The unexpected regio- and stereo-specific Diels–Alder reaction between cyclopentadiene and 2-benzenesulphonyl-3-trimethylsilylbicyclo[2.2.1]hepta-2,5-diene
Abstract
The title reaction exhibits remarkable specificity as only one of the eight possible regio- and stereo-isomers is obtained in 98% yield; the structure of this single adduct is elucidated by chemical degradation.