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 ...
