1,3-Diketones can be disconnected in a similar way: this time the disconnection corresponds to a
Claisen condensation, but it's still 1,3-di0, and again you need to look out for the 1,3 relationship.
The synthons are still d2 plus al but the al synthon is used at the ester oxidation level. This diketone
is the starting material for the synthesis of the antidepressant tazadolene. With 1,3-diketones, there's
always a choice where to disconnect, and you should be guided by which disconnection { 1) corre-
sponds to the most reliable reaction and (2) gzves the simplest starting materials. In this case, it's
much better to disconnect back to cyclohe}anone.