Efficient generation and increased reactivity in cationic gold via Brønsted acid or Lewis acid assisted activation of an imidogold precatalyst.

Efficient generation and increased reactivity in cationic gold via Brønsted acid or Lewis acid assisted activation of an imidogold precatalyst.

Organic letters (2014-06-24)

Junbin Han, Naoto Shimizu, Zhichao Lu, Hideki Amii, Gerald B Hammond, Bo Xu

ZUSAMMENFASSUNG

Brønsted or Lewis acid assisted activation of an imidogold precatalyst (L-Au-Pht, Pht = phthalimide) offers a superior way to generate cationic gold compared with the commonly used silver-based system. It is also broadly applicable for most common gold-catalyzed reactions. For reactions that require milder conditions, milder acids can be used for optimized efficiency.

MATERIALIEN

Produktnummer

Marke

Produktbeschreibung

735825

Sigma-Aldrich

Silber, conductive paste

327085

Sigma-Aldrich

Silber, powder, 2-3.5 μm, ≥99.9% trace metals basis

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Silber, nanopowder, <150 nm particle size, 99% trace metals basis

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Silber, flakes, 10 μm, ≥99.9% trace metals basis

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Silber, wire, diam. 0.5 mm, 99.9% trace metals basis

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265772

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Gold, powder, <45 μm, 99.99% trace metals basis

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Silber-Nanodrähte, diam. × L 200 nm × 10 μm, 0.5% (isopropyl alcohol suspension)

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Silber, wire, diam. 1.0 mm, 99.9% trace metals basis

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Silber, granular, >250 μm, 99.99% trace metals basis

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Silber, powder, <45 μm, ≥99.99% trace metals basis

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