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Optically active 2,3-epoxy-1,1,1-trifluoropropane was converted into the corresponding oxiranyl anion and reacted with electrophiles such as aldehydes, ketones and halides to give the corresponding adducts in moderate to good yields. The whole reaction occurred with retention of configuration at the stereogenic carbon center. In a similar manner, trifluoromethyl stabilizing aziridinyl anions were...
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