https://www.thieme.de/en/thieme-chemistry/synform-news-synthesis-of-piperazin-2-ones-174915.htm
Synthesis of Piperazin-2-ones - Thieme Chemistry - Georg Thieme Verlag
M. Petkovic and V. Savic show a metal-promoted cascade approach to synthesize piperazin-2-ones.
thieme chemistrysynthesispiperazin2ones