Metal-free ring expansion of indoles with nitroalkenes: a simple, modular approach to 3-substituted 2-quinolones
作者:Alexander V. Aksenov、Alexander N. Smirnov、Nicolai A. Aksenov、Inna V. Aksenova、Jonathon P. Matheny、Michael Rubin
DOI:10.1039/c4ra14406f
日期:——
3-Substituted 2-quinolones are obtained via a novel metal-free transannulation reaction of 2-nitroolefins with 2-substitutedindoles in polyphosphoric acid. This acid-mediated cascade transformation operates via the ANRORC (Addition of Nucleophile, Ring Opening, and Ring Closure) mechanism and can be used in combination with the Fisher indole synthesis to offer a practical three-component hetero-annulation
Metal-free transannulation reaction of indoles with nitrostyrenes: a simple practical synthesis of 3-substituted 2-quinolones
作者:Alexander V. Aksenov、Alexander N. Smirnov、Nicolai A. Aksenov、Inna V. Aksenova、Liliya V. Frolova、Alexander Kornienko、Igor V. Magedov、Michael Rubin
DOI:10.1039/c3cc45696j
日期:——
3-Substituted 2-quinolones are obtained via a novel, metal-free transannulation reaction of 2-substituted indoles with 2-nitroalkenes in polyphosphoric acid. The reaction can be used in conjunction with the Fisher indole synthesis offering a practical three-component heteroannulation methodology to produce 2-quinolones from arylhydrazines, 2-nitroalkenes and acetophenone.
[EN] 6-SULFONYLAMINO QUINOLINE COMPOUNDS AS PLANT GROWTH REGULATORS<br/>[FR] COMPOSÉS 6-SULFONYLAMINO QUINOLÉINE UTILES EN TANT QUE RÉGULATEURS DE LA CROISSANCE DES PLANTES
申请人:UNIV CALIFORNIA
公开号:WO2016022915A1
公开(公告)日:2016-02-11
The present invention relates to novel sulfonamide derivatives, to processes and intermediates for preparing them, to plant growth regulator compositions comprising them and to methods of using them for controlling the growth of plants, improving plant tolerance to abiotic stress (including environmental and chemical stresses) and/or inhibiting the germination of seeds.
An iron porphyrin that is linked via an ethynyl unit to a chiral octahydro-1H-4,7-methanoisoindol-1-one scaffold serves as a potent catalyst for the enantioselective, visible light-mediated intermolecular amination of 3-arylmethyl-substituted quinolones and pyridones. A two-point hydrogen bonding interaction is responsible for the exquisite site- and enantioselectivity of the reaction.
通过乙炔基单元与手性八氢-1 H -4,7-methanoisoindol-1-one 支架连接的铁卟啉可作为对映选择性、可见光介导的 3-芳基甲基取代喹诺酮分子间胺化的有效催化剂和吡啶酮。两点氢键相互作用决定了反应的精确位点选择性和对映选择性。