127844-59-1Relevant articles and documents
Silica gel supported TaBr5: New catalyst for the facile and rapid cyclization of 2′-aminochalcones to the corresponding 2-aryl-2,3-dihydroquinolin-4(1H)-ones under solvent-free conditions
Ahmed, Naseem,Van Lier, Johan E.
, p. 2725 - 2729 (2006)
Silica gel supported TaBr5 (5-10 mol %) is a new solid-support catalyst that can be used under solvent-free conditions for the facile and efficient isomerization of 2′-aminochalcones to the corresponding 2-aryl-2,3-dihydroquinolin-4(1H)-ones. The catalyst is easily prepared, stable and employed under environmentally friendly conditions.
Zirconyl Nitrate as an Efficient Catalyst for Facile Synthesis of 2-Aryl-2,3-dihydroquinolin-4(1 H)-one Derivatives in Aqueous Medium
Gorepatil, Amarsinha,Gorepatil, Pratapsinha,Gaikwad, Mahadev,Mhamane, Dattakumar,Phadkule, Ajit,Ingle, Vilas
, p. 235 - 237 (2018)
A simple, green, and efficient method is introduced for the synthesis of 2-aryl-2,3-dihydroquinolin-4(1 H)-ones under mild reaction conditions with improved yields by intramolecular cyclization of o -aminochalcones with zirconyl nitrate [Zn(O)(NO 3/
A general and efficient synthesis of 5,6-dihydrodibenzo[b,h][1,6]naphthyridine derivatives
Dobrowolski, Jeremy C.,Katen, Alice,Fraser, Benjamin H.,Bhadbhade, Mohan,Black, David StC.,Kumar, Naresh
, p. 5442 - 5445 (2016)
A two-step procedure for the synthesis of dihydrodibenzonaphthyridine derivatives from benzaldehydes and 2-aminoacetophenones, proceeding through a substituted dihydroquinolone intermediate, is described. The synthetic protocol allows for a versatile and robust coupling method between a range of 2-aminoacetophenones or 2-aminobenzophenones and a selection of substituted dihydroquinolones.
Alumina supported-CeCl3·7H2O-NaI: an efficient catalyst for the cyclization of 2′-aminochalcones to the corresponding 2-aryl-2,3-dihydroquinolin-4(1H)-ones under solvent free conditions
Ahmed, Naseem,van Lier, Johan E.
, p. 13 - 15 (2007)
We recently advanced silica gel supported-TaBr5 as an efficient catalyst for the isomerization of 2′-aminochalcones to the corresponding 2-aryl-2,3-dihydroquinolin-4(1H)-ones under solvent free conditions (Tetrahedron Lett. 2006, 47, 2725-2729)
Organometallic titanocene complex as highly efficient bifunctional catalyst for intramolecular Mannich reaction
Wang, Yunyun,Jian, Yajun,Wu, Ya,Sun, Huaming,Zhang, Guofang,Zhang, Weiqiang,Gao, Ziwei
, (2019/05/07)
Bifunctional catalysts bearing two catalytic sites, Lewis acidic organometallic titanocene and Br?nsted acidic COOH, have been assembled in situ from Cp2TiCl2 with carboxylic acid ligands, showing high catalytic activity over an intramolecular Mannich reaction towards synthesis of 2-aryl-2,3-dihydroquinolin-4(1H)-ones. The determination of the bifunctional catalyst Cp2Ti(C8H4NO6)2 was elucidated by single X-ray HR-MS and investigation of catalytic behavior. In particular, masking the Br?nsted acidic COOH catalytic site with dormant COOMe lowered the reaction yield greatly, indicating that two catalytic sites work together to maintain high catalytic efficiency.
Synthesis, molecular modeling and biological evaluation of aza-flavanones as α-glucosidase inhibitors
Kasturi, Sivaprasad,Surarapu, Sujatha,Bathoju, Chandra Chary,Uppalanchi, Srinivas,Dwivedi, Shubham,Perumal, Yogeeswari,Sigalapalli, Dilep Kumar,Babu, Bathini Nagendra,Ethiraj, Krishna S.,Anireddy, Jaya Shree
, p. 1618 - 1630 (2017/08/22)
An efficient acid catalyzed methodology has been employed to synthesize a variety of aza-flavanones and their α-glucosidase inhibitory activity is evaluated using acarbose, miglitol and voglibose as reference standards. Molecular modeling studies were per
