(9) 0. W-ichterle, Chem. Zenlr., 348 (1944).(10) In all cases of Cyclization to cyclohexane-1, 3-diones which we have Investigated (see, e. 0. ref. 2), no reasonable yield of desired product could be obtained unless conditions for enolate precipitation were found. Otherwise, reverse Michael reactions. other condensations, etc., occurred, as in the formation of VI and XI. report that 1-methyl-2-acetylcyclohexene-1 has X, 249 mp (6 6890).
