Ti-catalyzed reactions of 4,4′-bis(trimethylsilyi)bicyclohexyl-2,2′-diene with various electrophiles

Reductive disilylation (Li + Me3SiCl - THF) of 1,3-cyclohexadiene led to 4,4'-bis(trimethylsilyl)bicyclohexyl-2,2'-diene (1). In the presence of TiCl4 in dichloromethane, 1 reacted with some acyl chlorides, anhydrides, and aldehydes to give tricyclo[7.4.0.0(3,8)]trideca-4,12-diene-2-yl derivatives. (c) 2008 Published by Elsevier Ltd.