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.
在N-酰化反应条件下,在恶唑烷硫酮和酰基卤之间发现了新的重排,以提供N-取代的2,4-噻唑烷二酮和N-取代的1,3-噻嗪烷-2,4-二酮。这些杂环用于合成手性烯丙基脲和α-甲基-β-氨基酸。