and di-ethyleneketals of bornane-2,3-dione have been utilised for selective reactions in this molecule, including a new route to epicamphor. The alkylation of camphor with sodium and methyl iodide gave both C- and O-alkylation. A discepancy in the literature concerning the synthesis of homocamphor and homoepicamphor is rectified. The reaction of 9-bromobornan-2-one with zinc and acetic aicd-d1 gave