Helicity discrimination in N,N'-dibenzoyl-1,2,3,4,7,8,9,10-octahydro-1,10-phenanthrolines and their thiono- and selenocarbonyl analogues by inclusion complexation with chiral diols
Abstrakt
X-ray crystallographic analysis of the title compounds revealed that they assume a folded helical con- formation of an approximate C2 symmetry in the solid state. Dithioamide, diselenoamide and monoselenoamide were resolved to enantiomers by inclusion crystallization with optically active diols (TADDOLs). The absolute configuration of the guest molecules in the complexes was assigned as P. The optical activity of the resolved compounds is manifested by their CD spectra showing relatively strong Cotton effects in the region of thionoamide and selenoamide n-pi* transition. The optically active thiono- and selenoamides are configurationally labile compounds and gradually racemize in solution but they are stable in the form of the inclusion complexes. The first-order kinetics of the racemization in solution allowed us to assign the racemization barriers by the spectropolarimetric measurements
Autorzy (4)
Cytuj jako
Pełna treść
pełna treść publikacji nie jest dostępna w portalu
Słowa kluczowe
Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuł w czasopiśmie wyróżnionym w JCR
- Opublikowano w:
-
ORGANIC & BIOMOLECULAR CHEMISTRY
nr 11,
wydanie 43,
strony 7522 - 7529,
ISSN: 1477-0520 - Język:
- angielski
- Rok wydania:
- 2013
- Opis bibliograficzny:
- Olszewska T., Sikorski A., Herman A., Połoński T.: Helicity discrimination in N,N'-dibenzoyl-1,2,3,4,7,8,9,10-octahydro-1,10-phenanthrolines and their thiono- and selenocarbonyl analogues by inclusion complexation with chiral diols// ORGANIC & BIOMOLECULAR CHEMISTRY. -Vol. 11, iss. 43 (2013), s.7522-7529
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 109 razy
Publikacje, które mogą cię zainteresować
Improvement of opipramol base solubility by complexation with β-cyclodextrin
- K. Majewska,
- A. Skwierawska,
- B. Kamińska
- + 1 autorów