The First Bicyclic System with ?(Si-Si)-? Conjugation. Synthesis of Bicyclo-1,8-diisopropyl-4,4,5,5,11,11,12,12-octamethyl-1,4,5,8,11,12-hexasila-2,6,9,13-tetrayne

Article abstract of DOI:10.1246/cl.1991.545

Treatment of 1,2-diisopropyltetrachlorodisilane with 2 equiv. of di-Grignard reagent of 1,2-diethynyltetramethyldisilane led to a good yield of the bicyclic title compound, which has a UV absorption at 260 nm.