Process for the preparation of (±) 1-3-dioxolanes and the optical resolution thereof
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United States of America Patent
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Jul 12, 2005
Grant Date -
Sep 18, 2003
app pub date -
Jul 18, 2001
filing date -
Jul 28, 2000
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Abstract
(±) 3-(4-Phenyl-1-piperazinyl)-1,2-propanediol cyclic acetals, a process for the optical resolution thereof and their use as intermediates for the preparation of (-;) 3-(4-phenyl-1-piperazinyl)-1,2-propanediol (levodropropizine) and salts thereof are described herein.
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