METHOD OF OBTAINING [(3R-ENDO]- AND [(3S)-EXO]-1R,4S-2,2-DIMETHYLBICYCLO [2,2,1 ]HEPTAN-3-YL-METHANOLS Russian patent published in 2009 - IPC C07C31/137 C07C29/54 

Abstract RU 2368596 C2

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining optically active alcohols [(3R)-endo]- and [(3S)-exo]-1R,4S-2,2-dimethylcyclo[2.2.1]heptan-3-yl-methanols with general formula (1): [(3R)-endo] (1a) [(3S)-exo] (1b), which are used for obtaining enantiomerically pure products with high optical output. The method involves reacting camphene with a hydride bimetallic complex in form of a Zr,Al-hydride complex µ,µ-dihydro-bis[hydro-µ, chloro-diethylaluminium(bis-cyclopenta-dienylzirconium (IV))], at molar ratio camphene: [Cp2ZrH2*ClAlEt2]2:=2:1, in a benzole medium at 20°C, in an argon atmosphere for 2 hours, subsequent transmetalation of the organozirconium compound with ClAlEt2, oxidation of the reaction mass with dry oxygen and HCl decomposition.

EFFECT: method allows for stereoselective obtaining desired products under mild conditions.

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RU 2 368 596 C2

Authors

Parfenova Ljudmila Vjacheslavovna

Vil'Danova Rushana Floridovna

Pechatkina Svetlana Vital'Evna

Gabdrakhmanov Vener Zabirovich

Berestova Tat'Jana Vjacheslavovna

Khalilov Leonard Mukhibovich

Dzhemilev Usein Memetovich

Dates

2009-09-27Published

2007-08-22Filed