ChemInform Abstract: Recent Advances in the Synthesis of Azonia Aromatic Heterocycles

ChemInform ◽  
2016 ◽  
Vol 47 (51) ◽  
Author(s):  
David Sucunza ◽  
Ana M. Cuadro ◽  
Julio Alvarez-Builla ◽  
Juan J. Vaquero
Keyword(s):  
Aromatic Heterocycles ◽  
Recent Advances

Recent Advances in the Synthesis of Azonia Aromatic Heterocycles

2016 ◽  
Vol 81 (21) ◽  
pp. 10126-10135 ◽  
Author(s):  
David Sucunza ◽  
Ana M. Cuadro ◽  
Julio Alvarez-Builla ◽  
Juan J. Vaquero
Keyword(s):  
Aromatic Heterocycles ◽  
Recent Advances

ChemInform Abstract: X/π-Interactions in Aromatic Heterocycles: Basic Principles and Recent Advances

ChemInform ◽  
2011 ◽  
Vol 42 (19) ◽  
pp. no-no
Author(s):  
Naoto Hayashi ◽  
Hiroyuki Higuchi ◽  
Keiko Ninomiya
Keyword(s):  
Basic Principles ◽  
Π Interactions ◽  
Aromatic Heterocycles ◽  
Recent Advances

Recent Advances in the Green Synthesis of Heterocycles: From Building Blocks to Biologically Active Compounds

2021 ◽  
Vol 18 ◽  
Author(s):  
Christian Schäfer ◽  
Hyejin Cho ◽  
Bernadett Vlocskó ◽  
Guoshu Xie ◽  
Béla Török
Keyword(s):  
Green Synthesis ◽  
Building Blocks ◽  
Biologically Active Compounds ◽  
Biologically Active ◽  
Environmentally Benign ◽  
Active Compounds ◽  
Aromatic Heterocycles ◽  
High Interest ◽  
Recent Advances ◽  
Benign Synthesis

: Recent advances in the environmentally benign synthesis of common heterocycles are described. This account features three main parts; the preparation of non-aromatic heterocycles, one-ring aromatic heterocycles and their condensed analogs. Due to the great variety of and high interest in these compounds, this work focuses on providing representative examples of the preparation of the target compounds.

A new era for homolytic aromatic substitution: replacing Bu3SnH with efficient light-induced chain reactions

2016 ◽  
Vol 14 (16) ◽  
pp. 3849-3862 ◽  
Author(s):  
Michael Gurry ◽  
Fawaz Aldabbagh
Keyword(s):  
Visible Light ◽  
Photoredox Catalysis ◽  
Aromatic Substitution ◽  
New Era ◽  
Chain Reactions ◽  
Radical Initiator ◽  
Aromatic Heterocycles ◽  
Recent Advances ◽  
Homolytic Aromatic Substitution

Recent advances such as visible-light photoredox catalysis have largely superseded radical initiator-mediated substitutions onto arenes and aromatic heterocycles.

Biocatalytic and Chemo-Enzymatic Approaches for the Synthesis of Heterocycles

Synthesis ◽  
2020 ◽  
Author(s):  
Daniele Castagnolo ◽  
Fei Zhao ◽  
Domiziana Masci ◽  
Elena Tomarelli
Keyword(s):  
Short Review ◽  
Metal Catalysts ◽  
Reaction Conditions ◽  
Aromatic Heterocycles ◽  
Recent Advances ◽  
Aromatic Heterocyclic ◽  
Enzymatic Methods

Heterocycles are ubiquitous structures in nature and can be found in many drugs and chemicals. Biocatalysts, alone or in combination with other metal catalysts, can be exploited for the construction of various heterocyclic rings under mild reaction conditions. This Short Review highlights the recent advances in the development of biocatalytic and chemo-enzymatic methods for the synthesis of both aliphatic and aromatic heterocyclic rings.1 Introduction2 Synthesis of Aliphatic Heterocycles2.1 Piperidines, Pyrrolidines and Piperazines2.2 Other Nitrogen-Containing Aliphatic Heterocycles2.3 Lactones and Lactams2.4 Other Oxygen-Containing Heterocycles3 Synthesis of Aromatic Heterocycles3.1 Pyrroles, Pyridines and Pyrazines3.2 Furans3.3 Bicyclic Aromatic Heterocycles4 Conclusion

Recent Advances in High Dispersion Spectroscopy of Globular Cluster Stars

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.

Chelation-assisted transition metal-catalysed C–H chalcogenylations

2020 ◽  
Vol 7 (8) ◽  
pp. 1022-1060 ◽  
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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