Aryl-substituted 4H-thiopyrans readily undergo catalytic and ionic hydrogenation [1]. Their seleno analogs readily eliminate elemental selenium in attempts to perform catalytic and other traditional methods of hydrogenation [2]. Aryl-substituted selenacyclohexanes were obtained and characterized upon the disproportionation of 4H-selenopyrans under acid catalysis conditions [3]. We are the first to report the ionic hydrogenation of 2, 4, 6-triaryl- ...
