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An efficient one‐pot three component synthesis of 1,2‐dihydro‐1‐arylnaphtho[1,2‐e][1,3]oxazine‐3‐ones using montmorillonite K10 under solvent free conditions
Author(s) -
Kantevari Srinivas,
Vuppalapati Srinivasu V. N.,
Bantu Rajashaker,
Nagarapu Lingaiah
Publication year - 2010
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.312
Subject(s) - chemistry , thiourea , montmorillonite , aldehyde , reusability , condensation , urea , condensation reaction , solvent , component (thermodynamics) , catalysis , organic chemistry , physics , software , computer science , thermodynamics , programming language
An efficient green protocol for the preparation of 1,2‐dihydro‐1‐arylnaphtho[1,2‐e][1,3]oxazine‐3‐ones employing a three‐component one‐pot condensation reaction of β‐naphthol, aromatic aldehyde, urea or thiourea in the presence of montmorillonite K10 clay under solvent free conditions has been described. The present procedure offers advantages such as shorter reaction time (<90 min), simple workup, excellent yields, recovery and reusability of catalyst. J. Heterocyclic Chem., (2010).