Brown oxidation of cis-bicyclo [3. l. 0] hexan-3-ol afforded bicyclo [3. l. 0] hexan-3-one in 98% yield. Treatment of this ketone with either phenyllithium or phenylmagnesium bromide in ether at room temperature followed by solvolysis of the resulting alcohol in a mixture of trifluoroacetic acid, sodium azide, and chloroform gave a mixture of cis-and trans-3-azido-3- phenylbicyclo [3. l. 0] hexanes. LAH reduction of this crude mixture of azides afforded a 1: ...