Tetrahedron Letters p. 1449 - 1452 (1998)
Update date:2022-08-02
Topics:
Cuadrado, Purificacion
Gonzalez-Nogal, Ana M.
1,3,5-trisubstituted-2-methylpyrazolium iodides react with dimethylphenylsilyl- and tert-butyldiphenylsilyllithium leading, in general, to one of the corresponding 5-silyl-3-pyrazolines. The silyl group is easily substituted by electrophiles to give 5-functionalized 3-pyrazolines. Moreover, 5-silyl-3-pyrazolines undergo thermic ring opening with silicon-rearrangement affording α-silylated β-diimines.
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(1980)
