21578-58-5Relevant articles and documents
A one-pot method for the synthesis of 2-aminobenzimidazoles and related heterocycles
Cee, Victor J.,Downing, Nicholas S.
, p. 3747 - 3750 (2006)
A rapid and efficient one-pot method for the synthesis of 2-aminobenzimidazoles and related heterocycles is described. The reaction is mediated by a polymer-supported carbodiimide, which simplifies product isolation. The scope and limitations of this method are described.
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.
BENZIMIDAZOLO[1,2-A]BENZIMIDAZOLE CARRYING BENZIMIDAZOLO[1,2-A]BENZIMIDAZOLYL GROUPS, CARBAZOLYL GROUPS, BENZOFURANE GROUPS OR BENZOTHIOPHENE GROUPS FOR ORGANIC LIGHT EMITTING DIODES
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Page/Page column 279, (2017/05/07)
Benzimidazolo[1,2-a]benzimidazole carrying benzimidazolo[1,2-a]benzimidazolylyl groups, carbazolyl groups, dibenzofurane groups, dibenzothiophene groups, fluorenyl groups or dibenzosilolyl groups, an organic electronic device, comprising said benzimidazolo[1,2-a]benzimidazole carrying groups, a charge transport layer, charge blocking layer/exciton blocking layer, or an emitting layer comprising said benzimidazolo[1,2-a]benzimidazole carrying groups, an apparatus selected from the group consisting of stationary visual display units; mobile visual display units; illumination units; keyboards; items of clothing; furniture; wallpaper, comprising said organic electronic device, or said charge transport layer, said charge/exciton blocking layer, or said emitting layer, the use of said benzimidazolo[1,2-a]benzimidazole carrying groups for organic electroluminescent devices, electrophotographic photoreceptors, photoelectric converters, organic solar cells, switching elements, organic light emitting field effect transistors, image sensors or dye lasers, and a process for the preparation of said benzimidazolo[1,2-a]benzimidazole carrying groups.