One aspect of the present invention relates to novel reaction conditions that allow the efficient synthesis of diaryl ethers from arenes bearing a leaving group and arenols under relatively mild conditions. Another aspect of the present invention relates to the dramatic effects of acidic activators on Ullmann-type couplings involving electron-poor and/or relatively insoluble substrates.
[EN] PREPARATION OF DIARYL ETHER BY CONDENSATION REACTIONS<br/>[FR] PREPARATION DE DIARYL ETHERS PAR REACTIONS DE CONDENSATION
申请人:MASSACHUSETTS INSTITUTE OF TECHNOLOGY
公开号:WO1999018057A1
公开(公告)日:1999-04-15
(EN) One aspect of the present invention relates to novel reaction conditions that allow the efficient synthesis of diaryl ethers from arenes bearing a leaving group and arenols under relatively mild conditions. Another aspect of the present invention relates to the dramatic effects of acidic activators on Ullmann-type couplings involving electron-poor and/or relatively insoluble substrates.(FR) Un aspect de la présente invention concerne de nouvelles conditions de réaction permettant une synthèse efficace de diaryl éthers à partir d'arènes portant un groupe labile et d'arénols dans des conditions relativement modérées. Un autre aspect de la présente invention concerne les effets dramatiques des activateurs acides sur les couplages de type Ullmann impliquant des substrats pauvres en électrons et/ou relativement insolubles.
A General Copper-Catalyzed Synthesis of Diaryl Ethers
作者:Jean-François Marcoux、Sven Doye、Stephen L. Buchwald