An efficient Cu(I)-catalyzed oxidative cyclization of alkynyl-tethered enynamides for the construction of fused bicyclic cyclopentadiene derivatives is disclosed. The cascade proceeds through alkyne oxidation, carbene/alkyne metathesis, and formal (3 + 2) cycloaddition. Employing aryl-tethered enynamides as starting materials, substituted 2-aminofurans can be exclusively formed.
公开了一种用于组装稠合的双环
环戊二烯衍
生物的,有效的Cu(I)催化的炔基连接的烯酰胺的氧化环化反应。级联通过
炔烃氧化,卡宾/
炔烃复分解和正式的(3 + 2)环加成反应进行。使用芳基系链的乙酰胺作为起始原料,可以专门形成取代的2-
氨基
呋喃。