A stable adduct of sodium ethanethiolate attack at the C-7 ring carbon of 2-ethylthiotropone: stabilisation of a base adduct to an unsubstituted cycloheptatrienone ring carbon by bivalent sulphur

Abstract

A stable base adduct to an unsubstituted cycloheptatrienone ring carbon (C-7) is unexpectedly obtained on the mixing of 2-thioethoxytropone with sodium ethanethiolate whilst the gem-di(ethylthio) adduct cannot be present in more than trace amounts.