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CsF/clinoptilolite was found to be an efficient solid base catalyst for both SNAr and Ullmann ether reactions. A general and efficient one-step procedure was developed for the synthesis of biaryl ethers via direct coupling of electron-deficient aryl halides to phenols using CsF/clinoptilolite. The protocol was also applied to electron-rich aryl halides by addition of a catalytic amount of copper oxide nanoparticles. Both SNAr and Ullmann reactions were rapid and provided good to excellent yields.

CsF/clinoptilolite: an efficient solid base in SNAr and copper-catalyzed Ullmann reactions

CsF/clinoptilolite: an efficient solid base in S_NAr and copper-catalyzed Ullmann reactions