METHOD FOR PRODUCING 3,4-DISUBSTITUTED PYRROLIDINE DERIVATIVE AND PRODUCTION INTERMEDIATE THEREOF
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United States of America Patent
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Issued Date -
Nov 8, 2012
app pub date -
Jan 7, 2011
filing date -
Jan 8, 2010
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Abandoned
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Abstract
Provided is an inexpensive and industrially advantageous method for preparing (3R,4S)-3-(N-substituted aminomethyl)-4-fluoropyrrolidine or an enantiomer thereof which can be an intermediate for producing pharmaceuticals. It relates to a method for preparing (3R,4S)-3-(N-substituted cyclopropylaminomethyl)-4-fluoropyrrolidine derivative or ait's enantiomer, or their salts, comprising a step of fluorinating a 4-hydroxy-3-(N-substituted aminomethyl)pyrrolidine derivative represented by the general formula (1) or an enantiomer thereof using a sulfur tetrafluoride derivative.
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