Eco-friendly synthesis of highly substituted functionalized oxazines by FeCl3/SiO2 nanoparticles
作者:Javad Safaei Ghomi、Safura Zahedi
DOI:10.1007/s00706-012-0850-1
日期:2013.5
solvent-free conditions is explained. The prepared amidoalkyl naphthols were converted to 1,3-oxazines by Vilsmeier reagent in the presence of FeCl3/SiO2 nanoparticles. This method provides a novel route to synthesis amidoalkyl naphthol and 1,3-oxazine derivatives in terms of good yields, short reaction times, and recyclable catalyst. Graphical abstract
Synthesis of highly functionalized oxazines by Vilsmeier cyclization of amidoalkyl naphthols
作者:M. Damodiran、N. Panneer Selvam、Paramasivan T. Perumal
DOI:10.1016/j.tetlet.2009.07.051
日期:2009.9
The intramolecular cyclization of amidoalkyl naphthols by Vilsmeierreagent produced 1,3-oxazines. The Vilsmeierreagent (chloromethylenedimethylammonium chloride) has been used as an efficient and cheap acid activator for the one-stepsynthesis of oxazine derivatives. A mechanism involving sequential haloformylation and intramolecular nucleophilic cyclization is proposed.
AgI nanoparticles as a remarkable catalyst in the synthesis of (amidoalkyl)naphthol and oxazine derivatives: an eco-friendly approach
作者:Javad Safaei Ghomi、Safura Zahedi、Mohammad Ali Ghasemzadeh
DOI:10.1007/s00706-014-1184-y
日期:2014.7
AgI nanoparticles were discovered to be an effectual heterogeneous nanocatalyst for the preparation of (amidoalkyl)naphthol and oxazine derivatives under solvent-free conditions. The advantages of the present approach are short reaction times, moderate temperature, premier yields, eco-friendly reaction conditions, simple purification and good reusability of the catalyst.