Several 2-substituted tropothiones (2, 4, 6-cycloheptatriene-1-thiones) having an electron- donating group (Me, Ph, NH 2, NHMe, OH, OMe, or SMe) were synthesized by direct sulfurization from the corresponding tropones in a one-pot reaction. In contrast to the instability of the parent tropothione (1a), most of these 2-substituted derivatives were insensitive to air and were thermally stable compounds which can be handled at room ...
