Photolysis of 2,3:5,6-dibenzo-7,7,8,8-tetraisopropyl-7,8-disilabicyclo-[2.2.2]octa-2,5-diene: evidence for [2 + 2]cyclodimerization of a disilene
Abstract
Evidence for disilene dimerization was obtained by generating tetraisopropyldisilene from the title compound via the photochemical retrodiene process which produced the expected dimerization product, octaisopropylcyclotetrasilane (30%), in addition to the H-abstraction product, 1,1,2,2-tetraisopropyldisilane (5%).