The schemes below give possible
syntheses of the targets. There are of course other variations. The first part
for each compound gives a "retro-synthesis", the "plan" and then the required
forward synthesis with reagents is given. Red arrows try to show carbon-carbon
bond forming reactions, blue arrows are functional group manipulations. The
blue text rationalise the retrosynthetic analysis and information about important
reactions are given in green.
(note that there are several good alternatives for this compound, for example, the bromide and the carbonyl could switch sides, or a Wittig reactions could be used, see below for an example of that)