31898-73-4Relevant articles and documents
THE FACILE CONVERSION OF A β-LACTAM INTO 2,3-DIHYDRO-1,3-BENZOXA(THIA)ZIN-4-ONES
Arnoldi, Anna,Merlini, Lucio,Scaglioni, Leonardo
, p. 257 - 260 (2007/10/02)
The reaction of 4-acetoxyazetidin-2-one with esters of salicylic acid in the presence of base gives rise to an intramolecular ring transformation to 2,3-dihydro-1,3-benzoxazin-4-one-2-acetic acid and its esters.A similar reaction occurs with benzyl 2-merc