Efficient generation of indeno[1,2-c]chromenes via the Pd-catalyzed reaction of 2-alkynylhalobenzenes with 2-alkynylphenols
作者:Yong Luo、Linxiang Hong、Jie Wu
DOI:10.1039/c1cc11169h
日期:——
A palladium-catalyzed reaction of 2-alkynylhalobenzenes with 2-alkynylphenols in the presence of PCy3 is discovered, which provides an efficient and facile route to indeno[1,2-c]chromenes. This reaction works efficiently, leading to the corresponding products in good to excellent yields.
2-Alkynylhalobenzene reacts with 2-alkynylphenol in the presence of a palladium catalyst, leading to indeno[1,2-c]chromenes in good to excellent yields. Furthermore, the scaffold of indeno[1,2-c]chromene could be constructed via a palladium-catalyzed reaction of 2-alkynylbromobenzene with water, in which four bonds are formed with high efficiency.
2-炔基卤代苯在钯催化剂的存在下与2-炔基苯酚反应,生成茚并[1,2- c ]色烯,收率高至优异。此外,脚手架茚并[1,2- c ]色烯可以通过2-炔基溴苯的钯催化与水,其中高效形成四个键。