was obtained in improved yield (54%)) along with the bicyclic ketone 3. In addition, gas chromatography and infrared analysis showed the presence of a small amount of chloromethyl ketone 2. A solid was also isolated of rnp 88.5-90.5, whose infrared spectrum closely resembled that of the liquid tetrahydro isomer Sa, previously obtained by neutral hydrogenation. The nmr spectrum, as ell as the analysis, makes it clear that this is also a 2 ...
