نتایج جستجو برای: Atom economic

تعداد نتایج: 363960  

Ali Kiasat, Fakhri Ataeian Mehdi Fallah-Mehrjardi

For the first time B-podands have been studied as an efficient and powerful catalysts in the ring opening of epoxides with azide anion in water. The reaction afforded the corresponding 1,2-azidoalcohols with high regioselectivity under mild reaction conditions and in a highly atom economic fashion.

Ali Kiasat, Fakhri Ataeian Mehdi Fallah-Mehrjardi

For the first time B-podands have been studied as an efficient and powerful catalysts in the ring opening of epoxides with azide anion in water. The reaction afforded the corresponding 1,2-azidoalcohols with high regioselectivity under mild reaction conditions and in a highly atom economic fashion.

2017
Gregory J P Perry Igor Larrosa

The beginning of the 21st century has seen tremendous growth in the field of decarboxylative activation. Benzoic acid derivatives are now recognised as atom-economic alternatives to traditional cross-coupling partners, and they also benefit from being inexpensive, readily available and shelf-stable reagents. In this microreview we discuss recent developments in the coupling of benzoic acid deri...

Journal: :Journal of the American Chemical Society 2011

پایان نامه :0 1392

nowadays in trade and economic issues, prediction is proposed as the most important branch of science. existence of effective variables, caused various sectors of the economic and business executives to prefer having mechanisms which can be used in their decisions. in recent years, several advances have led to various challenges in the science of forecasting. economical managers in various fi...

Journal: :Molecules 2017
Yan-Li Xu Qing-Hu Teng Wei Tong Heng-Shan Wang Ying-Ming Pan Xian-Li Ma

Transition-metal-free synthesis of 4-pyrones via TfOH-promoted nucleophilic addition/cyclization of diynones and water has been developed. This transformation is simple, atom economical and environmentally benign, providing rapid and efficient access to substituted 4-pyrones.

Journal: :iranian journal of catalysis 2012
ali r. kiasat fakhri ataeian mehdi fallah-mehrjardi

for the first time b-podands have been studied as an efficient and powerful catalysts in the ring opening of epoxides with azide anion in water. the reaction afforded the corresponding 1,2-azidoalcohols with high regioselectivity under mild reaction conditions and in a highly atom economic fashion.

Journal: :Asian Journal of Chemistry and Pharmaceutical Sciences 2017

Journal: :Synthetic Communications 2021

Three improved thiophosphoroselenenylation procedures of CH-acids, including derivatives malonic and acetyl-, phosphono-, 4-nitrophenyl- 3-pyridylacetic acids, have been described compared to previously reported thiophosphoroselenylation diethyl malonate using bis(disopropoxyphosphinothioyl)diselenide alone or with the aid methyl iodide. The use iodine makes it possible utilize both equivalents...

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