Optical resolution of DL-pantolactone

Details Optical resolution of DL-pantolactone Optical resolution of DL-pantolactone

1976-02-12

1977-08-30

Jaisle, Cecilia M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2605706, C07D30783

Patent

active

040454509

ABSTRACT:
The optical resolution of DL-pantolactone is effected by reacting DL-pantolactone or its alkali salt derived therefrom, respectively, with an optically active N-substituted aminophenylpropanol of the general formula: ##STR1## wherein R.sub.1 is a phenyl group which may be substituted and R.sub.2 is an aralkyl group in which the benzene ring may bear a substituent, or its mineral acid addition salt; separating the resulting diastereomers by the aid of difference in their dissolubility; and decomposing them to give the corresponding optical antipodes. This method can provide the antipodes in high purity and yield and can be carried out with ease.

REFERENCES:
patent: 2460239 (1949-01-01), Pickel et al.
patent: 2460240 (1949-01-01), Pickel et al.

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