Beckmann Rearrangement Using Indium(III) Chloride: Synthesis of Substituted Oxazoloquinolines from the Corresponding Ketoximes of 3-Acyl-1<i>H</i>-quinolin-4-ones
作者:Chwang Pak、Kwang Yoo、Eun Choi、Hyeon Lee、Guy Yeon、Hee Yang
DOI:10.1055/s-2006-926463
日期:2006.5
Nitrilium ion intermediates in the Beckmann rearrangement of 3-acyl-4-quinolinone ketoximes, in the presence of InCl 3 , were trapped by the β-hydroxy group of the tautomeric form of the ketoxime giving, predominantly, the corresponding oxazoloquinolines with isooxazoloquinolines formed as minor products.