scholarly journals Catalytic (de)hydrogenation promoted by non-precious metals – Co, Fe and Mn: recent advances in an emerging field

2018 ◽  
Vol 47 (4) ◽  
pp. 1459-1483 ◽  
Author(s):  
Georgy A. Filonenko ◽  
Robbert van Putten ◽  
Emiel J. M. Hensen ◽  
Evgeny A. Pidko
Keyword(s):  
Base Metal ◽  
Precious Metals ◽  
Metal Catalysts ◽  
Recent Advances ◽  
Fe And Mn ◽  
Remarkable Progress ◽  
Made In

This review is aimed at introducing the remarkable progress made in the last three years in the development of base metal catalysts for hydrogenations and dehydrogenative transformations.

Smooth Muscle Contraction: Recent Advances

1994 ◽  
Vol 72 (11) ◽  
pp. 1317-1319
Author(s):  
Newman L. Stephens
Keyword(s):  
Smooth Muscle ◽  
Muscle Contraction ◽  
Myosin Light Chain ◽  
Kinase Activity ◽  
Smooth Muscle Contraction ◽  
Recent Advances ◽  
Regulation Of Contraction ◽  
Muscle Biochemistry ◽  
Remarkable Progress ◽  
Made In

Research in smooth muscle contraction has shown remarkable progress over the last 5 years. Striking advances have been made in the areas of biochemical regulation of contraction, centering on myosin light chain kinase activity, and of biophysical delineation of the contractile process at the actomyosin level by use of the newly developed motility assay. The purpose of the symposium held at Minaki, Ont., was to obtain a comprehensive reporting of the recent advances made in the area of smooth muscle contraction. Specifically, advances in the areas of biophysics of contraction, energetics, and contractile and regulator proteins (including the interesting newcomers caldesmon and calponin) and the changes that occur in pathophysiological entities such as asthma, hypertension, anaphylactic shock, high-altitude hypoxia, and persistent pulmonary hypertension of the newborn were presented.Key words: smooth muscle biophysics, smooth muscle biochemistry, energetics of smooth muscle, pathophysiology of smooth muscle.

ChemInform Abstract: Recent Advances on the Design of Group VIII Base-Metal Catalysts with Encapsulated Structures

ChemInform ◽  
2015 ◽  
Vol 46 (39) ◽  
pp. no-no
Author(s):  
Hao Tian ◽  
Xinyu Li ◽  
Liang Zeng ◽  
Jinlong Gong
Keyword(s):  
Base Metal ◽  
Metal Catalysts ◽  
Group Viii ◽  
Recent Advances ◽  
Encapsulated Structures

scholarly journals Emergence and Applications of Base Metals (Fe, Co, and Ni) in Hydroboration and Hydrosilylation

Molecules ◽  
2019 ◽  
Vol 24 (17) ◽  
pp. 3194 ◽  
Author(s):  
Sem Raj Tamang ◽  
Michael Findlater
Keyword(s):  
Metal Complexes ◽  
Base Metal ◽  
Precious Metals ◽  
Review Article ◽  
Metal Salts ◽  
Base Metals ◽  
Metal Catalysis ◽  
Recent Advances

Base metal catalysis offers an alternative to reactions, which were once dominated by precious metals in hydrofunctionalization reactions. This review article details the development of some base metals (Fe, Co, and Ni) in the hydroboration and hydrosilylation reactions concomitant with a brief overview of recent advances in the field. Applications of both commercially available metal salts and well-defined metal complexes in catalysis and opportunities to further advance the field is discussed as well.

scholarly journals Base Metal Catalysts for Deoxygenative Reduction of Amides to Amines

Catalysts ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 490 ◽  
Author(s):  
Andrey Khalimon ◽  
Kristina Gudun ◽  
Davit Hayrapetyan
Keyword(s):  
Base Metal ◽  
Precious Metals ◽  
Building Blocks ◽  
Metal Catalysts ◽  
Environmentally Benign ◽  
Attractive Alternative ◽  
Catalytic Systems ◽  
Amide Carbonyl ◽  
Amide Carbonyl Group ◽  
Metal Catalyzed

The development of efficient methodologies for production of amines attracts significant attention from synthetic chemists, because amines serve as essential building blocks in the synthesis of many pharmaceuticals, natural products, and agrochemicals. In this regard, deoxygenative reduction of amides to amines by means of transition-metal-catalyzed hydrogenation, hydrosilylation, and hydroboration reactions represents an attractive alternative to conventional wasteful techniques based on stoichiometric reductions of the corresponding amides and imines, and reductive amination of aldehydes with metal hydride reagents. The relatively low electrophilicity of the amide carbonyl group makes this transformation more challenging compared to reduction of other carbonyl compounds, and the majority of the reported catalytic systems employ precious metals such as platinum, rhodium, iridium, and ruthenium. Despite the application of more abundant and environmentally benign base metal (Mn, Fe, Co, and Ni) complexes for deoxygenative reduction of amides have been developed to a lesser extent, such catalytic systems are of great importance. This review is focused on the current achievements in the base-metal-catalyzed deoxygenative hydrogenation, hydrosilylation, and hydroboration of amides to amines. Special attention is paid to the design of base metal catalysts and the mechanisms of such catalytic transformations.

Recent Advances on the Design of Group VIII Base-Metal Catalysts with Encapsulated Structures

ACS Catalysis ◽  
2015 ◽  
Vol 5 (8) ◽  
pp. 4959-4977 ◽  
Author(s):  
Hao Tian ◽  
Xinyu Li ◽  
Liang Zeng ◽  
Jinlong Gong
Keyword(s):  
Base Metal ◽  
Metal Catalysts ◽  
Group Viii ◽  
Recent Advances ◽  
Encapsulated Structures

Reuse of Sludge from Pulp and Paper Industry Pilot and Full Scale Applications

1993 ◽  
Vol 28 (2) ◽  
pp. 17-26 ◽  
Author(s):  
V. Eroǧlu ◽  
A. M. Saatçi
Keyword(s):  
Economic Analysis ◽  
Paper Industry ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Full Scale ◽  
Primary Sludge ◽  
Recent Advances ◽  
Made In

Recent advances made in the reuse of pulp and paper industry sludges in hardboard production are explained. Data obtained from pilot and full-scale plants using primary sludge of a pulp and paper industry as an additive in the production of hardboard is presented. An economic analysis of the reuse of pulp and paper primary sludge in hardboard manufacturing is given. The quality of the hardboard produced is tested and compared with the qualities of the hardboard produced by the same plant before the addition of primary sludge. The hardboard with primary sludge additive has been used in Turkey for about a year in the manufacturing of office and home furniture. The results are very satisfactory when the primary sludge is used at 1/4 ratio.

Recent advances on the synthesis of the antidepressant Paroxetine

2020 ◽  
Vol 27 ◽  
Author(s):  
Joana Santos ◽  
M. Fernanda Proença ◽  
Ana Joao Rodrigues ◽  
Patricia Patrício ◽  
H. Sofia Domingues
Keyword(s):  
Total Synthesis ◽  
Neurological Disorders ◽  
Serotonin Reuptake ◽  
Potent Inhibitor ◽  
Starting Material ◽  
Substitution Pattern ◽  
Biological Probes ◽  
Recent Advances ◽  
Treatment Of Depression ◽  
Made In

: Paroxetine is a potent inhibitor of serotonin reuptake and is widely prescribed for the treatment of depression and other neurological disorders. The synthesis of paroxetine and the possibility to prepare derivatives with a specific substitution pattern that may allow their use as biological probes, is an attractive topic especially for medicinal chemists engaged in neurosciences research. Considering the extensive work that was developed in the last decade on the total synthesis of paroxetine, this review summarizes the most important contributions in this field, organized according to the reagent that was used as starting material. Most of the methods allowed to prepare paroxetine in 4-9 steps with an overall yield of 9-66%. Despite the progress made in this area, there is still room for improvement, searching for new eco-friendly and sustainable synthetic alternatives.

Designed pincer ligands supported Co(II)-based catalysts for dehydrogenative activation of alcohols: Studies on N-alkylation of amines, -alkylation of ketones and synthesis of quinolines

2021 ◽  
Author(s):  
Anshu Singh ◽  
Ankur Maji ◽  
Mayank Joshi ◽  
Angshuman Roychoudhury ◽  
Kaushik Ghosh
Keyword(s):  
Base Metal ◽  
Metal Catalysts ◽  
Pincer Ligands ◽  
Activation Of Alcohols

Base-metal catalysts Co1, Co2 and Co3 were synthesized from designed pincer ligands L1, L2 and L3 having NNN donor atoms respectively. Co1, Co2 and Co3 were characterized by IR, UV–Vis....

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