Triflic Anhydride-Mediated Beckmann Rearrangement Reaction of Β-Oximyl Amides: Access to 5-Iminooxazolines
MANGFEI YU QIAN ZHANG JIA WANG PENG HUANG PENGFEI YAN RUI ZHANG DEWEN DONG
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Facile and efficient synthesis of 5-iminooxazolines fromΑ, Α-disubstituted Β-oximyl amidesmediated by triflic anhydride $(Tf_{2}O)$ in the presence of 1,8-diazabicyclo(5.4.0)undec-7-ene (DBU) indichloromethane at room temperature is developed, and a mechanism involving tandem Beckmann rearrangementand intramolecular cyclization reaction is proposed.
MANGFEI YU1 QIAN ZHANG2 JIA WANG2 PENG HUANG2 PENGFEI YAN1 RUI ZHANG2 DEWEN DONG2
Volume 135, 2023
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