An organic superbase, phosphazene P4-(t)Bu, functioned as an active catalyst for intramolecular cyclization of o-alkynylphenyl ethers via carbon-carbon bond formation to provide an efficient synthetic method for 2,3-disubstituted benzofurans derivatives under mild reaction conditions without the need for a metal catalyst.
有机超碱
磷腈P4-(t)Bu用作通过碳-碳键形成邻炔基苯基醚分子内环化的活性催化剂,为2,3-二取代
苯并呋喃衍
生物的温和反应条件提供了一种有效的合成方法,而无需温和的反应条件需要
金属催化剂。