A short and efficient synthesis of bicyclo[2.2.2]octane-1,4-dicarboxylic acid involving
the formation of a semicarbazone is developed, and a reproducible protocol for the
reduction of this semicarbazone is described. The use of microwaves significantly
shortens the duration of the sequence to the diacid compared to the previously described
synthetic method. In addition, by shifting from the use of large amounts of Raney
nickel to a solid-phase process, both the safety and cost are improved notably.
Key words
bicyclo[2.2.2]octane-1,4-dicarboxylic acid - safe - semicarbazone - microwave irradiation
- rigid backbone - solid-phase