Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 73, Issue 19, Pages 7731-7734Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jo8014819
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Funding
- Research Grants Council of Hong Kong [CERG: PolyU 5005/07P]
- University Grants Committee Areas of Excellence Schem [AoE/P-10/01]
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A family of indolyl phosphine ligands was applied to Suzuki-Miyaura cross-coupling of aryl tosylates. Catalyst loading can be reduced to 0.2 mol % for coupling of nonactivated aryl tosylate. A challenging example for room temperature coupling is realized. The scope of this highly active Pd/L2 system can be extended to other boron nucleophiles, including trifluoroborate salts and boronate esters. The ligand structural comparisons toward the reactivity in tosylate couplings are also described.
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