83318-15-4Relevant articles and documents
Microwave-assisted hydrogen peroxide-mediated synthesis of benzoxazoles and related heterocycles via cyclodesulfurization
Kadagathur, Manasa,Sigalapalli, Dilep Kumar,Patra, Sandip,Tangellamudi, Neelima D.
supporting information, p. 2213 - 2224 (2021/05/26)
A novel approach has been developed to construct benzoxazoles and similar N- and S-containing heterocycles from their corresponding isothiocyanates and o-substituted anilines via cyclodesulfurization. The reaction was found to proceed via in situ formatio
Copper-promoted one-pot approach: Synthesis of benzimidazoles
Adil, Syed Farooq,Alduhaish, Osamah,Assal, Mohamed E.,Bollikolla, Hari Babu,Gollapudi, Ravi Kumar,Murthy Boddapati, S. N.,Nurbasha, Sharmila,Siddiqui, Mohammed Rafiq H.,Tamminana, Ramana
, (2020/04/24)
A facile, one-pot, and proficient method was developed for the production of various 2-arylaminobenzimidazoles. This methodology is based for the first time on a copper catalyst promoted domino C-N cross-coupling reaction for the generation of 2-arylaminobenzimidazoles. Mechanistic investigations revealed that the synthetic pathway involves a copper-based desulphurization/nucleophilic substitution and a subsequent domino intra and intermolecular C-N cross-coupling reactions. Some of the issues typically encountered during the synthesis of 2-arylaminobezimidazoles, including the use of expensive catalytic systems and the low reactivity of bromo precursors, were addressed using this newly developed copper-catalyzed method. The reaction procedure is simple, generally with excellent substrate tolerance, and provides good to high yields of the desired products.
Nickel-catalyzed Chan-Lam cross-coupling: Chemoselective: N -arylation of 2-aminobenzimidazoles
Kumar, K. Anil,Kannaboina, Prakash,Rao, D. Nageswar,Das, Parthasarathi
, p. 8989 - 8997 (2016/10/05)
A complementary set of Ni- and Cu-based catalyst systems for the selective N-arylation of 2-aminobenzimidazoles have been developed. Selective N-arylation of the primary amine (C-NH2) group was achieved by Ni-catalyzed, boronic acid promoted cr