REFERENCES
- Padmavathi , V. , Sumathi , R.P. , Chandrasekhar Babu , N. and Bhaskar Reddy , D. 1999 . J. Chem. Research (S) , : 610
- Padmavathi , V. , Sumathi , R.P. , Venugopal Reddy , K. and Bhaskar Reddy , D. 2000 . Synth. Commun. , 30 : 4007
- Just , G. and Dahl , K. 1968 . Tetrahedron , 24 : 5251
- Rai , K.M.L. , Liganna , N. , Hassner , A. and Murthy , C.A. 1992 . Org. Prep. Proced. Int. , 24 : 91
- Khim , J.N. and Ryu , E.K. 1990 . Synth. Commun. , 20 : 1373
- Hassner , A. and Rai , K.M.L. 1989 . Synthesis , : 57
- Ramalingam , K. , Berlin , K.D. , Loghry , R.A. , Helm , D.V. and Satyamurthy , N. 1979 . J. Org . Chem. , 44 : 477
- Padmavathi , V. , Bhaskar Reddy , A.V. , Sumathi , R.P. and Bhaskar Reddy , D. 1998 . Indian J. Chem. , 37B : 1286
- Hassaneen , H.M. , Hilal , R.H. , Elwan , N.M. , Harhash , A. and Shawali , A.S. 1984 . J. Heterocyclic. Chem. , 21 : 1013
- Vogel , A.I. 1989 . A Text Book of Practical Organic Chemistry London : Longman's Green & Co. Ltd. .