References
- Varma , S.R. and Dahiya , R. 1997 . Tetrahedron Lett. , 38 : 7823
- Varma , S.R. and Dahiya , R. 1997 . Tetrahedron Lett. , 38 : 2043
- Varma , S.R. and Dahiya , R. 1998 . Synth. Commun. , 28 ( 21 ) : 4087
- Einhorn , J. , Einhorn , C. , Ratajczak , F. and Pierre , J.L. 1996 . J. Org. Chem. , 61 : 7452
- Srinivasan , R. , Akila , S. , Caroline , J. and Balasubramanian , K. 1998 . Synth. Coumm. , 28 ( 12 ) : 2245
- Cornelis , A. and Laszlo , P. 1980 . Synthesis , : 849
- Cornelis , A. and Laszlo , P. 1985 . Synthesis , : 909
- Nishiguchi , T. and Asano , F. 1988 . Tetrahedron lett. , : 6265
- Nishiguchi , T. and Asano , F. 1989 . J. Org. Chem. , 54 : 1531 and references cited therein