Synthesis of new potential UV-filters

Three new silylated 2-(2´-hydroxyphenyl)benzotriazole derivatives were prepared. Starting with the easily available simple 2-(2´-hydroxyphenyl)benzotriazole, the target compounds were synthesized by a stepwise synthetic protocol, namely alkylation, thermal rearrangement and silylation

Rearrangement Reactions for the Synthesis of Some Oxa- and Aza-tricyclic Rings Heterocyclic Compounds

This review article describes the main results of our research during the last 5-6 years. A series of new rearrangement reactions was discovered and used for the synthesis of novel heterocyclic compounds: furo[2,3-f]isoquinolines, furo[3,2 -f]quinolines, benzo[c]xanthene, benzo[h]chromene, benzo[a]xanthene,  benzo[f]chromene, furo[2,3-f]isoquinoline, spirofuro[3,2-f]quinoline,  cycloalkanoindoles, and benzotriazines