Investigation of the Reaction of <i>o</i>-Aminonitriles with Ketones: A New Modification of Friedländer Reaction and Structures of Its Products
作者:Jiarong Li、Lijun Zhang、Daxin Shi、Qing Li、Dong Wang、Chunxia Wang、Qi Zhang、Ling Zhang、Yanqiu Fan
DOI:10.1055/s-2007-1000841
日期:2008.1
A new modification of the Friedlander reaction is described and the new byproduct obtained from the reaction of O-aminonitriles and ketones was found to be 2,3-dihydroquinazolin-4(1 H)-one. The mechanism probably involved the formation of an intermediate oxazine, via the Pinner reaction and its transformation into new products via the Dimroth rearrangement.
A simple and convenient approach to the Friedländer synthesis of pyrano[2,3-b]pyridines
作者:Nagarajan Panneer Selvam、Thelagathoti Hari Babu、Paramasivan T. Perumal
DOI:10.1016/j.tet.2009.08.025
日期:2009.10
SnCl2·2H2O mediated efficient synthesis of pyrano[2,3-b]pyridines was achieved by the Friedländer reaction of 2-amino-3-cyano-4H-pyrans with cyclopentanone/cyclohexanone under solvent-free condition.
在无溶剂条件下,通过2-氨基-3-氰基-4 H-吡喃与环戊酮/环己酮的Friedländer反应,实现了SnCl 2 ·2H 2 O介导的吡喃并[2,3- b ]吡啶的高效合成。