- 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
PMID24956218
ABSTRACT
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.
MATERIALS
Product Number
Brand
Product Description
Silver, foil, light tested, 50x50mm, thickness 0.0125mm, 99.95+%
Silver, insulated wire, 5m, conductor diameter 0.125mm, insulation thickness 0.015mm, PTFE (polytetrafluoroethylene) insulation, 99.99%
Silver, tube, 1000mm, outside diameter 1.1mm, inside diameter 0.75mm, wall thickness 0.175mm, as drawn, 99.95+%
Gold, tube, 100mm, outside diameter 3.0mm, inside diameter 2.8mm, wall thickness 0.10mm, as drawn, 99.95%
Silver, tube, 100mm, outside diameter 1.1mm, inside diameter 0.75mm, wall thickness 0.175mm, as drawn, 99.95+%
Silver, rod, 50mm, diameter 16mm, as drawn, 99.95+%
Gold, rod, 6mm, diameter 6.0mm, as drawn, 99.95%
Silver, insulated wire, 5m, conductor diameter 0.025mm, insulation thickness 0.005mm, polyester insulation, 99.99%
Silver, insulated wire, 2m, conductor diameter 0.025mm, insulation thickness 0.005mm, polyurethane insulation, 99.99%
Gold, insulated wire, 0.5m, conductor diameter 0.125mm, insulation thickness 0.014mm, polyester insulation, 99.99%
Silver, sphere, 200pcs, diameter 0.5mm, precision sphere grade
Silver, insulated wire, 20m, conductor diameter 0.25mm, insulation thickness 0.024mm, PTFE (polytetrafluoroethylene) insulation, 99.99%
Gold, microfoil, disks, 10mm, thinness 0.01μm, specific density 20.7μg/cm2, permanent mylar 3.5μm support, 99.99+%
Silver, rod, 100mm, diameter 3.5mm, as drawn, 99.95+%
Silver, insulated wire, 1m, conductor diameter 0.075mm, insulation thickness 0.010mm, nylon insulation, 99.99%