The role of silver additives in gold-mediated C–H functionalisation
نویسندگان
چکیده
The role of silver additives is examined in the context of gold-mediated functionalisation of aromatic C-H bonds. Doubt is cast on the commonly cited route of halide abstraction from gold and evidence of substrate activation is given.
منابع مشابه
Epithermal Gold and Base Metal Mineralization at Gandy Deposit, North of Central Iran and the Role of Rhyolitic Intrusions
The Gandy gold-base metal deposit is located in Tertiary Torud-Chahshirin volcano-plutonic range, north of Central Iran. Various styles of gold mineralization occur throughout the range. Mineralization at Gandy occurs in close spatial relation with rhyolitic domes in a caldera setting in a series of narrow brecciated veins. Two mineralogically and spatially different argillic alterations have a...
متن کاملPlant-mediated synthesis of Silver nanoparticles by two species of Cynanchum L. (Apocynaceae): A comparative approach on its physical characteristics
The present study evaluates the biosynthesis of silver nanoparticles (SNPs) mediated by xerophytic plants, Cynanchum viminale and Cynanchum sarcomedium. The reaction between plant extracts and silver nitrate solution resulted in a yellowish brown/dark brown colored solution which suggests the formation of SNPs. Physical characteristics of synthesized SNPs were determined using...
متن کاملPlant-mediated synthesis of Silver nanoparticles by two species of Cynanchum L. (Apocynaceae): A comparative approach on its physical characteristics
The present study evaluates the biosynthesis of silver nanoparticles (SNPs) mediated by xerophytic plants, Cynanchum viminale and Cynanchum sarcomedium. The reaction between plant extracts and silver nitrate solution resulted in a yellowish brown/dark brown colored solution which suggests the formation of SNPs. Physical characteristics of synthesized SNPs were determined using...
متن کاملمطالعه رفتار، پراکندگی ژئوشیمیایی و چگونگی پیدایش طلا و نقره در کانسار مس پورفیری سرچشمه کرمان
Based on this study, the avcfiige gold and silver graJcs in the SaT Chesbmeh porphyry copper deposil arc 0.06 and 1.22 gil re.'ipcct ivcly which arc very different from the o nes repon ed previously. In the bioti lic andes ite and a!ICrcd phyllic/potassic samples from the siock, the high positin: correlation between the hypogene copper and gold grades ( r=0.81 ), and gold 'lIld silw.f grad...
متن کاملComparison of thermodynamics and kinetics of reaction of the ozone with mercury, silver and gold
In this work, we report results of calculations based on the density functional theory of different species metal-ozone, containing mercury, silver and gold. The chosen species range from small molecules and large transition-metal containing ozone with mercury, silver and gold complexes. A comparative analysis of the description of the metal-oxygen bond obtained by different methodologies is pr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره 7 شماره
صفحات -
تاریخ انتشار 2011