Search academic texts

Information × Registration Number 0203U000560, 0102U002080 , R & D reports Title Search for new photo- and radiochromic materials based on biocyclic aziridine derivatives and related compounds popup.stage_title Head Desenko Sergey Mikhailovich, Registration Date 18-02-2003 Organization Institute for Single Crystals, Scientific and Technology Association <Institute for Single Crystals> National Academy of Science popup.description2 Photochemical transformations of 1,2-diphenyl-1,1a-dihydroazireno[1,2]quihoxaline in different phase states are investigated by means of electron spectroscopy. Reversible photochromic processes are revealed in the solutions and in the polymer matrix; two-stage character of photochromic transition is disclosed. Found is a new reaction of heterocyclization of ketones, i.e. condensation with ammonia and carbonyl compounds which leads to tetrahydropyrimidine. Proposed is a number of synthetic approaches to the derivatives of 3,7-dihydro-2H-1,2,4-triazolo[1',5'-a']pyrimido[4,5-d]benzo[b] pyran. Their ability for photochemical regrouping into o-hydroxyaryl substitutes of triazolo[1',5'-a']pyrimidine.56355635 Product Description popup.authors popup.nrat_date 2020-04-02 Close