Selective Ketalization of Steroidal 3,11,17-Trione using Chlorotrimethylsilane as Catalyst

References

• Fonken , G. J. 1961 . J. Org. Chem , 26 : 2549
   Google Scholar
• Allen , W. S. , Bernstein , S. and Littell , R. 1954 . J. Am. Chem. Soc , 76 : 6116
   Google Scholar
• Campbell , J. A. , Babock , J. C. and Hogg , J. A. 1958 . J. Am. Chem. Soc , 80 : 4717
   Google Scholar
• Auel , R. A. M. , Freerksen , R. W. and Watt , D. S. 1978 . Steroids , 31 : 361
   Google Scholar
• Lowenthal , H. J. E. 1959 . Tetrahedron , 6 : 269
   Google Scholar
• Brown , J. J. , Lenhard , R. H. and Bernstein , S. 1964 . J. Am. Chem. Soc , 86 : 2183
   Web of Science ®Google Scholar
• Engel , Ch. R. 1957 . Can. J. Chem , 35 : 121
   Google Scholar
• Bernstein , S. , Heller , M. and Allen , W. S. 1961 . J. Org. Chem , 26 : 2426
   Google Scholar