Supported phase-transfer catalysts as selective agents in biphenyl synthesis from haloaryls

Sudip Mukhopadhyay, Gadi Rothenberg, Nida Qafisheh, Yoel Sasson*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

Abstract

Coupling of substituted halobenzenes to the respective biphenyls is effected with high selectivity in toluene, using a combination of a reducing agent and a weak base in the presence of catalytic tetrabutylammonium bromide (TBAB) and palladium that are both supported on carbon. The maximum selectivity to biphenyl was achieved when Pd, Na2CO3, and TBAB were all supported together on activated carbon. The results are explained with postulation of a physical micro-membrane formed in situ by the phase-transfer catalyst.

Original languageEnglish
Pages (from-to)6117-6119
Number of pages3
JournalTetrahedron Letters
Volume42
Issue number35
DOIs
StatePublished - 27 Aug 2001

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