Boron Photochemistry
| Autor: | Jack L R Williams, M.E. Glogowski |
|---|---|
| Rok vydání: | 1981 |
| Předmět: |
Quenching (fluorescence)
Inorganic chemistry Organic Chemistry Substituent chemistry.chemical_element Iodine Photochemistry Resonance (chemistry) Biochemistry Inorganic Chemistry chemistry.chemical_compound chemistry Hammett equation Group (periodic table) Ionization Materials Chemistry Physical and Theoretical Chemistry Taft equation Constant (mathematics) Boron Methyl group |
| Zdroj: | Journal of Organometallic Chemistry. 218:137-146 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/s0022-328x(00)86094-5 |
| Popis: | The ratio of methyl group rearrangement to methyl group elimination during the photocyclization of anilinodimesitylborane is dependent upon the concentration of iodine present. At iodine concentrations of less than 10 −3 M , the major product is a demethylated borazarophenanthrene, 7,9-dimethyl-6-mesityldibenz[ ce ][1,2]-azaborine (IV). At concentrations of iodine above 5 × 10 −3 M , the major products is a methyl-rearranged borazarophenanthrene, 7,9,10-trimethyl-6mesityldibenz[ ce ][1,2]-azaborine (V). The role of iodine was at least threefold: assisting in the production of a reactive cation-radical at low iodine concentrations, quenching the formation of the cation-radical at higher iodine concentrations, and actively assisting at the higher concentrations in the formation of a reactive species. |
| Databáze: | OpenAIRE |
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