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GB1348460A - Preparation of 5/6-acyl-benzimidazolyl alkyl carbamates - Google Patents

Preparation of 5/6-acyl-benzimidazolyl alkyl carbamates

Info

Publication number
GB1348460A
GB1348460A GB4583072A GB1348460DA GB1348460A GB 1348460 A GB1348460 A GB 1348460A GB 4583072 A GB4583072 A GB 4583072A GB 1348460D A GB1348460D A GB 1348460DA GB 1348460 A GB1348460 A GB 1348460A
Authority
GB
United Kingdom
Prior art keywords
alkyl
formula
acyl
preparation
benzimidazolyl
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
GB4583072A
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.)
Chinoin Private Co Ltd
Original Assignee
Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Zrt
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
Priority claimed from HUCI001172 external-priority patent/HU163393B/hu
Application filed by Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Zrt filed Critical Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Zrt
Publication of GB1348460A publication Critical patent/GB1348460A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D235/00Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
    • C07D235/02Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
    • C07D235/04Benzimidazoles; Hydrogenated benzimidazoles
    • C07D235/24Benzimidazoles; 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
    • C07D235/30Nitrogen atoms not forming part of a nitro radical
    • C07D235/32Benzimidazole-2-carbamic acids, unsubstituted or substituted; Esters thereof; Thio-analogues thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

1348460 Preparation of 5/6-acyl-benzimidazolyl-alkyl carbamates CHINOIN GYOGYSZER ES VEGYESZETI TERMEKEK GYARA RT 4 Oct 1972 [6 Oct 1971] 45830/72 Heading C2C Compounds of formula and salts thereof (wherein R represents C 1-4 alkyl; R 1 represents a C 1-4 alkyl group or a phenyl group optionally substituted by one or more substituents selected from halogen atoms, C 1-4 alkyl or alkoxy groups, and the R 1 -CO group is bound to the benzimidazole ring at positions 5 or 6) are prepared by reacting a compound of formula or a salt thereof (wherein R<SP>1</SP> is as defined above) with a compound of formula (wherein R is as defined above). The intermediates of Formula III may be obtained by treating a chloroformate ester with calcium cyanamide.
GB4583072A 1971-10-06 1972-10-04 Preparation of 5/6-acyl-benzimidazolyl alkyl carbamates Expired GB1348460A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HUCI001172 HU163393B (en) 1971-10-06 1971-10-06
GB4583072 1972-10-04

Publications (1)

Publication Number Publication Date
GB1348460A true GB1348460A (en) 1974-03-20

Family

ID=26265678

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4583072A Expired GB1348460A (en) 1971-10-06 1972-10-04 Preparation of 5/6-acyl-benzimidazolyl alkyl carbamates

Country Status (1)

Country Link
GB (1) GB1348460A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129832A1 (en) * 1983-06-25 1985-01-02 Hoechst Aktiengesellschaft Process for the reduction of the formation of by-products during the preparation of carbendazim
CN110283128A (en) * 2019-06-17 2019-09-27 连云港市亚晖医药化工有限公司 Utilize the method for Methyl cyanocarbamate synthesis mebendazole
WO2021184059A1 (en) * 2020-03-14 2021-09-23 Newsouth Innovations Pty Limited Treatment methods

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129832A1 (en) * 1983-06-25 1985-01-02 Hoechst Aktiengesellschaft Process for the reduction of the formation of by-products during the preparation of carbendazim
CN110283128A (en) * 2019-06-17 2019-09-27 连云港市亚晖医药化工有限公司 Utilize the method for Methyl cyanocarbamate synthesis mebendazole
WO2021184059A1 (en) * 2020-03-14 2021-09-23 Newsouth Innovations Pty Limited Treatment methods

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee