scholarly journals Catalytic Oxidation Processes for the Upgrading of Terpenes: State-of-the-Art and Future Trends

Catalysts ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 893 ◽  
Author(s):  
Denicourt-Nowicki ◽  
Rauchdi ◽  
Ali ◽  
Roucoux
Keyword(s):  
Double Bond ◽  
Catalytic Oxidation ◽  
Critical Review ◽  
Heterogeneous Catalysts ◽  
State Of The Art ◽  
Future Trends ◽  
Olefinic Bond ◽  
Unsaturated Ketones ◽  
Oxidation Processes ◽  
Pharmaceutical Industries

Terpenic olefins constitute a relevant platform of renewable molecules, which could be used as key intermediates for the perfumery, flavoring, and pharmaceutical industries. The upgrading of these cheap and available agro-resources through catalytic oxidation processes remains of great interest, leading to the formation of either epoxides via the oxidation of the olefinic bond or α,β-unsaturated ketones by the Csp3-H functionalization at the α-position of the double bond. This critical review summarizes some of the most relevant homogeneous or heterogeneous catalysts designed for the oxidation of some abundant terpenic olefins in the last decade (2008–2018).

scholarly journals Application of Microextraction-Based Techniques for Screening-Controlled Drugs in Forensic Context—A Review

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2168
Author(s):  
Samir M. Ahmad ◽  
Oriana C. Gonçalves ◽  
Mariana N. Oliveira ◽  
Nuno R. Neng ◽  
José M. F. Nogueira
Keyword(s):  
Environmental Sustainability ◽  
Illicit Drugs ◽  
State Of The Art ◽  
Cost Benefit ◽  
Future Trends ◽  
Present Contribution ◽  
Controlled Drugs ◽  
Related Compounds ◽  
Innovative Techniques ◽  
Great Simplicity

The analysis of controlled drugs in forensic matrices, i.e., urine, blood, plasma, saliva, and hair, is one of the current hot topics in the clinical and toxicological context. The use of microextraction-based approaches has gained considerable notoriety, mainly due to the great simplicity, cost-benefit, and environmental sustainability. For this reason, the application of these innovative techniques has become more relevant than ever in programs for monitoring priority substances such as the main illicit drugs, e.g., opioids, stimulants, cannabinoids, hallucinogens, dissociative drugs, and related compounds. The present contribution aims to make a comprehensive review on the state-of-the art advantages and future trends on the application of microextraction-based techniques for screening-controlled drugs in the forensic context.

scholarly journals A critical review of state-of-the-art electrocoagulation technique applied to COD-rich industrial wastewaters

2021 ◽  
Author(s):  
Milad Mousazadeh ◽  
Elnaz Karamati Niaragh ◽  
Muhammad Usman ◽  
Saif Ullah Khan ◽  
Miguel Angel Sandoval ◽  
...  
Keyword(s):  
Critical Review ◽  
State Of The Art ◽  
Industrial Wastewaters

scholarly journals Facile Synthesis of COF-Supported Reduced Pd-Based Catalyst for One-Pot Reductive Amination of Aldehydes

Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 287
Author(s):  
Jianguo Liu ◽  
Mingyue Zhang ◽  
Longlong Ma
Keyword(s):  
Heterogeneous Catalysts ◽  
Reductive Amination ◽  
Secondary Amines ◽  
Metallic State ◽  
One Pot ◽  
Effective Synthesis ◽  
Pharmaceutical Industries ◽  
The One ◽  
Heterocyclic Aldehydes ◽  
Supported Pd

Dibenzylamine motifs are an important class of crucial organic compounds and are widely used in fine chemical and pharmaceutical industries. The development of the efficient, economical, and environmentally friendly synthesis of amines using transition metal-based heterogeneous catalysts remains both desirable and challenging. Herein, we prepared the covalent organic framework (COF)-supported heterogeneous reduced COF-supported Pd-based catalyst and used it for the one-pot reductive amination of aldehydes. There are both Pd metallic state and oxidated Pdσ+ in the catalysts. Furthermore, in the presence of the reduced COF-supported Pd-based catalyst, many aromatic, aliphatic, and heterocyclic aldehydes with various functional groups substituted were converted to their corresponding amines products in good to excellent selectivity (up to 91%) under mild reaction conditions (70 °C, 2 h, NH3, 20 bar H2). This work expands the covalent organic frameworks for the material family and its support catalyst, opening up new catalytic applications in the economical, practical, and effective synthesis of secondary amines.

scholarly journals Peptides encoded by noncoding genes: challenges and perspectives

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Shuo Wang ◽  
Chuanbin Mao ◽  
Shanrong Liu
Keyword(s):  
Critical Review ◽  
Life Sciences ◽  
Future Trends ◽  
Biological Functions ◽  
Entry Points ◽  
Extracellular Stimuli ◽  
Living Organisms ◽  
Action Modes ◽  
Adjustment Mechanisms

AbstractIn recent years, noncoding gene (NCG) translation events have been frequently discovered. The resultant peptides, as novel findings in the life sciences, perform unexpected functions of increasingly recognized importance in many fundamental biological and pathological processes. The emergence of these novel peptides, in turn, has advanced the field of genomics while indispensably aiding living organisms. The peptides from NCGs serve as important links between extracellular stimuli and intracellular adjustment mechanisms. These peptides are also important entry points for further exploration of the mysteries of life that may trigger a new round of revolutionary biotechnological discoveries. Insights into NCG-derived peptides will assist in understanding the secrets of life and the causes of diseases, and will also open up new paths to the treatment of diseases such as cancer. Here, a critical review is presented on the action modes and biological functions of the peptides encoded by NCGs. The challenges and future trends in searching for and studying NCG peptides are also critically discussed.

scholarly journals Solvent inhibition in the liquid-phase catalytic oxidation of 1,4-butanediol: understanding the catalyst behaviour from NMR relaxation time measurements

2016 ◽  
Vol 6 (21) ◽  
pp. 7896-7901 ◽  
Author(s):  
Carmine D'Agostino ◽  
Mark R. Feaviour ◽  
Gemma L. Brett ◽  
Jonathan Mitchell ◽  
Andrew P. E. York ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Liquid Phase ◽  
Catalytic Oxidation ◽  
Heterogeneous Catalysts ◽  
Nmr Relaxation ◽  
Nmr Relaxation Time

Solvent inhibition over surfaces affects behaviour and performances of heterogeneous catalysts.

scholarly journals Two decades after Korpi and Palme’s “paradox of redistribution”: What have we learned so far and where do we take it from here?

2021 ◽  
pp. 1-16 ◽  
Author(s):  
Dimitri Gugushvili ◽  
Tijs Laenen
Keyword(s):  
Social Policy ◽  
Income Inequality ◽  
Critical Review ◽  
Institutional Design ◽  
State Of The Art ◽  
Causal Chain ◽  
Empirical Literature ◽  
The Poor ◽  
History Of ◽  
Per Se

Abstract Over two decades ago, Korpi and Palme (1998) published one of the most influential papers in the history of social policy discipline, in which they put forward a “paradox of redistribution”: the more countries target welfare resources exclusively at the poor, the less redistribution is actually achieved and the less income inequality and poverty are reduced. The current paper provides a state-of-the-art review of empirical research into that paradox. More specifically, we break down the paradox into seven core assumptions, which together form a causal chain running from institutional design to redistributive outcomes. For each causal assumption, we offer a comprehensive and critical review of the relevant empirical literature, also including a broader range of studies that do not aim to address Korpi and Palme’s paradox per se, but are nevertheless informative about it.

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