作者:Isabelle Parrot、Guilhem Chaubet、Guillaume Cazals、Aurélien Lebrun、Jean Martinez
DOI:10.1055/s-0033-1340622
日期:——
Bis-Boc-activated 2,5-diketopiperazines on reaction with potassium hydroxide or sodium methoxide in dry tetrahydrofuran led to Boc-protected hydantoins through an unprecedented ring contraction. This rearrangement was applied to several monosubstituted 2,5-diketopiperazines with good yields and regioselectivity.