Ring Size and Substitution Effects in the Tandem Reduction-Lactamization of<i>ortho</i>-Substituted Nitroarenes
作者:Baskar Nammalwar、Richard A. Bunce、John T. Hiett
DOI:10.1080/00304948.2015.1066643
日期:2015.9.3
Earlier work in this laboratory has explored the synthesis of heterocycles using tandem reaction strategies initiated under dissolving metal reduction conditions. The current investigation describes an evaluation of the scope of this process for the preparation of 2oxoindolines, 2-oxotetrahydroquinolines and 2-oxotetrahydro-1H-benzo[b]azepines. These moieties have value as synthetic building blocks, and
Organocatalytic Asymmetric Synthesis of 3,3-Disubstituted 3,4-Dihydro-2-quinolones
作者:Soumendranath Mukhopadhyay、Utpal Nath、Subhas Chandra Pan
DOI:10.1002/adsc.201700655
日期:2017.11.23
The first organocatalyticasymmetric reaction employing 3,4-dihydro-2-quinolone has been developed leading to the synthesis of biologically important 3,3-disubstituted-dihydro-2-quinolones. Cinchona alkaloid derived bifunctional amino-thiourea catalysts were found to be the best catalysts. The products were obtained in high enantio- and good diastereoselectivities and also few synthetic transformations
Chibani, A.; Hazard, R.; Jubault, M., Bulletin de la Societe Chimique de France, 1987, # 5, p. 795 - 802
作者:Chibani, A.、Hazard, R.、Jubault, M.、Tallec, A.
DOI:——
日期:——
Srivastava; Seth; Bhaduri, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1989, vol. 28, # 7, p. 562 - 573
作者:Srivastava、Seth、Bhaduri、Bhatnagar、Guru
DOI:——
日期:——
An organocatalytic asymmetric Mannich reaction for the synthesis of 3,3-disubstituted-3,4-dihydro-2-quinolones
作者:Soumendranath Mukhopadhyay、Subhas Chandra Pan
DOI:10.1039/c8ob01399c
日期:——
The first organocatalytic asymmetric Mannichreaction employing 3,4-dihydro-2-quinolones has been developed for the synthesis of biologically important 3,3-disubstituted-dihydro-2-quinolones. N-Boc imine precursor amidosulfones as well as pre-formed N-Boc imine were used for this purpose. Cyclohexyldiamine derived bifunctional amino-thiourea catalysts were employed to provide the products in high enantio-