The reactions of aroylpyruvic acids and their derivatives with o-aminophenyldiphenylmethanol

被引：4
|
作者：
Kolotova, NV [1 ]
Koz'minykh, VO [1 ]
Dolbilkina, EV [1 ]
Koz'minykh, EN [1 ]
机构：
[1] Perm State Pharmaceut Acad, Perm 614051, Russia
来源：
RUSSIAN CHEMICAL BULLETIN | 1998年 / 47卷 / 11期
关键词：
aroylpyruvic acids; methyl aroylpyruvates, 5-arylfuran-2,3-diones, reactions with o-aminophenyldiphenylmethanol; amides of 4-aryl-2-hydroxy-4-oxobut-2-enoic acid; 4,5-dihydrobenzo[e][1,4]oxazepin-3(1H)-ones, 1,1-diphenyl-1H-benzo[d][1,3]oxazines;
D O I：
10.1007/BF02494290
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Aroylpyruvic acids and their methyl esters react with o-aminophenyldiphenylmethanol to form 4-aryl-2-[2-(1-hydroxydiphenylmethyl)phenylamino]-4-oxobut-2-enoic acids and their esters. The alpha-enamino acids obtained undergo intramolecular heterocyclization in the presence of Ac2O to afford substituted 4,5-dihydrobenzo[e] [1,4]oxazepin-3(1H)-ones. The reaction of 5-arylfuran-2,3-diones with o-aminophenyldiphenylmethanol leads to products of decyclization, 2-(1-hydroxydiphenylmethyl)phenylamides of 4-aryl-2-hydroxy-4-oxobut-2-enoic acid, which upon heating in AcOH or Ac2O yield 3-aroylacetyl-1,1-diphenyl-1H-benzo[d][1,3]oxazines.
引用
收藏
页码：2246 / 2248
页数：3
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