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Chiral Chromenes: Synthesis, Separation of Enantiomers and Barriers to Racemization (CROSBI ID 113933)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Lončar, Linda ; Otočan, Klaudio ; Mintas, Mladen ; Trotsch, Thomas ; Mannschreck, Albrecht Chiral Chromenes: Synthesis, Separation of Enantiomers and Barriers to Racemization // Croatica chemica acta, 66 (1993), 1; 209-216-x

Podaci o odgovornosti

Lončar, Linda ; Otočan, Klaudio ; Mintas, Mladen ; Trotsch, Thomas ; Mannschreck, Albrecht

engleski

Chiral Chromenes: Synthesis, Separation of Enantiomers and Barriers to Racemization

2H-chromenes 3 and 4 have been synthesized by reduction of the appropriate lactone with diisobutylaluminium hydride and subsequent O-alkylation of the resulting lactols. Separations or enrichments of enantiomers were achieved by liquid chromatography on triacetylcellulose and tribenzoylcellulose, (+)-3 and (-)-3 being separated almost completely, while an enrichment of the enantiomers of 4 was achieved by using the recycling procedure. The barriers for the interconversion of enantiomers of 3 and 4 were determined by thermal racemization of enantiomers.

2H-chromenes; enantiomers; separation; barriers to racemization

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Podaci o izdanju

66 (1)

1993.

209-216-x

objavljeno

0011-1643

Povezanost rada

Kemija