PROCESS FOR THE PREPARATION OF TRANS-3-ALKYLOXY-4-HYDROXYTETRAHYDROFURAN
申请人:EASTMAN CHEMICAL COMPANY
公开号:EP1237884B1
公开(公告)日:2004-09-15
US6140516A
申请人:——
公开号:US6140516A
公开(公告)日:2000-10-31
[EN] PROCESS FOR THE PREPARATION OF TRANS-3-ALKYLOXY-4-HYDROXYTETRAHYDROFURAN<br/>[FR] PROCEDE DE PREPARATION DE TRANS-3-ALKYLOXY-4-HYDROXYTETRAHYDROFURANE
申请人:EASTMAN CHEM CO
公开号:WO2001044222A1
公开(公告)日:2001-06-21
Disclosed is a process for preparIng novel trans-3-alkyloxy-4-hydroxytetrahydrofurans including racemic and substantially enantiomerically pure (3S,4S)-trans-3-alk(en)yloxy-4-hydroxytetrahydrofurans and (3R,4R)-trans-3-alk(en)yloxy-4-acyloxytetrahydrofurans. The disclosed process comprises the steps of reacting 3,4-epoxytetrahydrofuran with an alcohol under Lewis acid catalysis to obtain a racemic trans-3-alk(en)yloxy-4-hydroxytetrahydrofuran; contacting the trans-3-alk(en)yloxy-4hydroxy-tetrahydrofuran with an acyl donor in the presence of a hydrolase enzyme to produce a mixture of a substantially enantiomerically pure (3S,4S)-trans-3-alk(en)yloxy-4-hydroxytetrahydrofuran and a substantially enantiomerically pure (3R,4R)-trans-3-alk(en)yloxy-4-acyloxytetrahydrofuran; and separating the components of the mixture by partitioning between water and a solvent immiscible with water.