Thermal-mediated [1,3]-hydrogen transfer as the key step: access to oxindole–chromone hybrid collection with structural diversity

2019 ◽  
Vol 17 (44) ◽  
pp. 9567-9572 ◽  
Author(s):  
Yi Gong ◽  
Sheng-Wen Xu ◽  
Xiong-Wei Liu ◽  
Zheng Li ◽  
Xiong-Li Liu ◽  
...  
Keyword(s):  
Hydrogen Transfer ◽  
Structural Diversity ◽  
Efficient Synthesis

Herein we report the first example of thermal-mediated [1,3]-hydrogen transfer as the key step for the efficient synthesis of oxindole–chromone hybrid collections 2, which avoids additional catalyst and solvent conditions.

Efficient synthesis of quinoxalines from 2-nitroanilines and vicinal diols via a ruthenium-catalyzed hydrogen transfer strategy

2015 ◽  
Vol 17 (1) ◽  
pp. 279-284 ◽  
Author(s):  
Feng Xie ◽  
Min Zhang ◽  
Huanfeng Jiang ◽  
Mengmeng Chen ◽  
Wan Lv ◽  
...  
Keyword(s):  
Hydrogen Transfer ◽  
Efficient Synthesis ◽  
Vicinal Diols

An efficient synthesis of quinoxalines from 2-nitroanilines and biomass-derived vicinal diols is demonstrated via a hydrogen transfer strategy.

ChemInform Abstract: Efficient Synthesis of Quinoxalines from 2-Nitroanilines and Vicinal Diols via a Ruthenium-Catalyzed Hydrogen Transfer Strategy.

ChemInform ◽  
2015 ◽  
Vol 46 (19) ◽  
pp. no-no
Author(s):  
Feng Xie ◽  
Min Zhang ◽  
Huanfeng Jiang ◽  
Mengmeng Chen ◽  
Wan Lv ◽  
...  
Keyword(s):  
Hydrogen Transfer ◽  
Efficient Synthesis ◽  
Vicinal Diols

scholarly journals Asymmetric catalytic synthesis of spirocyclobutyl oxindoles and beyond via [2+2] cycloaddition and sequential transformations

2021 ◽  
Author(s):  
Xia Zhong ◽  
Jiuqi Tan ◽  
Jianglin Qiao ◽  
Yuqiao Zhou ◽  
Cidan Lv ◽  
...  
Keyword(s):  
Drug Discovery ◽  
Small Molecules ◽  
Structural Diversity ◽  
Catalytic Synthesis ◽  
Efficient Synthesis ◽  
Asymmetric Catalytic ◽  
Cyclic Compounds

Asymmetric efficient synthesis of a collection of small molecules with structural diversity is highly important to drug discovery. Herein, three distinct types of chiral cyclic compounds were accessible by enantioselective...

Efficient synthesis of optically pure alcohols by asymmetric hydrogen-transfer biocatalysis: application of engineered enzymes in a 2-propanol–water medium

2011 ◽  
Vol 93 (3) ◽  
pp. 1075-1085 ◽  
Author(s):  
Nobuya Itoh ◽  
Kentaro Isotani ◽  
Masatoshi Nakamura ◽  
Kousuke Inoue ◽  
Yasuhiro Isogai ◽  
...  
Keyword(s):  
Hydrogen Transfer ◽  
Water Medium ◽  
Efficient Synthesis ◽  
Optically Pure ◽  
Optically Pure Alcohols

The synthesis of benzimidazoles via a recycled palladium catalysed hydrogen transfer under mild conditions

2018 ◽  
Vol 16 (12) ◽  
pp. 2088-2096 ◽  
Author(s):  
Qianqian Guan ◽  
Qi Sun ◽  
Lixian Wen ◽  
Zhenggen Zha ◽  
Yu Yang ◽  
...  
Keyword(s):  
Hydrogen Transfer ◽  
Efficient Synthesis ◽  
Mild Conditions ◽  
Palladium Catalyzed

An efficient synthesis of benzimidazoles was developed by virtue of a recycled palladium catalyzed hydrogen transfer.

ChemInform Abstract: Efficient Synthesis of 2,4-Disubstituted Quinolines: Calix[n]arene-Catalyzed Povarov-Hydrogen-Transfer Reaction Cascade.

ChemInform ◽  
2014 ◽  
Vol 45 (51) ◽  
pp. no-no
Author(s):  
Juliana Baptista Simoes ◽  
Angelo de Fatima ◽  
Adao Aparecido Sabino ◽  
Luiz Claudio Almeida Barbosa ◽  
Sergio Antonio Fernandes
Keyword(s):  
Hydrogen Transfer ◽  
Transfer Reaction ◽  
Efficient Synthesis ◽  
Hydrogen Transfer Reaction

Efficient synthesis of 2,4-disubstituted quinolines: calix[n]arene-catalyzed Povarov-hydrogen-transfer reaction cascade

RSC Advances ◽  
2014 ◽  
Vol 4 (36) ◽  
pp. 18612-18615 ◽  
Author(s):  
Juliana Baptista Simões ◽  
Ângelo de Fátima ◽  
Adão Aparecido Sabino ◽  
Luiz Claudio Almeida Barbosa ◽  
Sergio Antonio Fernandes
Keyword(s):  
Hydrogen Transfer ◽  
Transfer Reaction ◽  
Cascade Process ◽  
Efficient Synthesis ◽  
Hydrogen Transfer Reaction ◽  
Povarov Reaction

A new calixarene-catalyzed cascade process, involving Povarov reaction and hydrogen transfer, for the synthesis of 2,4-disubstituted quinolines is described.

Effect of Niacin on Mitochondria of Allium Cepa Root Cells

1967 ◽  
Vol 25 ◽  
pp. 78-79
Author(s):  
M. Arif Hayat
Keyword(s):  
Nicotinamide Adenine Dinucleotide ◽  
Hydrogen Transfer ◽  
Nicotinamide Adenine Dinucleotide Phosphate ◽  
Nicotinamide Adenine ◽  
Root Tips ◽  
Root Cells ◽  
Transfer Processes ◽  
Standard Procedures ◽  
A Cell ◽  
Critical Interest

Although it is recognized that niacin (pyridine-3-carboxylic acid), incorporated as the amide in nicotinamide adenine dinucleotide (NAD) or in nicotinamide adenine dinucleotide phosphate (NADP), is a cofactor in hydrogen transfer in numerous enzyme reactions in all organisms studied, virtually no information is available on the effect of this vitamin on a cell at the submicroscopic level. Since mitochondria act as sites for many hydrogen transfer processes, the possible response of mitochondria to niacin treatment is, therefore, of critical interest.Onion bulbs were placed on vials filled with double distilled water in the dark at 25°C. After two days the bulbs and newly developed root system were transferred to vials containing 0.1% niacin. Root tips were collected at ¼, ½, 1, 2, 4, and 8 hr. intervals after treatment. The tissues were fixed in glutaraldehyde-OsO4 as well as in 2% KMnO4 according to standard procedures. In both cases, the tissues were dehydrated in an acetone series and embedded in Reynolds' lead citrate for 3-10 minutes.

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