Copper-catalyzed rapid C–H nitration of 8-aminoquinolines by using sodium nitrite as the nitro source under mild conditions

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89979-89983 ◽  
Author(s):  
Xiaolei Zhu ◽  
Li Qiao ◽  
Pingping Ye ◽  
Beibei Ying ◽  
Jun Xu ◽  
...  
Keyword(s):  
Sodium Nitrite ◽  
Single Electron ◽  
Mild Conditions ◽  
Electron Process

We report the first example of copper(ii) catalyzed remote C–H nitration of 8-aminoquinoline amides by using sodium nitrite as nitration reagent under mild conditions in 1 minute which undergoes single electron process.

scholarly journals Ni/Co-Catalyzed Homo-Coupling of Alkyl Tosylates

Molecules ◽  
2019 ◽  
Vol 24 (8) ◽  
pp. 1458 ◽  
Author(s):  
Kimihiro Komeyama ◽  
Ryusuke Tsunemitsu ◽  
Takuya Michiyuki ◽  
Hiroto Yoshida ◽  
Itaru Osaka
Keyword(s):  
Electron Transfer ◽  
Oxidative Addition ◽  
Alkyl Halides ◽  
Cobalt Catalysts ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Mild Conditions

A direct reductive homo-coupling of alkyl tosylates has been developed by employing a combination of nickel and nucleophilic cobalt catalysts. A single-electron-transfer-type oxidative addition is a pivotal process in the well-established nickel-catalyzed coupling of alkyl halides. However, the method cannot be applied to the homo-coupling of ubiquitous alkyl tosylates due to the high-lying σ*(C–O) orbital of the tosylates. This paper describes a Ni/Co-catalyzed protocol for the activation of alkyl tosylates on the construction of alkyl dimers under mild conditions.

Theory of Detection of X-Rays by Superconductors

1997 ◽  
Vol 11 (19) ◽  
pp. 849-859 ◽  
Author(s):  
N. Murali Krishna ◽  
Lydia S. Lingam ◽  
Keshav N. Shrivastava
Keyword(s):  
Low Temperatures ◽  
Cooper Pair ◽  
Single Electron ◽  
Superconducting Film ◽  
Pair Breaking ◽  
X Rays ◽  
X Ray ◽  
Electron Process

Two new processes occur in a superconducting film when it is used as a detector of X-rays. One of these processes is the scattering of the X-ray by a single electron which gives rise to the broadening of the X-ray line. Another process describes the breaking of a Cooper pair by the X-ray which also contributes to the width of the X-ray. The line arising from the single electron process depends on T4 whereas that arising from the pair breaking process varies almost as T6 at low temperatures. Lines occur at ℏωq ± 2Δ, and at ℏωq where ℏωq is the energy of the X-ray and 2Δ is the gap of the superconductor.

scholarly journals Iron(III)-Catalyzed Highly Regioselective Halogenation of 8-Amidoquinolines in Water

Molecules ◽  
2019 ◽  
Vol 24 (3) ◽  
pp. 535 ◽  
Author(s):  
Yang Long ◽  
Lei Pan ◽  
Xiangge Zhou
Keyword(s):  
Electron Transfer ◽  
Reaction Mechanism ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Mild Conditions ◽  
Simple Protocol

A simple protocol of iron(III)-catalyzed halogenation of 8-amidoquinolines in water under mild conditions was developed, affording the 5-halogenlated products in good to excellent yields up to 98%. The reaction mechanism most likely involves a single-electron transfer (SET) process.

Iron-Promoted Decarboxylation of Arylacetic Acids for the Synthesis of Aromatic Nitriles with Sodium Nitrite as the Nitrogen Source

Synlett ◽  
2020 ◽  
Vol 31 (18) ◽  
pp. 1805-1808 ◽  
Author(s):  
Zhenpeng Shen ◽  
Wenbo Liu ◽  
Xinzhe Tian ◽  
Yun-Lai Ren ◽  
Zhe Zhao
Keyword(s):  
Nitrogen Source ◽  
Functional Groups ◽  
Sodium Nitrite ◽  
Aromatic Nitriles ◽  
Mild Conditions ◽  
Arylacetic Acids

AbstractA new and effective method was developed for the synthesis of aromatic nitriles from arylacetic acids by using NaNO2 as the nitrogen source and Fe(OTf)3 as the promoter at 50 °C. A series of arylacetic acids underwent this transformation to give the targeted products in yields of 51–90%. Because of the mild conditions, the reaction is compatible with a broad range of functional groups, including ester, carboxy, hydroxy, acetamido, halo, nitro, cyano, methoxy, and even highly reactive formyl groups.

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