Abstract Conversions of chloroethynyllithium into 1-chloro-2-(ethylthio) ethyne and of ethoxyethynyllithium into 1-ethoxy-2-(ethylthio) ethyne have been effected with the thiolsulphonate C 2 H 5 SSO 2 C 2 H 5 in liquid ammonia. 1-Ethoxy-2-(ethylthio) ethyne is ...