Pregled bibliografske jedinice broj: 210159
Regiospecific Synthesis and Structural Study of some Trifluoromethyl Substituted Dibenzosemibullvelenes
Regiospecific Synthesis and Structural Study of some Trifluoromethyl Substituted Dibenzosemibullvelenes // Monatshefte für Chemie, 123 (1992), 1193-1205 (međunarodna recenzija, članak, znanstveni)
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Naslov
Regiospecific Synthesis and Structural Study of some Trifluoromethyl Substituted Dibenzosemibullvelenes
Autori
Otočan, Klaudio ; Mintas, Mladen ; Kastner, Fritz ; Mannschreck, Albrecht ; Golen, James A. ; Williard, Paul G.
Izvornik
Monatshefte für Chemie (0026-9247) 123
(1992);
1193-1205
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
dibenzobarrelene; dibenzosemibullvalene; enantioselective chromatography; trifluoromethylation; photochemical rearrangement; x-ray crystal structures
Sažetak
Preparation of the regiospecifically trifluoromethyl substituted dibenzosemibullvalenes 3 and 5 is described. An unequivocal proof of chirality of 3 and 5 was obtained by enrichment of their enantiomers using liquid chromatography on triacetyl- or tribenzoylcellulose. The stereostructure of compounds 3 to 5 was prooved by their 1H NMR spectra and confirmed by x-ray crystallographyc analysis. The geometrical data from x-ray structural analysis showed that five-membered rings involved in skeleton of 3 and 5 adopt flattened envelope conformations. These results indicate also a significant substituent-induced bond length asymmetry in the cyclopropane ring of 3 and 5.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Ustanove:
Fakultet kemijskog inženjerstva i tehnologije, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- SCI-EXP, SSCI i/ili A&HCI
