Magnetically Recyclable Heterogeneous Cobalt Ferrite Catalyst for the Direct N‐Alkylation of (Hetero)aryl Amines with Alcohols

2021 ◽  
Vol 6 (33) ◽  
pp. 8766-8773
Author(s):  
Uttam Kumar Panigrahi ◽  
Venugopal T. Bhat ◽  
Vengadesh Kumara Mangalam Ramakrishnan
Keyword(s):  
Cobalt Ferrite ◽  
Aryl Amines

Radical Capture at Ni(II) Complexes: C-C, C-N, and C-O Bond Formation

2019 ◽  
Author(s):  
Abolghasem (Gus) Bakhoda ◽  
Stefan Wiese ◽  
Christine Greene ◽  
Bryan C. Figula ◽  
Jeffery A. Bertke ◽  
...  
Keyword(s):  
Functional Groups ◽  
Bond Formation ◽  
Dft Studies ◽  
Bond Forming ◽  
Aryl Amines ◽  
Shed Light ◽  
Competing Pathways

<p>The dinuclear b-diketiminato Ni<sup>II</sup><i>tert</i>-butoxide {[Me<sub>3</sub>NN]Ni}<sub>2</sub>(<i>μ</i>-O<i><sup>t</sup></i>Bu)<sub>2 </sub>(<b>2</b>), synthesized from [Me<sub>3</sub>NN]Ni(2,4-lutidine) (<b>1</b>) and di-<i>tert</i>-butylperoxide, is a versatile precursor for the synthesis of a series of Ni<sup>II</sup>complexes [Me<sub>3</sub>NN]Ni-FG to illustrate C-C, C-N, and C-O bond formation at Ni<sup>II </sup>via radicals. {[Me<sub>3</sub>NN]Ni}<sub>2</sub>(<i>μ</i>-O<i><sup>t</sup></i>Bu)<sub>2 </sub>reacts with nitromethane, alkyl and aryl amines, acetophenone, benzamide, ammonia and phenols to deliver corresponding mono- or dinuclear [Me<sub>3</sub>NN]Ni-FG species (FG = O<sub>2</sub>NCH<sub>2</sub>, R-NH, ArNH, PhC(O)NH, PhC(O)CH<sub>2</sub>, NH<sub>2</sub>and OAr). Many of these Ni<sup>II </sup>complexes are capable of capturing the benzylic radical PhCH(•)CH<sub>3 </sub>to deliver corresponding PhCH(FG)CH<sub>3 </sub>products featuring C-C, C-N or C-O bonds. DFT studies shed light on the mechanism of these transformations and suggest two competing pathways that depend on the nature of the functional groups. These radical capture reactions at [Ni<sup>II</sup>]-FG complexes outline key C-C, C-N, and C-O bond forming steps and suggest new families of nickel radical relay catalysts.</p>

Fabrication of the Cobalt Ferrite/Modified Sodium Bismuth Titanate 0-3 Multiferroic Composites via Diffusion-blocking

2011 ◽  
Vol 26 (5) ◽  
pp. 486-490 ◽  
Author(s):  
Quan-Wei HAN ◽  
Kun LI ◽  
Song PENG ◽  
Yu WANG ◽  
Helen Lai-Wa CHAN
Keyword(s):  
Cobalt Ferrite ◽  
Bismuth Titanate ◽  
Sodium Bismuth Titanate

Copper(ii) triflate catalyzed three-component reaction for the synthesis of 2,3-diarylquinoline derivatives using aryl amines, aryl aldehydes and styrene oxides

2021 ◽  
Vol 19 (14) ◽  
pp. 3255-3262
Author(s):  
Saghir Ali ◽  
Abu T. Khan
Keyword(s):  
Aryl Aldehydes ◽  
Three Component Reaction ◽  
Aryl Amines

An efficient and expedient synthetic protocol is reported for the synthesis of 2,3-diarylquinoline derivatives from readily available aryl amines, aryl aldehydes and styrene oxides using 10 mol% copper(ii) triflate by employing three-component reaction.

Copper‐Catalyzed Cyclization of Aryl Amines and Aryldiazonium Salts under Air: Access to N ‐2‐Aryl‐Naphthotriazoles

2019 ◽  
Vol 361 (22) ◽  
pp. 5149-5159 ◽  
Author(s):  
Chuanle Zhu ◽  
Hao Zeng ◽  
Fulin Chen ◽  
Chi Liu ◽  
Huanfeng Jiang
Keyword(s):  
Aryl Amines
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