Direct Synthesis of Fluorescent Oxazolo-phenoxazines by Copper-Catalyzed/Hypervalent Iodine(III)-Mediated Dimerization/Cyclization of 2-Benzylamino-phenols

2022 ◽  
Author(s):  
Camilla Loro ◽  
Letizia Molteni ◽  
Marta Papis ◽  
Egle M. Beccalli ◽  
Donatella Nava ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Hypervalent Iodine

scholarly journals PIDA-mediated intramolecular oxidative C–N bond formation for the direct synthesis of quinoxalines from enaminones

RSC Advances ◽  
2019 ◽  
Vol 9 (14) ◽  
pp. 7718-7722 ◽  
Author(s):  
Hong Zhang ◽  
Jinhai Shen ◽  
Zhenhui Yang ◽  
Xiuling Cui
Keyword(s):  
Direct Synthesis ◽  
Bond Formation ◽  
Hypervalent Iodine ◽  
Mild Conditions

An expedient hypervalent iodine(iii)-mediated approach to obtain substituted quinoxalines from readily available enaminones has been developed under mild conditions.

scholarly journals Straightforward Strategies for the Preparation of NH-Sulfox­imines: A Serendipitous Story

Synlett ◽  
2017 ◽  
Vol 28 (19) ◽  
pp. 2525-2538 ◽  
Author(s):  
James Bull ◽  
Renzo Luisi ◽  
Leonardo Degennaro
Keyword(s):  
Transition Metal ◽  
Physicochemical Properties ◽  
Direct Synthesis ◽  
Transition Metal Catalysts ◽  
Hypervalent Iodine ◽  
Reaction Conditions ◽  
One Pot ◽  
Metal Free ◽  
Recent Developments ◽  
New Procedures

Sulfoximines are emerging as valuable new isosteres for use in medicinal chemistry, with the potential to modulate physicochemical properties. Recent developments in synthetic strategies have made the unprotected ‘free’ NH-sulfoximine group more readily available, facilitating further study. This account reviews approaches to NH-sulfoximines, with a focus on our contribution to the field. Starting from the development of catalytic strategies involving transition metals, more sustainable metal-free processes have been discovered. In particular, the use of hypervalent iodine reagents to mediate NH-transfer to sulfoxides is described, along with an assessment of the substrate scope. Furthermore, a one-pot strategy to convert sulfides directly into NH-sulfoximines is discussed, with N- and O-transfer occurring under the reaction conditions. Mechanistic evidence for the new procedures is included as well as relevant synthetic applications that further exemplify the potential of these approaches.1 Introduction2 Strategies to Form NH-Sulfoximines Involving Transition-Metal Catalysts3 Metal-Free Strategies to Prepare NH-Sulfoximines4 Mechanistic Evidence for the Direct Synthesis of NH-Sulfoximines from Sulfoxides and Sulfides5 Further Applications6 Conclusion

Hypervalent iodine oxidation of trimethylsilyl enol ethers of ketones: A direct synthesis of α-keto triflates

1989 ◽  
Vol 30 (6) ◽  
pp. 667-670 ◽  
Author(s):  
Robert M. Moriarty ◽  
W. Ruwan Epa ◽  
Raju Penmasta ◽  
Alok K. Awasthi
Keyword(s):  
Direct Synthesis ◽  
Hypervalent Iodine ◽  
Enol Ethers

Employing exchange reactions involving hypervalent iodine compounds for the direct synthesis of azide-containing linear and branched polymers

2014 ◽  
Vol 5 (12) ◽  
pp. 4599-4609 ◽  
Author(s):  
Hongzhang Han ◽  
Nicolay V. Tsarevsky
Keyword(s):  
Ligand Exchange ◽  
Direct Synthesis ◽  
Branched Polymers ◽  
Hypervalent Iodine ◽  
Exchange Reactions ◽  
One Pot ◽  
Iodine Compounds

Azide-containing polymers were prepared by one-pot polymerizations initiated by azide radicals produced by ligand exchange reactions involving hypervalent iodine(iii) compounds.

A Novel and Direct Synthesis of Alkylated 2,2′-Bithiophene Derivatives Using a Combination of Hypervalent Iodine(III) Reagent and BF3×Et2O.

ChemInform ◽  
2003 ◽  
Vol 34 (38) ◽  
Author(s):  
Hirofumi Tohma ◽  
Minako Iwata ◽  
Tomohiro Maegawa ◽  
Yorito Kiyono ◽  
Akinobu Maruyama ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Hypervalent Iodine

Three-component direct synthesis of substituted pyrroles from easily accessible chemical moieties using hypervalent iodine reagent

2013 ◽  
Vol 54 (23) ◽  
pp. 3019-3021 ◽  
Author(s):  
Nikhil C. Jadhav ◽  
Prashant B. Jagadhane ◽  
Hemlata V. Patile ◽  
Vikas N. Telvekar
Keyword(s):  
Direct Synthesis ◽  
Hypervalent Iodine ◽  
Substituted Pyrroles
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