Recent Advances in Lewis Base‐Catalysed Chemo‐, Diastereo‐ and Enantiodivergent Reactions of Electron‐deficient Olefins and Alkynes

2021 ◽  
Author(s):  
Yinggao Meng ◽  
Lihui Chen ◽  
Er‐Qing Li
Keyword(s):  
Lewis Base ◽  
Recent Advances

Recent Advances in Lewis Base-Catalyzed, Stereoselective Tandem Aldol b- and g-Lactonizations

Heterocycles ◽  
2008 ◽  
Vol 76 (2) ◽  
pp. 949 ◽  
Author(s):  
Daniel Romo ◽  
Vikram C. Purohit ◽  
Andrea S. Matla
Keyword(s):  
Lewis Base ◽  
Recent Advances

ChemInform Abstract: Recent Advances in Lewis Base-Catalyzed, Stereoselective, Tandem Aldol β- and γ-Lactonizations

ChemInform ◽  
2009 ◽  
Vol 40 (14) ◽  
Author(s):  
Vikram C. Purohit ◽  
Andrea S. Matla ◽  
Daniel Romo
Keyword(s):  
Lewis Base ◽  
Recent Advances

A theoretical review for novel Lewis base amine/imine-catalyzed reactions

2020 ◽  
Vol 18 (35) ◽  
pp. 6781-6800
Author(s):  
Qianqian Deng ◽  
Fangjing Mu ◽  
Yan Qiao ◽  
Donghui Wei
Keyword(s):  
Lewis Base ◽  
Recent Advances ◽  
Catalyzed Reactions ◽  
First Time

Recent advances in computational investigations of Lewis base amine/imine-catalyzed reactions have been systematically summarized and reviewed for the first time.

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.

Nucleosome dynamics

2006 ◽  
Vol 73 ◽  
pp. 109-119 ◽  
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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