LiAlH4reduction of 2-(isopropylsulfonyl)-bicyclo[2.2.1]hept-5-ene-2-carbonitrile 1 gave the reduced product 2 resulting from the first reported LiAlH4 induced α-sulfonitriledecyanation. Experiments using LiAlD4 suggest the involvement of a radicalintermediate. Using a radical-probe, the spiranic compound 6 characteristic of a radicalintermediate has been detected. Electrochemical measurements do