A two-step, one-pot procedure using acid chlorides and propargyl amines to form tri-substituted oxazoles via gold-catalyzed cyclization
作者:Michelle Tran-Dubé、Sarah Johnson、Indrawan McAlpine
DOI:10.1016/j.tetlet.2012.11.013
日期:2013.1
2,4-Disubstituted-5-methyl oxazoles were prepared from a 2-step, 1-pot procedure using acid chlorides and propargyl amines. These conditions lead to the formation of propargyl amides in situ followed by AuCl3 catalyzed cyclization. We were interested in this novel formation of tri-substituted oxazoles and exploring the scope of the reaction using these mild conditions. A variety of aryl and aliphatic
使用酰基氯和炔丙基胺,通过两步,一锅法制备2,4-二取代的5-甲基恶唑。这些条件导致原位形成炔丙基酰胺,然后AuCl 3催化环化。我们对这种新型的三取代恶唑的形成感兴趣,并探索了在这些温和条件下的反应范围。耐受各种含有敏感官能团的芳基和脂族酰胺,可提供良好的收率。