Reported here is the direct synthesis of naphthofurans and benzofurans from readily available phenols and α-haloketones promoted by titanium tetrachloride which combines Friedel–Crafts-like alkylation and intramolecular cyclodehydration into one step. This simple protocol allows for the formation of a variety of high value naphthofurans and benzofurans within which a series of cyclic and acyclic groups
本文报道了由
四氯化钛促进的易得的
苯酚和 α-卤代酮直接合成
萘并
呋喃和
苯并呋喃,该过程将类似 Friedel-Crafts 的烷基化和分子内环脱
水合二为一。这个简单的协议允许形成各种高价值的
萘并
呋喃和
苯并呋喃,其中很容易加入一系列环状和非环状基团。该过程展示了高
水平区域选择性、广泛的底物范围和中等至优异的产率的优势。