Literature DB >> 20963217

Cobalt-catalyzed intramolecular C-N and C-O cross-coupling reactions: synthesis of benzimidazoles and benzoxazoles.

Prasenjit Saha1, Md Ashif Ali, Pokhraj Ghosh, Tharmalingam Punniyamurthy.   

Abstract

Cobalt(ii)-complex catalyzes efficiently the intramolecular C-N and C-O cross-couplings of Z-N'-(2-halophenyl)-N-phenylamidines and N-(2-bromophenyl)benzamides to afford the corresponding substituted benzimidazoles and benzoxazoles in the presence of K(2)CO(3) at moderate temperature. The protocol is general, air stable and affords the products selectively in moderate to high yield.

Entities:  

Year:  2010        PMID： 20963217     DOI： 10.1039/c0ob00405g

Source DB:  PubMed          Journal:  Org Biomol Chem        ISSN： 1477-0520            Impact factor:   3.876


  7 in total

1.  Synthesis of benzoxazoles via an iron-catalyzed domino C-N/C-O cross-coupling reaction.

Authors:  Bo Yang; Weiye Hu; Songlin Zhang
Journal:  RSC Adv       Date:  2018-01-09       Impact factor: 4.036

2.  Cascade palladium catalysis: a predictable and selectable regiocontrolled synthesis of N-arylbenzimidazoles.

Authors:  Nathan T Jui; Stephen L Buchwald
Journal:  Angew Chem Int Ed Engl       Date:  2013-09-13       Impact factor: 15.336

3.  PIII /PV =O Catalyzed Cascade Synthesis of N-Functionalized Azaheterocycles.

Authors:  Trevor V Nykaza; Gen Li; Junyu Yang; Michael R Luzung; Alexander T Radosevich
Journal:  Angew Chem Int Ed Engl       Date:  2020-01-29       Impact factor: 15.336

4.  Efficient Cu-catalyzed intramolecular O-arylation for synthesis of benzoxazoles in water.

Authors:  Yanling Tang; Minxin Li; Hui Gao; Gaoxiong Rao; Zewei Mao
Journal:  RSC Adv       Date:  2020-04-07       Impact factor: 4.036

5.  A bioinspired catalytic aerobic oxidative C-H functionalization of primary aliphatic amines: synthesis of 1,2-disubstituted benzimidazoles.

Authors:  Khac Minh Huy Nguyen; Martine Largeron
Journal:  Chemistry       Date:  2015-07-23       Impact factor: 5.236

6.  Aqueous synthesis of 1-H-2-substituted benzimidazoles via transition-metal-free intramolecular amination of aryl iodides.

Authors:  Chunxia Chen; Chen Chen; Bin Li; Jingwei Tao; Jinsong Peng
Journal:  Molecules       Date:  2012-10-24       Impact factor: 4.411

7.  Copper-Promoted One-Pot Approach: Synthesis of Benzimidazoles.

Authors:  S N Murthy Boddapati; Ramana Tamminana; Ravi Kumar Gollapudi; Sharmila Nurbasha; Mohamed E Assal; Osamah Alduhaish; Mohammed Rafiq H Siddiqui; Hari Babu Bollikolla; Syed Farooq Adil
Journal:  Molecules       Date:  2020-04-14       Impact factor: 4.411
  7 in total

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