE130776)

Publications (2)

Publication Number Publication Date
FR2297849A1 true FR2297849A1 (en) 1976-08-13
FR2297849B1 FR2297849B1 (en) 1979-01-19

Family

ID=9149716

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7500924A Granted FR2297849A1 (en) 1975-01-14 1975-01-14 2-(4'-aminophenyl)-5-amino-benzimidazole prepn. - from para-nitrobenzoic acid by condensn. with aniline,di-nitration, redn. and cyclo-dehydration(BE130776)

Country Status (2)

Country Link
BE (1) BE837528A (en)
FR (1) FR2297849A1 (en)

Also Published As

Publication number Publication date
BE837528A (en) 1976-07-13
FR2297849B1 (en) 1979-01-19

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Legal Events

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CD Change of name or company name
TP Transmission of property
ST Notification of lapse