Abstract
1-8-Diazabicyclo[5.4.0]undec-7-ene(DBU)‐catalyzed Michael addition of nitroalkanes to dicyclopentadienone (1) followed by flash vacuum pyrolysis (FVP) provided a high‐yielding synthesis of extremely pure 4‐nitroalkyl cyclopentenones (3). The optimized Nef reaction of the nitro adducts (2) provided 4‐ketoalkyl cyclopentenones (5) in the similar way.
Acknowledgment
Financial assistance for this work from the Department of Science and Technology (DST) and the Council of Scientific and Industrial Research (CSIR), New Delhi, is gratefully acknowledged.