Investigation on the reactivity of α-azidochalcones with carboxylic acids: Formation of α-amido-1,3-diketones and highly substituted 2-(trifluoromethyl)oxazoles
作者:Kandasamy Rajaguru、Arumugam Mariappan、Rajendran Suresh、Periasamy Manivannan、Shanmugam Muthusubramanian
DOI:10.3762/bjoc.11.219
日期:——
microwave irradiation via in situ formation of 2H-azirine intermediates. An interesting reaction is described wherein, with trifluoroacetic acid at lower temperature, it affords highly substituted 2-(trifluoromethyl)oxazoles. These flexible transformations proceed under solvent free conditions in good to excellent yields without any catalyst.
已经研究了α-叠氮hal烷与羧酸的反应,该反应在微波辐射下通过原位形成2H-叠氮中间体形成了α-氨基-1,3-二酮。描述了一种有趣的反应,其中在较低温度下与三氟乙酸反应,可得到高度取代的2-(三氟甲基)恶唑。这些灵活的转化过程在无溶剂条件下以良好至极好的收率进行,没有任何催化剂。