Patent ID: 7537933
Filing Date: 2009-05-26
Classification: B01J,C07B,G01N,Y10S,Y10T

Abstract:
1. A method for determining, by means of capillary gas chromatography, the enantiomer ratio of trimethylcyclopentene derivatives of structure (I), wherein Z represents an alkyl residue having 1 to 10 C atoms, which may be saturated or olefinically unsaturated, straight-chain or branched and which is substituted by an OH or CHO group, with a stationary phase being used containing at least one compound selected from the group consisting of heptakis-(2,3-di-O-methyl-6-O-tert-butyldimethylsilyl)-β-cyclodextrin and heptakis-(2,3-di-O-acetyl-6-O-tert-butyldimethylsilyl)-β-cyclodextrin, and at least one polysiloxane, with the mixing ratio of cyclodextrin derivatives and polysiloxanes being set to a value in the range of 10:90 to 50:50.