References
- Rao , Y. S. 1964 . Chem. Rev. , 64 : 353
- Rao , Y. S. 1976 . Chem. Rev. , 76 : 625
- Dungyan , M. T. and Avetisyan , A. A. 1977 . Russ. Chem. Rev. , 46 : 643
- Ward , R. S. 1982 . Chem. Soc. Rev. , 11 : 75
- Tantivatana , P. , Ruangrungsi , N. , Vaisiriraj , V. , Lankin , D. C. , Bhacca , N. S. , Borris , R. P. , Cordell , G. A. and Johnson , L. F. 1983 . J. Org. Chem. , 48 : 268
- Raap , R. , Chin , C. G. and Micetich , R. G. 1971 . Can. J. Chem. , 49 : 2143
- Padwa , A. and Pehm , D. 1975 . J. Org. Chem. , 40 : 3139
- Vijayaraghavan , S. T. and Balasubramanian , T. R. 1986 . Ind. J. Chem. , 25B : 760
- 1972 . C. A.76, P59614a
- Kingston , J. F. and Weiler , L. 1977 . Can. J. Chem. , 55 : 785
- Kaltenbronn , J. S. 1973 . J. Med. Chem. , 16 : 490
- Shaw , K. N. F. , Armstrong , M. D. and McMillan , A. 1956 . J. Org. Chem. , 21 : 1149
- IR spectra were recorded on a Perkin-Elmer spectrophotometer.1H-NMR spectra were obtained with a Varin T-60 or FT-80 spectrometer using Me4Si as an internal standard. Mass spectral analyses were conducted using Finnigan MAT automated GC/MS 1020, electron impact, 70 eV. All melting points were uncorrected and elemental analysis was satisfactory.