Zn(OTf)2-catalyzed, microwave-promoted synthesis of 2-substituted 5-methyloxazoles from propargylic amides
作者:Alexander Safrygin、Dmitry Dar'in、Alexei Lukin、Anna Bakholdina、Alexander Sapegin、Mikhail Krasavin
DOI:10.1016/j.tetlet.2019.02.011
日期:2019.3
The versatile conversion of propargylic amides to the respective 2-substituted 5-methyloxazoles was efficiently catalyzed by Zn(OTf)2 (5 mol%) under microwave irradiation in toluene. The method was applicable to a wide range of aliphatic, aromatic and heteroaromatic propargylic amides and thus represents a useful method which is complementary to the existing metal-catalyzed protocols, considering the
在甲苯中微波辐射下,Zn(OTf)2(5 mol%)有效地催化炔丙基酰胺向2-取代的5-甲基恶唑的转化。该方法适用于多种脂族,芳族和杂芳族炔丙基酰胺,因此考虑到Zn(OTf)2的可用性,它是一种有用的方法,可作为对现有金属催化方案的补充。