Sg. Bott et al., SYNTHESIS AND BASE-PROMOTED INTRAMOLECULAR NUCLEOPHILIC REACTION OF A-ALPHA-HEXAHYDRO-1,4-METHANONAPHTHALENE-5(1H)-ONE, Journal of chemical crystallography, 25(10), 1995, pp. 641-651
Catalytic hydrogenation of two substituted hexahydro-1,4-dimethanonaph
thalene-5,8-diones results in reduction of the enedione carbon-carbon
double bond with concomitant reduction of only one of the two chemical
ly equivalent C = O groups. Reaction of one partially reduced product
with base results in intramolecular addition to the carbon-carbon doub
le bond.