Tetrahedron

Aromatic annulation with naphtho [1, 8-de]-1, 3-dithiin carbocations

SA Gamage, RAJ Smith

Index: Gamage, Swarna A.; Smith, Robin A. J. Tetrahedron, 1990 , vol. 46, # 6 p. 2111 - 2128

Full Text: HTML

Citation Number: 21

Abstract

The title carbocations have been produced by the reaction of silver trifluoromethanesulfonate with mixed orthothioesters. Intramolecular aromatic electrophilic substitution (annulation) of the cationic intermediates proceeds readily and provides an efficient, chemoselective route for appending six-membered rings to nonactivated aromatic systems.