Ullmann CO coupling of sterically hindered secondary alcohols using excess amount of strongly coordinating monodentate ligands

Autor: Yoshitaka Kino, Hayato Sugata, Hiromi Uchiro, Tetsu Tsubogo
Rok vydání: 2017
Předmět:
Zdroj: Tetrahedron Letters. 58:1015-1019
ISSN: 0040-4039
Popis: A new effective copper catalyzed C O coupling reaction using excess amount of strongly coordinating monodentate ligands was successfully developed. Among the DMAP-type monodentate ligands, 4-pyrrolidinopyridine afforded the best results. The developed reaction is widely applicable for the synthesis of various hindered or acyclic secondary alkyl-aryl ethers. In this study, a novel and remarkable acceleration of the coupling reaction using excess amount of monodentate ligands was discovered.
Databáze: OpenAIRE