Oxazine derivatives can be prepared with yield upto 98% within a few minutes by an efficient and novel one pot microwave- assisted three- componentreaction from 1-naphthol, various anilines and formalin using montmorillonite as the catalyst. The procedure is very simple, efficient and environmentally friendly as it does not use any toxic auxiliary or solvent. The key advantages of this process are
Polyethylene glycol (PEG) mediated expeditious synthetic route to 1,3-oxazine derivatives
作者:Pravin V. Shinde、Amol H. Kategaonkar、Bapurao B. Shingate、Murlidhar S. Shingare
DOI:10.1016/j.cclet.2011.01.011
日期:2011.8
Various 1,3-oxazine derivatives were synthesized in high yields, within shorter reaction times using PEG-400 as a safer medium/mediator. This synthetic route is exceedingly easy and avoids the use of acid/base catalysts. (C) 2011 Murlidhar S. Shingare. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.