A remarkable base-induced rearrangement of hydroxy oxazolines to amido tetrahydrofurans
摘要:
Asymmetric beta-hydroxy oxazolines have been shown to rearrange at room temperature to isomeric tetrahydrofurans when deprotonated with potassium hydride in tetrahydrofuran.
The synthesis of chemically and enantiomerically pure (S)-3-amino tetrahydrofuran hydrochloride starting from the natural amino acids, L-aspartic acid or L-methionine is described. The process involves no chromatography and can be easily carried out on a large scale. The enantiopurity of the final product was established by NMR and chiral HPLC methods. (C) 2013 Elsevier Ltd. All rights reserved.
US7514573B2
申请人:——
公开号:US7514573B2
公开(公告)日:2009-04-07
[EN] NOVEL PROCESS FOR THE PREPARATION OF ENANTIOPURE 3- ENANTIOPURE 3-AMINO TETRAHYDROFURAN AND ITS SALTS<br/>[FR] NOUVEAU PROCÉDÉ DE PRÉPARATION D'UN ÉNANTIOPURE 3-ÉNANTIOPURE 3-AMINO TÉTRAHYDROFURANE ET DE SES SELS
申请人:MAJEED MUHAMMED
公开号:WO2020046403A1
公开(公告)日:2020-03-05
Disclosed is simple, novel, scalable and environment friendly process for the preparation of enantiopure 3-amino tetrahydrofuran and its salts.