Beckmann rearrangements in bicyclo[2.2.1]heptan-2-one oximes

Although Beckmann rearrangement of norcamphor oxime 1 was unsatisfactory, proceeding in poor yield to give a mixture of lactam products, rearrangement of the E/Z oxime 9, or the pure E-isomer 10, upon treatment with methanesulfonyl chloride and triethylamine, gave the lactam 12 in good yield.