作者:Jinqiang Kuang、Shengming Ma
DOI:10.1021/jo802391x
日期:2009.2.20
We have developed a modified method for the synthesis of terminal allenes from terminal 1-alkyne: The reaction of 1-alkynes with 1.8 equiv of Cy2NH and 2.5 equiv of paraformaldehyde mediated by CuI (0.5 equiv) in refluxing dioxane may produce terminal allenes in much higher yields than the previously reported protocol and many functional groups such as mesylate, hydroxyl group, ether, amide, etc. may
我们已经开发出一种从末端1-炔烃合成末端烯基的改良方法:在回流的二恶烷中,由CuI(0.5当量)介导的1-炔烃与1.8当量的Cy 2 NH和2.5当量的多聚甲醛的反应可能产生末端烯基与以前报道的方案相比,其收率要高得多,并且可以容忍许多官能团,例如甲磺酸酯,羟基,醚,酰胺等。