Pregled bibliografske jedinice broj: 210232
Diastereoisomerization and X-ray Crystall Structure of Meso-di-(2H-Chromene-2-yl)Ether
Diastereoisomerization and X-ray Crystall Structure of Meso-di-(2H-Chromene-2-yl)Ether // Croatica chemica acta, 68 (1995), 233-240 (međunarodna recenzija, članak, znanstveni)
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Naslov
Diastereoisomerization and X-ray Crystall Structure
of Meso-di-(2H-Chromene-2-yl)Ether
Autori
Lončar, Linda ; Mintas, Mladen ; Hergold-Brundić, Antonija ; Nagl, Ante ; Trötsch, T ; Mannschreck, Albrecht
Izvornik
Croatica chemica acta (0011-1643) 68
(1995);
233-240
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
meso-di-(2H-chromene-2-yl)ether ; diastereoisomerization ; X-ray crystall structure ; separation of stereoisomers ; liquid chromatography on triacetylcellulose
Sažetak
It was shown by X-ray crystall structure analysis that di-(2H-chromene-2-yl)ether (1) exists in the meso-form, i.e. as (2S, 2R)-1. The X-ray structural data indicate, also, that geomtries of the two 2H-1-benzopyran parts, of which the skeleton of 1 consists, are not identical, that is the molecule is pseudosymmetrical. The meso-1 undergoes thermaly induced electrocyclic ring opening and reclosure. Thus, meso-1 equilibriates with enantiomers (2S, 2’ S)-1 and (2R, 2’ R)-1, as confirmed by their 1H NMR spectra after preparative separation of stereoisomers using liquid chromatography on triacetylcellulose.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Ustanove:
Prirodoslovno-matematički fakultet, Zagreb,
Fakultet kemijskog inženjerstva i tehnologije, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
