Synthesis of 2-amino-4H-1,3-oxazines and 2-amino-4H-1,3-thiazines through a Yb(OTf)3-assisted, acid-catalyzed one-pot cyclocondensation reaction

被引：0
|
作者：
Salil Putatunda
Arijit Chakraborty
机构：
[1] Maulana Azad College,Department of Chemistry
来源：
Chemistry of Heterocyclic Compounds | 2015年 / 51卷
关键词：
2-amino-4; -1,3-oxazine; 2-amino-4; -1,3-thiazine; ytterbium triflate; hetero Diels–Alder reaction; multicomponent reaction;
D O I：
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学科分类号：
摘要：
[graphic not available: see fulltext]An efficient synthesis of 2-amino-4,6-diaryl-4H-1,3-oxazine and 2-amino-4,6-diaryl-4H-1,3-thiazine derivatives has been demonstrated through a one-pot multicomponent cyclocondensation reaction. Ytterbium triflate and concentrated HCl has been utilized as the catalyst system for this reaction. The method produced good to excellent product yields and allowed a wide variation of the substituents in both aryl moieties.
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页码：763 / 768
页数：5
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