Michael addition of enolates to 0c,p-unsaturated compounds is a good way of making 1,5-difunction-
al}ed compounds, and you should look for these 1,5-relationships in target molecules with a view to
making them in this way. Our example is rogletimide, a sedative that can be disconnected to a I,5-diester.
Further 1,5-diCO disconnection gives a compound we made earlier饰ethylation of the ester enolate.