scholarly journals Catalytic reduction of dimeric acetylated 2-deoxy-2-nitroso-α-D-glycopyranosyl chlorides

1980 ◽  
Vol 58 (23) ◽  
pp. 2720-2723 ◽  
Author(s):  
T. L. Nagabhushan
Keyword(s):  
Large Scale ◽  
Catalytic Reduction ◽  
Reduction Process ◽  
Platinum Oxide ◽  
Large Scale Synthesis

Reduction of tri-O-acetyl-2-deoxy-2-nitroso-α-D-glucopyranosyl chloride dimer with hydrogen and platinum oxide in the presence of methanol or ethanol afforded the corresponding alkyl tri-O-acetyl-2-amino-2-deoxy-β-D-glucopyranoside hydrochloride. In the absence of an alcohol the product was tri-O-acetyl-2-amino-1,5-anhydro-2-deoxy-D-glucitol hydrochloride. The glycosylation/reduction process gave similar results with the galacto isomer.A method is described for the ready and large-scale synthesis of D-galactosamine hydrochloride.

Large-scale synthesis of high-content Fe nanotubes/nanorings with high magnetization by H2 reduction process

2013 ◽  
Vol 48 (12) ◽  
pp. 5003-5007 ◽  
Author(s):  
Xiaoli Liu ◽  
Minrui Zheng ◽  
Yunbo Lv ◽  
Jie Fang ◽  
Chorng Haur Sow ◽  
...  
Keyword(s):  
Large Scale ◽  
Reduction Process ◽  
Large Scale Synthesis

Large-scale Synthesis of Crystalline Tellurium Nanowires with Controlled-Diameters via a Hydrothermal-reduction Process

2004 ◽  
Vol 33 (5) ◽  
pp. 592-593 ◽  
Author(s):  
Liqiang Xu ◽  
Yanwei Ding ◽  
Guangcheng Xi ◽  
Wanqun Zhang ◽  
Yiya Peng ◽  
...  
Keyword(s):  
Large Scale ◽  
Reduction Process ◽  
Large Scale Synthesis ◽  
Tellurium Nanowires ◽  
Hydrothermal Reduction

Large-Scale Synthesis of Carbon Nanotubes by an Ethanol Thermal Reduction Process

2003 ◽  
Vol 125 (27) ◽  
pp. 8088-8089 ◽  
Author(s):  
Jianwei Liu ◽  
Mingwang Shao ◽  
Xiangying Chen ◽  
Weichao Yu ◽  
Xianming Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Large Scale ◽  
Reduction Process ◽  
Thermal Reduction ◽  
Large Scale Synthesis ◽  
Synthesis Of Carbon Nanotubes

A new facile strategy for higher loading of silver nanoparticles onto silica for efficient catalytic reduction of 4-nitrophenol

RSC Advances ◽  
2015 ◽  
Vol 5 (93) ◽  
pp. 76170-76181 ◽  
Author(s):  
N. Muthuchamy ◽  
A. Gopalan ◽  
Kwang-Pill Lee
Keyword(s):  
Silver Nanoparticles ◽  
Large Scale ◽  
Catalytic Reduction ◽  
Supported Catalysts ◽  
Silica Support ◽  
Large Scale Synthesis ◽  
Facile Route

The facile route to higher loading of silver nanoparticles onto a silica support is useful for large-scale synthesis of efficient silver supported catalysts.

scholarly journals An Experimental Study on the Characteristics of NOx Distributions at the SNCR Inlets of a Large-Scale CFB Boiler

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1267
Author(s):  
Jin Yan ◽  
Xiaofeng Lu ◽  
Changfei Zhang ◽  
Qianjun Li ◽  
Jinping Wang ◽  
...  
Keyword(s):  
Large Scale ◽  
Circulating Fluidized Bed ◽  
Catalytic Reduction ◽  
Field Tests ◽  
Reduction Process ◽  
Urea Solution ◽  
Phase Zone ◽  
Cfb Boiler ◽  
Low Emission ◽  
First Time

The unknown NOx distributions inside large-scale CFB (circulating fluidized bed) boilers have always hindered the economy of the SNCR (selective non-catalytic reduction) process. In this study, field tests were carried out on a typical 300 MW CFB boiler, where multi-level 316 L-made probe and Ecom-J2KN/Testo 350 analyzers were used to perform detailed two-dimensional distributions of flue gas composition at SNCR inlets for the first time. The penetration depth inside the horizontal flue pass was up to 7 m. The NOx distributions were analyzed in detail combining with the auxiliary test in the dilute phase zone. Key results show that the average O2 concentrations in #A and #C regions were 6.52% and 0.95%, respectively. The vertical NOx distributions of #A and #C SNCR inlets were similar, showing a trend of first increasing and then decreasing with peak value all appeared at 5 m depth, while the NOx distribution of #B SNCR inlet was basically increasing. Some local areas with extremely high NOx concentration (over 2000 mg/m3) were observed near the inclined edge of SNCR inlets, which has never been reported before. Based on this, the optimization of urea injections was conducted, which could save 15.7% of the urea solution consumption while ensuring ultra-low emission of NOx.

Exogenous Directing Group Free, Ligand-Enabled gamma-C(sp3)–H Arylation of Free Primary Aliphatic Amines and α-Amino Esters

2019 ◽  
Author(s):  
Yongzheng Ding ◽  
Shuai Fan ◽  
Xiaoxi Chen ◽  
yuzhen gao ◽  
Gang Li
Keyword(s):  
Amino Acids ◽  
Large Scale ◽  
Free Ligand ◽  
Aliphatic Amines ◽  
Rapid Synthesis ◽  
Amino Esters ◽  
Directing Group ◽  
Large Scale Synthesis ◽  
Primary Aliphatic Amines

A Pdᴵᴵ-catalyzed, ligand-enabled gamma-C(sp3)–H arylation of free primary aliphatic amines and amino esters without using an exogenous directing group is reported. This reaction is compatible with unhindered free aliphatic amines, and it is also be applicable to the rapid synthesis of biologically and synthetically valuable unnatural α-amino acids. Large scale synthesis is also feasible using this method.<br>

A Simplified Protocol for the ortho-Deuteration of Acidic Aromatic Compounds in D2O

2019 ◽  
Author(s):  
Alyssa Garreau ◽  
Hanyang Zhou ◽  
Michael Young
Keyword(s):  
Carboxylic Acid ◽  
Aromatic Compounds ◽  
Large Scale ◽  
Simplified Approach ◽  
Directing Group ◽  
Large Scale Synthesis

<div>Methods to catalytically introduce deuterium in synthetically useful yields ortho to a carboxylic acid directing group on arenes typically requires D2 or CD3CO2D, which makes using these approaches cost prohibitive for large scale synthesis (equipment and reagent costs respectively). Herein we present a simplified approach using catalytic RhIII and D2O as deuterium source, and show its application to H/D exchange on various acidic substrates.</div>

A Simplified Protocol for the ortho-Deuteration of Acidic Aromatic Compounds in D2O

2019 ◽  
Author(s):  
Alyssa Garreau ◽  
Hanyang Zhou ◽  
Michael Young
Keyword(s):  
Carboxylic Acid ◽  
Aromatic Compounds ◽  
Large Scale ◽  
Simplified Approach ◽  
Directing Group ◽  
Large Scale Synthesis

<div>Methods to catalytically introduce deuterium in synthetically useful yields ortho to a carboxylic acid directing group on arenes typically requires D2 or CD3CO2D, which makes using these approaches cost prohibitive for large scale synthesis (equipment and reagent costs respectively). Herein we present a simplified approach using catalytic RhIII and D2O as deuterium source, and show its application to H/D exchange on various acidic substrates.</div>

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