At -20 degrees C, SO2 undergoes homocheletropic addition with 7,7-dimethyl[2.2.1]hericene (18) to give (1R,5S)-6,10-dimethylidene-8-isopropylidene-3-thiatetracyclo[5.2.1.0(1,5 ).0(5,9)]decane 3,3-dioxide (21). This 3,3-dioxide (21). This sulfolane Is isome ...
1995