REFERENCES
- Bonini B.F. , Phosphorus, Sulfur, Silicon , 74 , 31 ( 1993 ).
- Bonini B.F. Comes-Franchini M. Fochi M. Mazzanti G. Ricci A. , Tetrahedron , 52 , 4803 ( 1996 ).
- (a) Magnus P. Quagliato D.A. , J. Org. Chem. , 50 , 1621 ( 1985 ). (b) D.J. Ager, Tetrahedron Lett., 23, 1945 (1982).