Reactions of Phosphonium Ylides with S8 or Se in the Presence of Amines. Formation of Thioaldehydes or Selenoaldehydes

Abstract

Abstract The reaction of phosphonium ylides with elemental sulfur gave thioaldehydes which were successfully changed to corresponding thioamides when treated with secondary amines. On the other hand, the reaction of selenoaldehydes with secondary amines afforded bis(dialkylamino)methanes in good yields.