Development of β,β-Dibrominated Secondary Enamides and Their Application to the Synthesis of 5-Br Oxazoles
作者:Jun Ma、Qijie Zou、Chunhua Wang、Guangwei Yin、Fangyi Li
DOI:10.1021/acs.joc.2c01927
日期:2022.11.18
Herein, we report a base promoted dibromination of enamides using CBr4 as a bromine source to provide expedient access to β,β-dibrominated secondary enamides. Preliminary synthetic application study shows that these novel products can be readily transformed to 5-Br oxazoles via Cu(I) catalyzed intramolecular cyclization in good yields.
在此,我们报告了一种碱促进烯酰胺的二溴化,使用 CBr 4作为溴源,以提供对 β,β-二溴化二级烯酰胺的便捷途径。初步合成应用研究表明,这些新产品可以很容易地通过 Cu(I) 催化的分子内环化以良好的收率转化为 5-Br 恶唑。