1. Formation of a Silylated 1-Silaallene via an Intermediate 1-Chloro-1-silaallene.
- Author
-
Stefan Spirk, Ferdinand Belaj, JoÌrg H. Albering, and Rudolf Pietschnig
- Subjects
- *
SILYLATION , *INTERMEDIATES (Chemistry) , *ALLENE , *ADDITION reactions , *SUBSTITUTION reactions , *ORGANOSILICON compounds , *ELIMINATION reactions , *HALOGENATION , *MOLECULAR structure - Abstract
Twofold conjugate addition to a 2,6-dimesitylphenyl-substituted dihaloalkynylsilane yields a silyl-substituted 1-silaallene rather than the isomeric silyne. The dehalogenative intramolecular carbometalation elimination using t-BuLi proceeds via stepwise dehalogenation involving an intermediate 1-chloro-1-silaallene. Our findings are backed by crystal structure analyses, spectroscopic data, and ab initiocalculations. The completely dehalogenated 1-silaallene provides a silyl group at the silaallene core itself, which should allow further functionalization. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF