Synthetic routes to precursors of tricyclic camphor derivatives fused at the 2,10-positions, the corresponding halohydrins and dimethyl acetal, are discussed.
Reactions were studied of (-)-(1S,4R)-1-vinyl-7,7-dimethylbicyclo[2.2.1]heptan-2-one with ethyl acetate lithium derivative, potassium acetylide, ozone, with a system OsO4-N-methylmorpholine N-oxide, and some subsequent transformations of the products obtained.