Category «spectroscopy»

One-pot synthesis of 2-hydroxymethyl-5-methylpyrazine from renewable 1,3-dihydroxyacetone

It’s only fair to share…   One-pot synthesis of 2-hydroxymethyl-5-methylpyrazine from renewable 1,3-dihydroxyacetone Green Chem., 2017, Advance Article DOI: 10.1039/C7GC00578D, Communication Lei Song, Mingyuan Zheng, Jifeng Pang, Joby Sebastian, Wentao Wang, Minjie Qu, Jian Zhao, Xinhong Wang, Tao Zhang An efficient and environmentally benign method for the synthesis of 2-hydroxymethyl-5-methylpyrazine (HMMP) from biomass derived 1,3-dihydroxyacetone …

Green Synthesis of Veratraldehyde Using Potassium Promoted Lanthanum–Magnesium Mixed Oxide Catalyst

It’s only fair to share…   Veratraldehyde is an important chemical used in perfumery, agrochemical, and pharmaceutical industries. Current processes of manufacture of veratraldehyde use homogeneous catalysts, which make them highly polluting, creating problems of disposal of effluents and product purity. In the current work, veratraldehyde was synthesized from O-alkylation of vanillin with an environmentally …

Iridium-catalyzed highly efficient chemoselective reduction of aldehydes in water using formic acid as the hydrogen source

It’s only fair to share…   Iridium-catalyzed highly efficient chemoselective reduction of aldehydes in water using formic acid as the hydrogen source Green Chem., 2017, Advance Article DOI: 10.1039/C7GC01289F, Paper Zhanhui Yang, Zhongpeng Zhu, Renshi Luo, Xiang Qiu, Ji-tian Liu, Jing-Kui Yang, Weiping Tang A highly efficient iridium catalyst is developed for the chemoselective reduction …

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 …