FR2067436A5 - N-carbamoyl benzimidazol-2-yl carbamic acid esters prepn - Google Patents

N-carbamoyl benzimidazol-2-yl carbamic acid esters prepn

Info

Publication number
FR2067436A5
FR2067436A5 FR6937806A FR6937806A FR2067436A5 FR 2067436 A5 FR2067436 A5 FR 2067436A5 FR 6937806 A FR6937806 A FR 6937806A FR 6937806 A FR6937806 A FR 6937806A FR 2067436 A5 FR2067436 A5 FR 2067436A5
Authority
FR
France
Prior art keywords
carbamoyl
halogen
prepn
benzimidazol
acid esters
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.)
Expired
Application number
FR6937806A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR6937806A priority Critical patent/FR2067436A5/en
Application granted granted Critical
Publication of FR2067436A5 publication Critical patent/FR2067436A5/en
Expired 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
    • C07D235/24—Benzimidazoles; Hydrogenated benzimidazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
    • C07D235/30—Nitrogen atoms not forming part of a nitro radical
    • C07D235/32—Benzimidazole-2-carbamic acids, unsubstituted or substituted; Esters thereof; Thio-analogues thereof

Abstract

N-carbamoyl benzimidazol-2-yl carbamic acid esters prepn. Cpds. of formula (I) (where R = one or more halogen, alkyl aryl, alkoxy, CN or NO2; R'=alkenyl, cycloalkyl, cyclodialkyl, (ar) alkyl, aryl, heteroaryl, heteroaralkyl, any of which opt. substd. by halogen, alkoxy, NO2 or CN; R2= (hetero)aryl, opt. substd. by halogen, alkyl, alkoxy, alkylthio, CN, NO2) are prepd. from a cpd. (II) (I; CONHR'=H) and a cpd. COX2 e.g. phosgene and treating the product with an amine R'-NH2 III or by treating II with a carbamoyl halide of formula R'-NH-CO-X (where X is halogen). The process avoids the use of expensive isocyanates used in conventional processes.
FR6937806A 1969-11-03 1969-11-03 N-carbamoyl benzimidazol-2-yl carbamic acid esters prepn Expired FR2067436A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6937806A FR2067436A5 (en) 1969-11-03 1969-11-03 N-carbamoyl benzimidazol-2-yl carbamic acid esters prepn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6937806A FR2067436A5 (en) 1969-11-03 1969-11-03 N-carbamoyl benzimidazol-2-yl carbamic acid esters prepn

Publications (1)

Publication Number Publication Date
FR2067436A5 true FR2067436A5 (en) 1971-08-20

Family

ID=9042547

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6937806A Expired FR2067436A5 (en) 1969-11-03 1969-11-03 N-carbamoyl benzimidazol-2-yl carbamic acid esters prepn

Country Status (1)

Country Link
FR (1) FR2067436A5 (en)

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Legal Events

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