References
- Al-Talib , M. and Tashtoush , H. 1987 . Tetrahedron Lett. , : 353
- Al-Talib , M. and Jochims , J. C. 1985 . Chem. Ber. , 118 : 1304
- Wurthwein , E.-U. 1981 . Angew. Chem. , 93 : 110
- Schroth , W. and Kluge , H. 1986 . Z. Chem. , : 94
- Stachel , H. D. 1959 . Angew. Chem. , 71 : 246
- Hartke , K. and Bartulin , J. 1962 . Angew. Chem. , 74 : 2l4
- Bradsher , C. K. 1974 . Adv. Heterocyclic Chem. , 16 : 289
- Lambrecht , J. , Zsolnai , L. , Huttenr , G. and Jochims , J. C. 1981 . Chem. Ber. , 114 : 3655