%0 Journal Article %T THEORETICAL STUDY OF THE MECHANISM OF THIACROWNEFIR FORMATION %A Chirkina, E.A. %K reaction mechanisms, nucleophilic substitution, thiacrown ether, acetylene-allene allylic rearrangement, electron density functional theory, B3LYP %J Modern Technologies and Scientific and Technological Progress %D 2026 %N 2026 %P 1 %I Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»