scholarly journals 5-Hydroxymethylfurfural (HMF) Production from Real Biomasses

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2201 ◽  
Author(s):  
Federica Menegazzo ◽  
Elena Ghedini ◽  
Michela Signoretto
Keyword(s):  
Direct Synthesis ◽  
Food Wastes ◽  
Catalytic Systems ◽  
Recent Advances

The present paper reviews recent advances on the direct synthesis of 5-hydroxymethylfurfural (HMF) from different kinds of raw biomasses. In particular, in the paper HMF production from: (i) edible biomasses; (ii) non-edible lignocellulosic biomasses; (iii) food wastes (FW) have been reviewed. The different processes and catalytic systems have been reviewed and their merits, demerits and requirements for commercialisation outlined.

scholarly journals Recent Advances in Rapid Synthesis of Non-proteinogenic Amino Acids from Proteinogenic Amino Acids Derivatives via Direct Photo-Mediated C–H Functionalization

Molecules ◽  
2020 ◽  
Vol 25 (22) ◽  
pp. 5270
Author(s):  
Zhenbo Yuan ◽  
Xuanzhong Liu ◽  
Changmei Liu ◽  
Yan Zhang ◽  
Yijian Rao
Keyword(s):  
Amino Acids ◽  
Direct Synthesis ◽  
Environmentally Friendly ◽  
Powerful Method ◽  
Rapid Synthesis ◽  
Conservation Of Energy ◽  
Mild Conditions ◽  
Recent Advances ◽  
Recent Developments

Non-proteinogenic amino acids have attracted tremendous interest for their essential applications in the realm of biology and chemistry. Recently, rising C–H functionalization has been considered an alternative powerful method for the direct synthesis of non-proteinogenic amino acids. Meanwhile, photochemistry has become popular for its predominant advantages of mild conditions and conservation of energy. Therefore, C–H functionalization and photochemistry have been merged to synthesize diverse non-proteinogenic amino acids in a mild and environmentally friendly way. In this review, the recent developments in the photo-mediated C–H functionalization of proteinogenic amino acids derivatives for the rapid synthesis of versatile non-proteinogenic amino acids are presented. Moreover, postulated mechanisms are also described wherever needed.

scholarly journals Recent Advances in Heterogeneous Catalytic Systems Containing Metal Ions for Phosphate Ester Hydrolysis

2020 ◽  
Author(s):  
Marco Antônio G. B. Gomes ◽  
Christiane Fernandes ◽  
Lawrence R. Gahan ◽  
Gerhard Schenk ◽  
Adolfo Horn
Keyword(s):  
Metal Ions ◽  
Ester Hydrolysis ◽  
Phosphate Ester ◽  
Catalytic Systems ◽  
Phosphate Ester Hydrolysis ◽  
Heterogeneous Catalytic ◽  
Recent Advances

scholarly journals Recent Advances in the Direct Synthesis of H 2 O 2

ChemCatChem ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 298-308 ◽  
Author(s):  
Richard J. Lewis ◽  
Graham J. Hutchings
Keyword(s):  
Direct Synthesis ◽  
Recent Advances

scholarly journals Copper-catalyzed enantioselective conjugate addition of organometallic reagents to challenging Michael acceptors

2020 ◽  
Vol 16 ◽  
pp. 212-232 ◽  
Author(s):  
Delphine Pichon ◽  
Jennifer Morvan ◽  
Christophe Crévisy ◽  
Marc Mauduit
Keyword(s):  
Natural Products ◽  
Conjugate Addition ◽  
Catalytic Transformation ◽  
Chiral Molecules ◽  
Catalytic Systems ◽  
Organometallic Reagents ◽  
Recent Advances ◽  
Wide Range ◽  
Michael Acceptors

The copper-catalyzed enantioselective conjugate addition (ECA) of organometallic nucleophiles to electron-deficient alkenes (Michael acceptors) represents an efficient and attractive methodology for providing a wide range of relevant chiral molecules. In order to increase the attractiveness of this useful catalytic transformation, some Michael acceptors bearing challenging electron-deficient functions (i.e., aldehydes, thioesters, acylimidazoles, N-acyloxazolidinones, N-acylpyrrolidinones, amides, N-acylpyrroles) were recently investigated. Remarkably, only a few chiral copper-based catalytic systems have successfully achieved the conjugate addition of different organometallic reagents to these challenging Michael acceptors, with excellent regio- and enantioselectivity. Furthermore, thanks to their easy derivatization, the resulting chiral conjugated products could be converted into various natural products. The aim of this tutorial review is to summarize recent advances accomplished in this stimulating field.

Recent Advances on Catalytic Enantioselective Direct C-H Bond Functionalization of Electron-Deficient N-Containing Heteroarenes

2021 ◽  
Author(s):  
Xiao-Lan Liu ◽  
Luo-Bin Jiang ◽  
Mupeng Luo ◽  
Zhi Ren ◽  
Shou-Guo Wang
Keyword(s):  
Catalytic Systems ◽  
Bond Functionalization ◽  
Recent Advances

Catalytic enantioselective direct C-H bond functionalization of electron-deficient N-containing heteroarenes represents one of the most straightforward and powerful protocols to construct diverse enantioenriched highly functionalized N-heteroarene products. Efficient catalytic systems...

scholarly journals Recent Advances in Catalytic Synthesis of Benzosultams

Molecules ◽  
2020 ◽  
Vol 25 (19) ◽  
pp. 4367
Author(s):  
Quan-Qing Zhao ◽  
Xiao-Qiang Hu
Keyword(s):  
Medicinal Chemistry ◽  
Catalytic Synthesis ◽  
Chiral Catalysts ◽  
Catalytic Systems ◽  
The Past ◽  
Recent Advances ◽  
Efficient Construction

Benzosultams represent one category of multi-heteroatom heterocyclic scaffolds, which have been frequently found in pharmaceuticals, agricultural agents, and chiral catalysts. Given the diversely significant functions of these compounds in organic and medicinal chemistry, great efforts have been made to develop novel catalytic systems for the efficient construction of benzosultam motifs over the past decades. Herein, in this review, we mainly summarize the recent advances in the field of catalytic synthesis of benzosultams from 2017 to August of 2020, with an emphasis on the scopes and mechanisms of representative reactions.

Direct Synthesis of Hydrogen Peroxide: Recent Advances

2009 ◽  
pp. 253-287 ◽  
Author(s):  
Gabriele Centi ◽  
Siglinda Perathoner ◽  
Salvatore Abate
Keyword(s):  
Hydrogen Peroxide ◽  
Direct Synthesis ◽  
Recent Advances
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