for the following products
2-Boc-Thio-4,6-dimethylpyrimidine | O-tert-Butyl S-(4,6-dimethylpyrimidin-2-yl) carbonothioate | S-Boc-2-Mercapto-4,6-dimethylpyrimidine | tert-Butyl S-(4,6-dimethylpyrimidin-2-yl) thiolcarbonate and 2-(tert-Butyloxycarbonylsulfanyl)-4,6-dimethyl-pyrimidine
