R-(3,3'-dibromo-1,1'-dinaphthyl)-20-crown-6 used as chiral stationary phase of open tubular column in gas chromatography
The R-(3,3'-dibromo-l,1'-dinaphthyl)-20-crown-6 was synthesized by R-binaphthol as raw material,and its structure was characterized by nuclear magnetic resonance and thermogravimetric analysis.The capillary chiral column of R-(3,3'-dibromo-l,1'-dinaphthyl)-20-crown-6 was prepared with polysiloxane OV-1701 by static coated method for gas chromatographic separation,and the stationary phase coating performance of inner surface of open tubular column was investigated by scanning electron microscopy.When some racemates,n-paraffin mixtures,n-alcohol mixtures,aromatic hydrocarbon mixtures,and positional isomers were selected as test samples.A good separation performance on the column have been obtained.
crown etherchiral stationary phasecapillary gas chromatographychiral separation
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