... CHEMISTRY OF ACETYLENIC ETHERS XLIX Vinylthioethyne and some of its derivatives BY L. BRANDSMA and JF ARENS Groningen, Netherlands Laboratory of Organic Chemistry of the University, Bloemsingel 10, ... Page 2. 238 L. Brandsma and j. F. Avens, These substances are the first representatives of sulphides with the sulphur atom between an olefinic and an acetylenic group. ... Page 3. Chemistry of Acetylenic Ethers. XLIX 80 (1961) RECUEIL 239 GO. ...