Process for producing (S)-3-[(1-dimethylamino)ethyl] phenyl-N-ethyl-N-methyl-carbamate via novel intermediates
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United States of America Patent
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Apr 16, 2013
Grant Date -
Jan 26, 2012
app pub date -
Aug 25, 2009
filing date -
Aug 25, 2008
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Abstract
Disclosed herein are novel intermediates and process for large scale production of (S)-3-[(1-dimethylamino)ethyl]phenyl-N-ethyl-N-methyl-carbamate (rivastigmine) or its pharmaceutically acceptable salts employing the novel intermediates. Further provided are methods for producing the novel intermediates thereof.
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