Synthesis and spectral characterization of some 3-(1-aryl-9,10-dihydro-4-azaphenanthren-3-yl)coumarins
作者:Dinker Ishwarbhai Brahmbhatt、Niraj H Patel、Anil K Patel、Chirag V Patel、Apoorva A Patel
DOI:10.3998/ark.5550190.0011.223
日期:——
Various 3-(1-aryl-9,10-dihydro-4-azaphenanthren-9-yl)coumarins 3a-o were synthesized by reacting various 3-coumarinoyl methyl pyridinium salts 1a-c with appropriate 2-benzylidene-1-tetralone 2a-e in the presence of ammonium acetate and acetic acid under the Krohnke's reaction condition. The structures of all the synthesized compounds were established on the basis of elemental and spectral analysis.
UV-light induced domino type reactions: synthesis and photophysical properties of unreported nitrogen ring junction quinazolines
作者:Jeyakannu Palaniraja、Selvaraj Mohana Roopan
DOI:10.1039/c5ra00229j
日期:——
An expedient method for the synthesis of 5,6-dihydrobenzo[h][1,2,4]triazolo[5,1-b]quinazolines by UV light has been developed.
已开发出一种利用紫外光合成5,6-二氢苯并[h][1,2,4]三唑[5,1-b]喹唑啉的方法。
Synthesis of Fused Bromofurans via Mg-Mediated Dibromocyclopropanation of Cycloalkanone-Derived Chalcones and Cloke–Wilson Rearrangement
作者:Elumalai Gopi、Irishi N. N. Namboothiri
DOI:10.1021/jo3022988
日期:2013.2.1
dibromocyclopropanation of alkylidenecycloalkanone followed by acidic alumina-mediated regioselective ring expansion of the cyclopropyl ketone. The scope of the reaction was investigated using alkylidenecycloalkanones derived from tetralone, indanone, and benzosuberone to afford 2-aryl-3-bromofurans fused to various benzocycloalkanes. Representative examples of stereoconvergent dibromocyclopropanation and