scholarly journals Oxidative Generation of Boron-Centered Radicals in Carboranes

2020 ◽  
Vol 142 (10) ◽  
pp. 4586-4591 ◽  
Author(s):  
Harrison A. Mills ◽  
Joshua L. Martin ◽  
Arnold L. Rheingold ◽  
Alexander M. Spokoyny
Keyword(s):  
Oxidative Generation

Chemoselective oxidative generation of ortho-quinone methides and tandem transformations

2020 ◽  
Vol 12 (4) ◽  
pp. 353-362 ◽  
Author(s):  
Muhammet Uyanik ◽  
Kohei Nishioka ◽  
Ryutaro Kondo ◽  
Kazuaki Ishihara
Keyword(s):  
Quinone Methides ◽  
Oxidative Generation

scholarly journals Oxidative Generation of Boron-Centered Radicals in Carboranes

2019 ◽  
Author(s):  
Harrison A. Mills ◽  
Joshua Martin ◽  
Arnold L. Rheingold ◽  
Alexander Spokoyny
Keyword(s):  
Direct Oxidation ◽  
Radical Species ◽  
Boron Cluster ◽  
Radical Intermediates ◽  
Substitution Chemistry ◽  
Indirect Observation ◽  
Electronic Environments ◽  
Oxidative Generation

<div><div><div><p>We report the first indirect observation and use of boron vertex-centered carboranyl radicals generated by the oxidation of modified carboranyl precursors. These radical intermediates are formed by the direct oxidation of a B−B bond between a boron cluster cage and an exopolyhedral boron-based substituent (e.g., −BF3K, −B(OH)2). The in situ generated radical species are shown to be competent substrates in reactions with oxygen-based radicals, dichalcogenides, and N-heterocycles, yielding the corresponding substituted carboranes containing B−O, B−S, B−Se, B−Te, and B−C bonds. Remarkably, this chemistry tolerates various electronic environments, providing access to facile substitution chemistry at both electron-rich and electron-poor B−H vertices in carboranes.</p></div></div></div>

ChemInform Abstract: Novel Oxidative Generation of Ammonium Ylides and the Subsequent Silicon Polonovski Reaction.

ChemInform ◽  
2008 ◽  
Vol 39 (33) ◽  
Author(s):  
Kiyoshi Honda ◽  
Hiromasa Shibuya ◽  
Yujiro Hoshino ◽  
Seiichi Inoue
Keyword(s):  
Oxidative Generation

scholarly journals Copper-Catalyzed Amination of Vinyl Azides to α-Ketoamides

SynOpen ◽  
2019 ◽  
Vol 03 (04) ◽  
pp. 91-95
Author(s):  
Yu Wang ◽  
Dongling Zhang ◽  
Kaining Zhang ◽  
Zhenhua Liu ◽  
Jing Lin ◽  
...  
Keyword(s):  
Benzoic Acid ◽  
Catalytic System ◽  
Functional Group ◽  
Efficient Approach ◽  
Broad Scope ◽  
Vinyl Azides ◽  
Oxidative Generation

An efficient approach for the amination of vinyl azides with N,N-dialkylacylamides has been developed. By using this protocol, structurally important α-ketoamides can be easily synthesized. The key to success is not only the introduction of a Cu(I)/oxygen catalytic system but also the utilization of t-BuOCl and benzoic acid as additives. The reaction is operationally simple, scalable, and displays broad scope and functional group tolerance. A possible mechanism involving copper-catalyzed oxidative generation of peroxide radicals is proposed.

Higher-carbon sugars by enzymatic chain extension oxidative generation of aldol precursors in situ

1994 ◽  
Vol 35 (48) ◽  
pp. 9013-9016 ◽  
Author(s):  
Oliver Eyrisch ◽  
Manfred Keller ◽  
Wolf-Dieter Fessner
Keyword(s):  
Chain Extension ◽  
Oxidative Generation
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