Add to ORKGThe purpose of this research was to prepare and study the tetramercoptotetramethylmethane or tetrathiopentaerythritol (I) and the corresponding tetramethylmethanetetrasulphon acid (II). The reaction of tetrabromotetramethylmethane with potassium hydrosulphide in alcoholic solution does not yield tetramercaptotetramethylmethane, but gives a spirocyclic compound 2,6-dithia-4-spirohepta. Zie: Summar