Y. Park, Stephen Q. Zhou, Dong‐Xia Zhao
Oct 1, 1990
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0
Influential Citations
6
Citations
Journal
Organometallics
Abstract
Unsymmetrical 2,3-dimethyl-5-silaspiro[4.4]nona-2,7-diene (I) has been prepared by a dissolving-metal reaction between 1,1-dichloro-1-silacyclopent-3-ene (III) and 2,3-dimethyl-1,3-butadiene. Ring-opening reactions of I catalyzed by alkyllithium reagents and hexamethylphosphoramide (HMPA) have been explored. High yields of the dimer 2,3,12,13-tetramethyl-5,10-disiladispiro[4.4.4.4]octadeca-2,7,12,16-tetraene (II) are formed in these reactions. The structure of II has been determined by X-ray crystallography