Highly selective synthesis of tetra-substituted furans and cyclopropenes: copper(i)-catalyzed formal cycloadditions of internal aryl alkynes and diazoacetates
作者:Andrew K. Swenson、Kate E. Higgins、Matthew G. Brewer、William W. Brennessel、Michael G. Coleman
DOI:10.1039/c2ob26295a
日期:——
A convenient Cu(I)-catalyzed cycloaddition of electron rich internal aryl alkynes and diazoacetates was discovered for the chemoselective and regioselective synthesis of tetra-substituted furans and cyclopropenes in moderate isolated yields (18–67%), and alkyne conversion (29–73%).
发现了一种方便的铜(I)催化的富电子内部芳基炔烃和重氮乙酸酯的环加成反应,以中等分离率(18-67%)和炔烃转化率(29-73)进行四取代呋喃和环丙烯的化学选择性和区域选择性合成。 %)。