TUNGSTATE-CATALYZED OXIDATION OF TETRAHYDROQUINOLINES WITH HYDROGEN-PEROXIDE - A NOVEL METHOD FOR THE SYNTHESIS OF CYCLIC HYDROXAMIC ACIDS

被引:50
作者
MURAHASHI, SI
ODA, T
SUGAHARA, T
MASUI, Y
机构
[1] Department of Chemistry, Faculty of Engineering Science, Osaka University, Machikaneyama, Toyonaka
关键词
D O I
10.1021/jo00293a014
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The sodium tungstate catalyzed oxidation of 1,2,3,4-tetrahydroquinolines (1) with 30& aqueous hydrogen peroxide solution in methanol gives l-hydroxy-3,4-dihydroquinolin-2(lH)-ones (2), which are important biologically active compounds, in good to excellent yields. The cyclic hydroxamic acid 7 is also obtained in good yield. Since reduction of 2 thus obtained gives 3,4-dihydroquinolin-2(lH)-ones (4), the present reaction provides a convenient method for synthesis of 4 from 1. © 1990, American Chemical Society. All rights reserved.
引用
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页码:1744 / 1749
页数:6
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