THE FACILE CONVERSION OF A β-LACTAM INTO 2,3-DIHYDRO-1,3-BENZOXA(THIA)ZIN-4-ONES
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
Arnoldi, Anna,Merlini, Lucio,Scaglioni, Leonardo
p. 257 - 260
(2007/10/02)
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