A novel reaction has been found between oxazolidinethione and bromoacetyl bromide to afford N-substituted 2,4-thiazolidinediones through an intramolecular nucleophilic substitution reaction. Interestingly a step of elimination was carried out in trisubstituted oxazolidinethiones forming a double bond. (c) 2005 Elsevier Ltd. All rights reserved.
Rearrangement of 5-phenylthiazolidine-2,4-diones to chiral α-ketoamides via α-elimination
Rearrangement of oxazolidinethiones to thiazolidinediones or thiazinanediones and their application for the synthesis of chiral allylic ureas and α-methyl-β-amino acids
作者:Rocio Sabala、Jacqueline Hernández、Vladimir Carranza、Rosa L. Meza-León、Sylvain Bernès、Estibaliz Sansinenea、Aurelio Ortiz
DOI:10.1016/j.tet.2009.11.035
日期:2010.1
A novel rearrangement has been found between oxazolidinethiones and acyl halides under N-acylation reaction conditions to afford N-substituted 2,4-thiazolidinediones and N-substituted 1,3-thiazinane-2,4-diones. These heterocycles were used for the synthesis of chiral allylic ureas and α-methyl-β-amino acids.