Reactions of 2-(trifluoromethyl)-2-hydroxy-2H-chromenes with thiophenols promoted by Lewis acid

A Lewis acid promoted nucleophilic substitution reaction between 2-(trifluoromethyl)-2-hydroxy-3-ethoxycarbonyl-2H-chromenes 1 and thiophenols affording thiophenyl substituted products, that is, 4-thiophenyl-2-trifluoromethyl-3-ethoxycarbonyl-4H-chromene and 2-thiophenyl-2-trifluoromethyl-3-ethoxyca...

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Veröffentlicht in:	Tetrahedron 2012-09, Vol.68 (38), p.8011-8017
Hauptverfasser:	Li, Xinjin, Zhao, Jingwei, Wang, Zhongwei, Han, Jianwei, Zhao, Jian, Zhu, Shizheng
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry Chromene Exact sciences and technology Heterocyclic compounds Heterocyclic compounds with o, s, se, te hetero atom and condensed derivatives Lewis acid Noncondensed benzenic compounds Nucleophilic substitution Organic chemistry Preparations and properties Substitution reactions Tetrahedrons Thiophenol Trifluoromethyl
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Beschreibung
Zusammenfassung:	A Lewis acid promoted nucleophilic substitution reaction between 2-(trifluoromethyl)-2-hydroxy-3-ethoxycarbonyl-2H-chromenes 1 and thiophenols affording thiophenyl substituted products, that is, 4-thiophenyl-2-trifluoromethyl-3-ethoxycarbonyl-4H-chromene and 2-thiophenyl-2-trifluoromethyl-3-ethoxycarbonyl-2H-chromene. [Display omitted]
ISSN:	0040-4020 1464-5416
DOI:	10.1016/j.tet.2012.06.101