Formation of 3??Sulfanylcoumarins by SnPh3OH??Promoted Cyclization of 3??Aryl??2??Sulfanylpropenoic Acids

…, V Fernández??Moreira, E Freijanes…

Index: Alvarez-Boo, Pedro; Casas, Jose S.; Couce, Maria D.; Fernandez-Moreira, Vanesa; Freijanes, Eduardo; Garcia-Martinez, Emilia; Sordo, Jose; Vazquez-Lopez, Ezequiel European Journal of Inorganic Chemistry, 2005 , # 21 p. 4425 - 4429

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Citation Number: 8

Abstract

Abstract Reaction of SnPh 3 OH with 3-(2-hydroxyphenyl) sulfanylpropenoic acid [H 2 (o- hpspa)] yielded [SnPh 3 (SC)], where SC is deprotonated 3-sulfanylcoumarin (3-sulfanyl-2H- 1-benzopyran-2-one, HSC), by a cyclization process. Similarly, when 3-(2-hydroxy-5- bromophenyl)-and 3-(2-hydroxy-3, 5-dibromophenyl)-2-sulfanylpropenoic acids were treated with the same tin hydroxide, the cyclization resulted in [SnPh 3 (BrSC)] and [SnPh ...