References
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- All compounds were analyzed for C, H, analytical results beeing in agreement with the theoretical values
- Reese , C. B. 1973 . “Protective Groups in Organic Chemistry” , Edited by: Mc Omie , J. F.W. 98 – 100 . New York : Plenum Press .
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- Piancatelli , G. , Scettri , A. and D'Auria , M. 1980 . Tetrahedron , 36 : 661