Reactions of quadricyclane with sulphur dioxide: formation of a stable β-sultine and catalysed lsomerization to norbornadiene
作者:Ottorino De Lucchi、Vittorio Lucchini
DOI:10.1039/c39820000464
日期:——
Sulphurdioxide, as solvent or in chloroform, catalyses the isomerization of quadricyclane (1) to norbornadiene and cycloadds to (1) to afford exo-3-oxa-4-thiatricyclo [4.2.1.02,5]non-7-ene-4-oxide (3); in the presence of a deficiency of sulphurdioxide,(3) is remarkably stable in solution, but decomposes rapidly as pure product.