Abstract

Tricyclo[4.1.0.02,7]heptane reacted with 1-(arenesulfonyl)-2-phenyldiazenes by radical mechanism to give bicyclo[3.1.1]heptane derivatives. Unlike analogous reactions with alkenes, the addition of diazenes occurs readily without a catalyst and yields mainly arylazosulfonation products at the C1–C7 bond of tricyclo-[4.1.0.02,7]heptane. The addition products are capable of undergoing thermal prototropic isomerization to 7-endo-(arenesulfonyl)bicyclo[3.1.1]heptan-6-one phenylhydrazones.

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