References
- Dryanska , V. 1985 . Synth. Common. , 15 ( Part IV ) : 899
- Donnell , M. J. , Boniece , J. M. and Earp , S. E. 1978 . Tetrahedron Letters , : 2641
- Kauffman , Th. 1974 . Angew. Chem. Internat. Edit. , 13 : 627
- Kauffman , Th. and Eidenschink , R. 1971 . Angew. Chem. , 83 : 794
- Lakour , A. 1974 . Bull. Soc. Chim. Fr. , : 1411
- Armesto , D. , Ortiz , M. J. and Perez-Ossorio , R. 1981 . Tetrahedron Letters , : 2203
- Dryanska , V. , Ivanov , C. and Krusteva , R. 1984 . Synthesis , : 1038