3. Recent advances in the application of carbohydrates as renewable feedstocks for the synthesis of nitrogen-containing compounds

Recent Advances of 1,3,5-Triazinanes in Aminomethylation and Cycloaddition Reactions

Synthesis ◽

10.1055/s-0040-1707160 ◽

2020 ◽

Vol 52 (17) ◽

pp. 2469-2482

Author(s):

Jia-Rong Chen ◽

Dong Liang ◽

Wen-Jing Xiao

Keyword(s):

Reaction Mechanisms ◽

Short Review ◽

Cycloaddition Reactions ◽

Recent Advances ◽

Nitrogen Containing Compounds

1,3,5-Trisubstituted 1,3,5-triazinanes (hexahydro-1,3,5-triazines), as stable and readily available surrogates for formaldimines, have found extensive applications for the construction of various nitrogen-containing compounds. The formaldimines, formed in situ from this reagent class, can participate in various aminomethylation and cycloaddition reactions. This short review presents recent advances in this field with emphasis on the conceptual ideas behind the developed methodologies and the reaction mechanisms.1 Introduction2 Aminomethylations with 1,3,5-Triazinanes3 Cycloadditions with 1,3,5-Triazinanes3.1 Use of 1,3,5-Triazinanes as Two-Atom Synthons3.2 Use of 1,3,5-Triazinanes as Three-Atom Synthons3.3 Use of 1,3,5-Triazinanes as Four-Atom Synthons3.4 Use of 1,3,5-Triazinanes as Six-Atom Synthons4 Conclusions

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Recent Advances in the Chemistry of 2-Acylaziridines

Synthesis ◽

10.1055/s-0036-1590889 ◽

2017 ◽

Vol 49 (23) ◽

pp. 5093-5104 ◽

Cited By ~ 5

Author(s):

Alena Pankova ◽

Mikhail Kuznetsov

Keyword(s):

Carbonyl Group ◽

Ring Opening ◽

Bond Cleavage ◽

Aziridine Ring ◽

Reaction Selectivity ◽

Recent Advances ◽

Nitrogen Containing Compounds

This review highlights recent achievements in the transformations of 2-acylaziridines toward the synthesis of cyclic and acyclic nitrogen-containing compounds. The influence of a carbonyl group on reaction selectivity is discussed.1 Introduction2 Reactions via C–C Bond Cleavage3 Reactions via C–N Bond Cleavage3.1 Reactions Starting with the Aziridine Ring Opening3.2 Reactions Starting at the Carbonyl Group4 Conclusion

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Recent advances in the tandem reaction of azides with alkynes or alkynols

Organic & Biomolecular Chemistry ◽

10.1039/c6ob01965j ◽

2016 ◽

Vol 14 (48) ◽

pp. 11317-11331 ◽

Cited By ~ 31

Author(s):

Xian-Rong Song ◽

Yi-Feng Qiu ◽

Xue-Yuan Liu ◽

Yong-Min Liang

Keyword(s):

Tandem Reaction ◽

Synthetic Chemistry ◽

The Past ◽

Recent Advances ◽

Nitrogen Containing Compounds ◽

Significant Attention

Over the past few decades, the development of versatile methodologies to employ azides as aminating agents for the formation of nitrogen-containing compounds has attracted significant attention in synthetic chemistry.

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Recent advances in the application of carbohydrates as renewable feedstocks for the synthesis of nitrogen-containing compounds

Physical Sciences Reviews ◽

10.1515/psr-2018-0074 ◽

2018 ◽

Vol 4 (1) ◽

Author(s):

S. Iraj Sadraei ◽

Brent St Onge ◽

John F. Trant

Keyword(s):

Climate Change ◽

Fossil Fuels ◽

Recent Progress ◽

Special Focus ◽

Fine Chemicals ◽

Economic Costs ◽

Heterocycle Synthesis ◽

Renewable Feedstocks ◽

The Social ◽

Nitrogen Containing Compounds

Abstract Carbohydrates, in the form of chitin, chitosan and cellulose, are one of the most available, renewable, and sustainable chemical feedstocks. Their conversion to biofuels, fine chemicals, and industrially-relevant monomers is becoming increasingly viable and promising as innovation decreases the price of this technology, and climate change and the price of fossil fuels increases the social and economic costs of using traditional feedstocks. In recent years, carbohydrates have been increasingly used as sources for nitrogen-containing fine chemicals. This chapter, with 86 references, provides a brief overview of the conversion of carbohydrate biomass to the standard hydrocarbon and oxygen-containing derivatives, and then provides a survey of recent progress in converting the biopolymers, and the derived mono and di-saccharides, into nitrogen-containing molecules with a special focus on N-heterocycle synthesis for medicinal applications.

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Recent advances in biological production of 1,3-propanediol：new routes and engineering strategies

Green Chemistry ◽

10.1039/d1gc04288b ◽

2022 ◽

Author(s):

Fanghuan Zhu ◽

Dehua Liu ◽

Zhen Chen

Keyword(s):

Biological Production ◽

Renewable Feedstocks ◽

Recent Advances ◽

Important Chemical

1,3-Propanediol (1,3-PDO) is an important chemical which has been widely used in cosmetic, pharmaceutical, and especially polymer industries. Production of 1,3-PDO from renewable feedstocks by green processes is attracting broad...

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Recent Advances in High Dispersion Spectroscopy of Globular Cluster Stars

Symposium - International Astronomical Union ◽

10.1017/s0074180900035610 ◽

1988 ◽

Vol 132 ◽

pp. 525-530

Author(s):

Raffaele G. Gratton

Keyword(s):

Globular Cluster ◽

Globular Clusters ◽

High Dispersion ◽

Photographic Material ◽

Recent Advances ◽

Metal Abundances ◽

Ccd Detectors ◽

Major Progress

The use CCD detectors has allowed a major progress in abundance derivations for globular cluster stars in the last years. Abundances deduced from high dispersion spectra now correlates well with other abundance indicators. I discuss some problems concerning the derivation of accurate metal abundances for globular clusters using high dispersion spectra from both the old photographic and the most recent CCD data. The discrepant low abundances found by Cohen (1980), from photographic material for M71 giants, are found to be due to the use of too high microturbulences.

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Chelation-assisted transition metal-catalysed C–H chalcogenylations

Organic Chemistry Frontiers ◽

10.1039/c9qo01497g ◽

2020 ◽

Vol 7 (8) ◽

pp. 1022-1060 ◽

Cited By ~ 7

Author(s):

Wenbo Ma ◽

Nikolaos Kaplaneris ◽

Xinyue Fang ◽

Linghui Gu ◽

Ruhuai Mei ◽

...

Keyword(s):

Transition Metal ◽

Recent Advances ◽

Site Selectivity ◽

Transition Metal Catalyzed ◽

Metal Catalyzed

This review summarizes recent advances in C–S and C–Se formations via transition metal-catalyzed C–H functionalization utilizing directing groups to control the site-selectivity.

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Nucleosome dynamics

Biochemical Society Symposium ◽

10.1042/bss0730109 ◽

2006 ◽

Vol 73 ◽

pp. 109-119 ◽

Cited By ~ 2

Author(s):

Chris Stockdale ◽

Michael Bruno ◽

Helder Ferreira ◽

Elisa Garcia-Wilson ◽

Nicola Wiechens ◽

...

Keyword(s):

High Resolution ◽

Chromatin Structure ◽

Current Knowledge ◽

Dynamic Properties ◽

Structure And Dynamics ◽

Nucleosome Dynamics ◽

Sharp Focus ◽

Recent Advances ◽

Insight Into ◽

Chromatin Structure And Dynamics

In the 30 years since the discovery of the nucleosome, our picture of it has come into sharp focus. The recent high-resolution structures have provided a wealth of insight into the function of the nucleosome, but they are inherently static. Our current knowledge of how nucleosomes can be reconfigured dynamically is at a much earlier stage. Here, recent advances in the understanding of chromatin structure and dynamics are highlighted. The ways in which different modes of nucleosome reconfiguration are likely to influence each other are discussed, and some of the factors likely to regulate the dynamic properties of nucleosomes are considered.

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