REFERENCES
- Green , G. R. ; Evans , J. M. ; Vong , A. K. In Comprehensive Heterocyclic Chemistry II ; A. R. Katritzky , C. W. Rees , E. F. V. Scriven (Eds.); Pergamon Press : Oxford , 1995 ; vol. 5 , p. 469 .
- Foye , W. O. Prinicipi di Chemico Farmaceutica ; Piccin : Padova , Italy , 1991 ; p. 416 .
- Bonsignore , L. ; Loy , G. ; Secci , D. ; Calignano , A. Synthesis and pharmacological activity of 2-oxo-(2H) 1-benzopyran-3-carboxamide derivatives . Eur. J. Med. Chem. 1993 , 28 , 517 .
- Martin , N. ; Pascual , C. ; Seoane , C. ; Soto , J. L. The use of some activated nitriles in heterocyclic syntheses . Heterocycles 1987 , 26 , 2811 .
- Armesto , D. ; Horspool , W. M. ; Martin , N. ; Ramos , A. ; Seaone , C. Synthesis of cyclobutenes by the novel photochemical ring contraction of 4-substituted 2-amino-3,5-dicyano-6-phenyl-4H-pyrans . J. Org. Chem. 1989 , 54 , 3069 .
- (a) Zhou , J. F. ; Tu , S. J. ; Gao , Y. ; Ji , M. One pot synthesis of pyrans and pyrano[2,3-c]pyrazole derivatives under microwave irradiation . Chin. J. Org. Chem. 2001 , 21 , 742 ; (b) Peng , Y. ; Song , G. Amino-functionalized ionic liquid as catalytically active solvent for microwave-assisted synthesisof 4H-pyrans . Catal. Commun. 2007 , 8 , 111 .
- Fotouhi , L. ; Heravi , M. M. ; Fatehi , A. ; Bakhtiari , K. Electrogenerated base-promoted synthesis of tetrahydrobenzo[b]pyran derivatives . Tetrahedron Lett. 2007 , 48 , 379 .
- Babu , N. S. ; Pasha , N. ; Rao , K. T. V. ; Prasad , P. S. S. ; Lingaiah , N. A heterogeneous strong basic Mg/La mixed oxide catalyst for efficient synthesis of polyfunctionalized pyrans . Tetrahedron Lett. 2008 , 49 , 2730 .
- Adibi , M. ; Mohajeri , A. Efficient solvent-free oxidative coupling of 2-naphthols by copper(II) oxymetasilicate under microwave irradiation . J. Chem. Res. 2003 , 230 .