Embedding multiple site-specific functionalities into polymer chains via nitrone-mediated radical coupling reactions

2011 ◽  
Vol 49 (10) ◽  
pp. 2118-2126 ◽  
Author(s):  
Edgar H. H. Wong ◽  
Martina H. Stenzel ◽  
Thomas Junkers ◽  
Christopher Barner-Kowollik
Keyword(s):  
Polymer Chains ◽  
Coupling Reactions ◽  
Multiple Site ◽  
Site Specific ◽  
Radical Coupling

Altering the effectiveness of radical traps in atom transfer radical coupling reactions of polymer chains

Polymer ◽  
2017 ◽  
Vol 127 ◽  
pp. 66-76 ◽  
Author(s):  
Jessica P. Wu ◽  
Ching W. Pan ◽  
Katherine E. Heiler ◽  
Megan E. Ching ◽  
Eric S. Tillman
Keyword(s):  
Polymer Chains ◽  
Atom Transfer ◽  
Coupling Reactions ◽  
Radical Coupling ◽  
Radical Traps

Room-Temperature, Water-Promoted, Radical-Coupling Reactions of Phenols with tert-Butyl Nitrite

Synlett ◽  
2017 ◽  
Vol 28 (16) ◽  
pp. 2153-2156 ◽  
Author(s):  
Wen-Ting Wei ◽  
Hongze Liang ◽  
Wen-Ming Zhu ◽  
Weida Liang ◽  
Yi Wu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Phenol Derivative ◽  
Tert Butyl ◽  
Radical Coupling ◽  
Air Atmosphere ◽  
Cross Coupling Reaction ◽  
Temperature Water

A radical–radical cross-coupling reaction of phenols with tert-butyl nitrite has been developed with the use of water as an additive. This method allows the construction of C–N bonds under an air atmosphere at room temperature, providing the ortho-nitrated phenol derivative in moderate to good yields.

Via Radical Coupling Reactions

2003 ◽  
pp. 1
Author(s):  
E. P. Kündig ◽  
S. H. Pache
Keyword(s):  
Coupling Reactions ◽  
Radical Coupling

scholarly journals Radical coupling reactions of piceatannol and monolignols: A density functional theory study

2019 ◽  
Vol 164 ◽  
pp. 12-23 ◽  
Author(s):  
Thomas Elder ◽  
José Carlos del Río ◽  
John Ralph ◽  
Jorge Rencoret ◽  
Hoon Kim ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Coupling Reactions ◽  
Density Functional Theory Study ◽  
Functional Theory ◽  
Radical Coupling

Recent Developments in Transition-Metal-Free Functionalization and Derivatization Reactions of Pyridines

Synlett ◽  
2020 ◽  
Author(s):  
Lei Jiao ◽  
Fei-Yu Zhou
Keyword(s):  
Transition Metal ◽  
Structural Motif ◽  
Metal Exchange ◽  
Coupling Reactions ◽  
Phosphonium Salts ◽  
Metal Free ◽  
Radical Coupling ◽  
In Situ Activation ◽  
Recent Developments

AbstractPyridine is an important structural motif that is prevalent in natural products, drugs, and materials. Methods that functionalize and derivatize pyridines have gained significant attention. Recently, a large number of transition-metal-free reactions have been developed. In this review, we provide a brief summary of recent advances in transition-metal-free functionalization and derivatization reactions of pyridines, categorized according to their reaction modes.1 Introduction2 Metalated Pyridines as Nucleophiles2.1 Deprotonation2.2 Halogen–Metal exchange3 Activated Pyridines as Electrophiles3.1 Asymmetric 2-Allylation by Chiral Phosphite Catalysis3.2 Activation of Pyridines by a Bifunctional Activating Group3.3 Alkylation of Pyridines by 1,2-Migration3.4 Alkylation of Pyridines by [3+2] Addition3.5 Pyridine Derivatization by Catalytic In Situ Activation Strategies3.6 Reactions via Heterocyclic Phosphonium Salts4 Radical Reactions for Pyridine Functionalization4.1 Pyridine Functionalization through Radical Addition Reactions4.2 Pyridine Functionalization through Radical–Radical Coupling Reactions5 Derivatization of Pyridines through the Formation of Meisenheimer-Type Pyridyl Anions6 Conclusion

scholarly journals Bismuth Amides Mediate Facile and Highly Selective Pn–Pn Radical Coupling Reactions (Pn = N, P, As)

2020 ◽  
Author(s):  
Kai Oberdorf ◽  
Anna Hanft ◽  
Jacqueline Ramler ◽  
Ivo Krummenacher ◽  
Matthias Bickelhaupt ◽  
...  
Keyword(s):  
Coupling Reactions ◽  
Radical Coupling

Recent Advances in Photocatalytic C–N Bond Coupling Reactions

Synthesis ◽  
2020 ◽  
Author(s):  
Wing-Yiu Yu ◽  
Chun-Ming Chan ◽  
Yip-Chi Chow
Keyword(s):  
Carbonyl Compounds ◽  
Bond Formation ◽  
Coupling Reactions ◽  
Amino Groups ◽  
Cyclization Reactions ◽  
Radical Coupling ◽  
Synthetic Intermediates ◽  
Photocatalytic Reactions ◽  
Metal Catalyzed ◽  
Pharmaceutical Agents

Catalytic C–N bond formation is one of the major research topics in synthetic chemistry owing to the ubiquity of amino groups in natural products, synthetic intermediates and pharmaceutical agents. In parallel with well-established metal-catalyzed C–N bond coupling protocols, photocatalytic reactions have recently emerged as efficient and selective alternatives for the construction of C–N bonds. In this review, the progress made on photocatalytic C–N bond coupling reactions between 2012 and February 2020 is summarized.1 Introduction1.1 General Mechanisms for Photoredox Catalysis1.2 Pioneering Work2 C(sp2)–N Bond Formation2.1 Protocols Involving an External Oxidant2.2 Oxidant-Free Protocols3 C(sp3)–N Bond Formation3.1 Direct Radical–Radical Coupling3.2 Addition Reactions to Alkenes3.3 Reductive Amination of Carbonyl Compounds3.4 Decarboxylative Amination4 Cyclization Reactions4.1 C(sp2)–N Heterocycle Formation4.2 C(sp3)–N Heterocycle Formation5 Other Examples6 Conclusion and Outlook

Radical Coupling Reactions in Lignin Synthesis: A Density Functional Theory Study

2012 ◽  
Vol 116 (16) ◽  
pp. 4760-4768 ◽  
Author(s):  
Amandeep K. Sangha ◽  
Jerry M. Parks ◽  
Robert F. Standaert ◽  
Angela Ziebell ◽  
Mark Davis ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Coupling Reactions ◽  
Density Functional Theory Study ◽  
Functional Theory ◽  
Radical Coupling ◽  
Lignin Synthesis
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