Crystal structure of 1,3-diallyl-1,3,3a,4,7,7a-hexa­hydro-4,7-methano-2-benzo­thio­phene 2,2-dioxide

The title compound C₁₅H₂₀O₂S, was identified as a product of di­allyl­ation of the meso-isomer of the corresponding norbornene sulfone, and it is an achiral compound. The five-membered heterocycle adopts an envelope conformation with the S atom deviating by 0.795 (3) Å from the other atoms of the ring (r.m.s. deviation = 0.0131). Both allyl groups are anti-oriented relative to the S atom but their double bonds are directed in opposite directions relative to the plane of the heterocycle.