Synthesis of 2-substituted ž-bromo-4-H-benzo /D/-1,3-thiazines by the reaction of 2-bromomethyl-4- bromophenyl isothiocyanate with N-and O-nucleophiles /Syntéza 2-substituovaných 6-bróm-4-H- benzo /d/-1,3-tiazínov pomocou reakcie 2-brómmetyl-4-brómfenyl izotiokyanátov s