Intramolecular [2π+ 2π] photocycloaddition of Group 14 organometallic compounds bearing a styrene chromophore: a route to sila- and germa-cyclophanes and spiro compounds
Abstract
Irradiation of bis- and tetrakis-(4-vinylbenzyl)silanes and their germane analogue caused efficient intramolecular [2π+ 2π] cycloaddition, to give [2.3]sila- and germa-cyclophanes and also sila- and germa-spiro compounds.