Optical resolution of sulfone derivatives

Details Optical resolution of sulfone derivatives Optical resolution of sulfone derivatives

C - Chemistry, Metallurgy

07

D

260/313

C07D 249/08 (2006.01) C07D 521/00 (2006.01)

Patent

CA 2019832

- 34 - ABSTRACT OPTICAL RESOLUTION OF SULFONE DERIVATIVES A method for optical resolution of sulfone derivatives, which comprises reacting a mixture of the d- and 1-isomers of a sulfone derivative of the formula: Image (I) wherein X1 and X2 are each a hydrogen atom or a halogen atom with optically active 10-camphorsulfonic acid to make a mixture of two kinds of diastereomer salts between them, isolating one of the diastereomer salts from said dia- stereomer salt mixture on the difference of the diastereomer salts in solubility and decomposing the isolated dia- stereomer salt.

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