Aerosol route synthesis of Ni-CeO2-Al2O3 hybrid nanoparticle cluster for catalysis of reductive amination of polypropylene glycol

2019 ◽  
Vol 30 (10) ◽  
pp. 2293-2298 ◽  
Author(s):  
Hung-Yen Chang ◽  
Guan-Hung Lai ◽  
De-Hao Tsai
Keyword(s):  
Reductive Amination ◽  
Polypropylene Glycol ◽  
Hybrid Nanoparticle ◽  
Nanoparticle Cluster

scholarly journals Improved H2 utilization by Pd doping in cobalt catalysts for reductive amination of polypropylene glycol

RSC Advances ◽  
2020 ◽  
Vol 10 (73) ◽  
pp. 45159-45169
Author(s):  
Kyungjun Kim ◽  
Dong Woo Kang ◽  
Youngheon Choi ◽  
Wanggyu Kim ◽  
Hyunjoo Lee ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Reductive Amination ◽  
Cobalt Catalysts ◽  
Cobalt Metal ◽  
Polypropylene Glycol ◽  
Hydrogen Dissociation ◽  
Pd Doping ◽  
P Addition

Addition of Pd into Co helped remarkably to reduce cobalt oxide and nitride to cobalt metal by enhanced hydrogen dissociation and desorption.

Reductive amination of polypropylene glycol using Ni-CeO2@Al2O3 with high activity, selectivity and stability

2019 ◽  
Vol 127 ◽  
pp. 15-19 ◽  
Author(s):  
Hung-Yen Chang ◽  
Guan-Hung Lai ◽  
Chih-Yuan Lin ◽  
Chun-Yu Lee ◽  
Chih-Cheng Chia ◽  
...  
Keyword(s):  
High Activity ◽  
Reductive Amination ◽  
Polypropylene Glycol

Y2O3-Inserted Co-Pd/zeolite catalysts for reductive amination of polypropylene glycol

2018 ◽  
Vol 568 ◽  
pp. 114-122 ◽  
Author(s):  
Kyungjun Kim ◽  
Youngheon Choi ◽  
Hyunjoo Lee ◽  
Jae W. Lee
Keyword(s):  
Reductive Amination ◽  
Zeolite Catalysts ◽  
Polypropylene Glycol

Aerosol-Based Self-Assembly of a Ag–ZnO Hybrid Nanoparticle Cluster with Mechanistic Understanding for Enhanced Photocatalysis

Langmuir ◽  
2018 ◽  
Vol 34 (17) ◽  
pp. 5030-5039 ◽  
Author(s):  
Li-Ting Chen ◽  
Ung-Hsuan Liao ◽  
Je-Wei Chang ◽  
Shih-Yuan Lu ◽  
De-Hao Tsai
Keyword(s):  
Self Assembly ◽  
Hybrid Nanoparticle ◽  
Mechanistic Understanding ◽  
Nanoparticle Cluster

Selective Functionalization at N2-Position of Guanine in Oligonucleotides via Reductive Amination

2020 ◽  
Author(s):  
Bapurao Bhoge ◽  
Ishu Saraogi
Keyword(s):  
Organic Chemistry ◽  
Chemical Biology ◽  
Reductive Amination ◽  
The Other ◽  
Dna Oligomers ◽  
Site Specific ◽  
Wide Applicability ◽  
Dna Oligonucleotides ◽  
Selective Functionalization

Chemo- and site-specific modifications in oligonucleotides have wide applicability as mechanistic probes in chemical biology. Here we have employed a classical reaction in organic chemistry, reductive amination, to selectively functionalize the N<sup>2</sup>-amine of guanine/2’-deoxyguanine monophosphate. This method specifically modifies guanine in several tested DNA oligonucleotides, while leaving the other bases unaffected. Using this approach, we have successfully incorporated desired handles chemoselectively into DNA oligomers.

Bringing Biocatalysis into the Deuteration Toolbox

2019 ◽  
Author(s):  
Jack Rowbotham ◽  
Oliver Lenz ◽  
Holly Reeve ◽  
Kylie Vincent
Keyword(s):  
Late Stage ◽  
Hydrogen Isotope ◽  
Reductive Amination ◽  
Mechanistic Studies ◽  
Ambient Conditions ◽  
Synthetic Pathway ◽  
Drug Candidates ◽  
Isotopic Selectivity ◽  
Reducing Equivalents

<p></p><p>Chemicals labelled with the heavy hydrogen isotope deuterium (<sup>2</sup>H) have long been used in chemical and biochemical mechanistic studies, spectroscopy, and as analytical tracers. More recently, demonstration of selectively deuterated drug candidates that exhibit advantageous pharmacological traits has spurred innovations in metal-catalysed <sup>2</sup>H insertion at targeted sites, but asymmetric deuteration remains a key challenge. Here we demonstrate an easy-to-implement biocatalytic deuteration strategy, achieving high chemo-, enantio- and isotopic selectivity, requiring only <sup>2</sup>H<sub>2</sub>O (D<sub>2</sub>O) and unlabelled dihydrogen under ambient conditions. The vast library of enzymes established for NADH-dependent C=O, C=C, and C=N bond reductions have yet to appear in the toolbox of commonly employed <sup>2</sup>H-labelling techniques due to requirements for suitable deuterated reducing equivalents. By facilitating transfer of deuterium atoms from <sup>2</sup>H<sub>2</sub>O solvent to NAD<sup>+</sup>, with H<sub>2</sub> gas as a clean reductant, we open up biocatalysis for asymmetric reductive deuteration as part of a synthetic pathway or in late stage functionalisation. We demonstrate enantioselective deuteration via ketone and alkene reductions and reductive amination, as well as exquisite chemo-control for deuteration of compounds with multiple unsaturated sites.</p><p></p>

’Propylene glycolate’ used as a top coat seal to protect thick juice from degradation in ellipsoidal storage tanks

2013 ◽  
pp. 215-218
Author(s):  
Robert O. Hatch ◽  
Craig M. Giles ◽  
Jay S. Creiglow ◽  
David R. Smith
Keyword(s):  
Propylene Glycol ◽  
Barrier Layer ◽  
Chemical Properties ◽  
Polypropylene Glycol ◽  
Storage Tanks ◽  
First Results ◽  
Thick Juice

The use of sodium propylene glycol for thick juice storage was investigated at Spreckels Sugar Company, in Brawley, California (USA). Sodium-polypropylene glycol has a density of 1.07 and does not mix with thick juice. Therefore it is suitable as a barrier layer. Chemical properties of propylene glycol, and the deposition on the top of thick juice are described. First results of the last campaign are compared with data from previous years. A significantly lower tendency in the reduction of the quality of the thick juice was found.

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