preparation at the end of the 19th century they have been widely used as fragrances and as
starting materials or building blocks in the synthesis of many relevant products. The
regioselective and/or enantioselective preparation of ionones has therefore been
investigated with growing interest over the last decades. In this Microreview, we summarize
the syntheses of optically active α‐and γ‐ionones (1, 3) and the epoxy and dihydro ionones …