Category «synthesis»

Selective synthesis of dimethoxyethane via directly catalytic etherification of crude ethylene glycol

It’s only fair to share…   Selective synthesis of dimethoxyethane via directly catalytic etherification of crude ethylene glycol Green Chem., 2017, Advance Article DOI: 10.1039/C7GC00659D, Paper Weiqiang Yu, Fang Lu, Qianqian Huang, Rui Lu, Shuai Chen, Jie Xu A potential diesel fuel additive, dimethoxyethane, was highly selectively produced via etherification of crude ethylene glycol over …

Selective hydrogenation of N-heterocyclic compounds using Ru nanocatalysts in ionic liquids

It’s only fair to share…   Selective hydrogenation of N-heterocyclic compounds using Ru nanocatalysts in ionic liquids Green Chem., 2017, 19,2762-2767 DOI: 10.1039/C7GC00513J, Communication Hannelore Konnerth, Martin H. G. Prechtl N-Heterocyclic compounds have been tested in the selective hydrogenation catalysed by small 1-3 nm sized Ru nanoparticles (NPs) embedded in various imidazolium based ionic liquids …

Is water a suitable solvent for the catalytic amination of alcohols?

It’s only fair to share… Is water a suitable solvent for the catalytic amination of alcohols? Green Chem., 2017, 19,2839-2845 DOI: 10.1039/C7GC00422B, Paper Johannes Niemeier, Rebecca V. Engel, Marcus Rose The catalytic aqueous-phase amination of biogenic alcohols with solid catalysts is reported for future development of renewable amine value-added chains. From the journal: Green Chemistry …

Fe/ppm Cu nanoparticles as a recyclable catalyst for click reactions in water at room temperature

It’s only fair to share… Fe/ppm Cu nanoparticles as a recyclable catalyst for click reactions in water at room temperature Green Chem., 2017, 19,2506-2509 DOI: 10.1039/C7GC00883J, Communication Aurelien Adenot, Evan B. Landstrom, Fabrice Gallou, Bruce H. Lipshutz Nanomicelles housing a terminal alkyne and azide are delivered to ppm Cu-containing nanoparticles that catalyse click reactions in …

Dr. Vinayak Pagar( GUEST BLOGGER) Development of a Povarov Reaction/Carbene Generation Sequence for Alkenyldiazocarbonyl Compounds

It’s only fair to share… Discussing my paper…….. Metal-catalyzed cycloadditions of alkenyldiazo reagents are useful tools to access carbo- and heterocycles.[1] These diazo compounds are chemically sensitive toward both Brønsted orLewis acids. Their reported cycloadditions rely heavily on the formation of metal carbenes to initiate regio- and stereoselective [3+n] cycloadditions (n=2–4) with suitable dipolarophiles.[2–4] A noncarbene route was postulated for a …

The greening of peptide synthesis

It’s only fair to share…   The greening of peptide synthesis Stefan B. Lawrenson,a  Roy Arava  and  Michael North*a  *Corresponding authors aGreen Chemistry Centre of Excellence, Department of Chemistry, University of York, York, UK E-mail: Michael.north@york.ac.uk Abstract The synthesis of peptides by amide bond formation between suitably protected amino acids is a fundamental part of …

New paper on Trelagliptin succinate

It’s only fair to share… Trelagliptin succinate, a novel once-weekly oral dipeptidyl peptidase-4 (DPP-4) inhibitor, was approved for the Japanese market on March 26, 2015 Trelagliptin exhibited a better potency against human DPP-4 than alogliptin and sitagliptin, along with its excellent selectivity and slow-binding properties that may partially contribute to its sustained efficacy. In phase III …

Regioselective access of alkylidendibenzo[c,f]oxocine framework via cyclocarbopalladation/cross-coupling cascade reactions and reductive Heck strategy

It’s only fair to share… Regioselective access of alkylidendibenzo[c,f]oxocine framework via cyclocarbopalladation/cross-coupling cascade reactions and reductive Heck strategy New J. Chem., 2017, Advance Article DOI: 10.1039/C6NJ03825E, Paper Tapas Ghosha   a Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany E-mail: tapas.ghosh@uni-wuerzburg.de,tapasghosh.chem@gmail.com Tel: +49-931-31-81629 New J. Chem., 2017, Advance Article DOI: 10.1039/C6NJ03825E Palladium-catalyzed …

Asymmetric total synthesis of (-)-δ-lycorane

It’s only fair to share… 1H NMR 13C NMR Org. Chem. Front., 2017, Advance Article DOI: 10.1039/C7QO00021A, Research Article Junliang Wang, Jianneng Li, Xianwang Shen, Cong Dong, Jun Lin, Kun Wei A first asymmetric synthesis of (-)-δ-lycorane by using a chiral bifunctional squaramide-catalysed cascade reaction is reported. Asymmetric total synthesis of (−)-δ-lycorane Junliang Wang,ab   Jianneng …

4-Pentenoic acid, 5-(3,4-methylenedioxyphenyl)-3-oxo-, ethyl ester

It’s only fair to share… 4-Pentenoic acid, 5-(3,4-methylenedioxyphenyl)-3-oxo-, ethyl ester cas 860547-52-0 MF C14 H14 O5 4-Pentenoic acid, 5-(1,3-benzodioxol-5-yl)-3-oxo-, ethyl ester Molecular Weight, 262.26 Melting Point (Experimental) Value: 58-60 °C Purification of the residue by flash column chromatography (10% ethyl acetate in hexanes) afforded the β-keto ester (12.0 g, 90%) as a pale yellow oil. …