2001 sulfuration, sulfonation, S-alkylation sulfuration, sulfonation, S-alkylation O 0245 04 -064 1-(Alkylthio)-polyfluoroalkynes-1. Part 2. Syntheses of Fluorine-Containing Enamines, Ketenedithioacetals, and Acetylene Sulfoxides from 1-Alkylthio-3,3-difluoropropynes-1. -The title enamines, e.g. (III), are used for the preparation of the title dithioacetals such as (V) and (VII). Starting from the title propyne (X), cycloadducts such as (XII) and (XIV) are available. -(SHERMOLOVICH, YURIJ G.; MUSYANOVYCH, ROSTYSLAV YA.; TIMOSHENKO, VADIM M.; MARKOVSKY, LEONID N.; Heteroat.