Production method of epoxide crystal

Details Production method of epoxide crystal Production method of epoxide crystal

C - Chemistry, Metallurgy

07

D

C07D 301/36 (2006.01) C07D 301/32 (2006.01) C07D 303/36 (2006.01)

Patent

CA 2364838

The present invention provides a production method including adding water to a solution of (2R,3S)-3-tert- butoxycarbonylamino-1,2-epoxy-4-phenylbutane ((2R,3S)- epoxide compound) or (2S,3R)-3-tert-butoxycarbonylamino- 1,2-epoxy-4-phenylbutane ((2S,3R)-epoxide compound) in a polar solvent to allow crystallization, whereby to produce crystals of the (2R,3S)-epoxide compound or the (2S,3R)-epoxide compound conveniently in a high yield by an industrial production method without requiring an extremely low temperature. 22

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