Screening of ligands for the Ullmann synthesis of electron-rich diaryl ethers.

ABSTRACT: In the search for new ligands for the Ullmann diaryl ether synthesis, permitting the coupling of electron-rich aryl bromides at relatively low temperatures, 56 structurally diverse multidentate ligands were screened in a model system that uses copper iodide in acetonitrile with potassium phosphate as the base. The ligands differed largely in their performance, but no privileged structural class could be identified.

SUBMITTER: Otto N 

PROVIDER: S-EPMC3458727 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature