Gold‐Catalyzed Carboxylative Cyclization Reactions: Recent Advances

2021 ◽  
Author(s):  
Ms. Sayantika Bhakta ◽  
Tapas Ghosh
Keyword(s):  
Cyclization Reactions ◽  
Recent Advances

ChemInform Abstract: Recent Advances in Rhodium-Catalyzed Cyclization Reactions

ChemInform ◽  
2010 ◽  
Vol 33 (52) ◽  
pp. no-no
Author(s):  
Iwao Ojima ◽  
Andrew C. Moralee ◽  
Victor C. Vassar
Keyword(s):  
Cyclization Reactions ◽  
Recent Advances

Indium(III)-Catalyzed Transformations of Alkynes: Recent Advances in Carbo- and Heterocyclization Reactions

Synthesis ◽  
2017 ◽  
Vol 49 (22) ◽  
pp. 4931-4941 ◽  
Author(s):  
Nicklas Selander ◽  
Stalin Pathipati ◽  
Angela van der Werf
Keyword(s):  
Transition Metal ◽  
Environmentally Friendly ◽  
Short Review ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Nucleophilic Additions ◽  
Terminal Alkynes ◽  
Cyclization Reactions ◽  
Recent Advances

The use of a well-chosen catalyst is instrumental for the development of more efficient, economical and environmentally friendly reactions. In recent decades, indium-based catalysts have proven to be competitive and useful alternatives to transition-metal catalysts such as silver and gold. In this short review, we present some of the recent advances in indium(III)-catalyzed transformations of alkynes, with a focus on cyclization reactions.1 Introduction2 Terminal Alkynes as Nucleophiles3 Nucleophilic Additions to Alkynes4 Carbo- and Heterocyclization Reactions4.1 Carbocyclization4.2 Oxygen-Based Heterocycles4.3 Nitrogen-Based Heterocycles4.4 Sulfur-Based Heterocycles5 Conclusion

Diorganyl Dichalcogenides, Copper and Iron Salts: Versatile Cyclization System to Achieve Carbo- and Heterocycles from Alkynes

Synthesis ◽  
2021 ◽  
Author(s):  
Carla Kornowski Jurunic ◽  
Andrei Lucca Belladona ◽  
Ricardo Frederico Schumacher ◽  
Benhur Godoi
Keyword(s):  
Low Cost ◽  
Pharmacological Properties ◽  
Environmental Aspects ◽  
Cyclization Reactions ◽  
Iron Salts ◽  
Recent Advances ◽  
Cyclic Molecules ◽  
Alkyne Derivatives

Organochalcogen-containing cyclic molecules have shown several promising pharmacological properties. Consequently, different synthetic strategies have been developed to their obtaining in the last years. Particularly due to the low cost and environmental aspects, copper and iron-promoted cyclization reactions of alkynyl substrates have been broadly and efficiently applied to this purpose. In this way, this manuscript consists on an overview of the most recent advances in the synthesis of organochalcogen-containing carbo- and heterocycles by reacting diorganyl disulfides, diselenides and ditellurides with alkyne derivatives in the presence of copper and iron salts to promote cyclization reactions.

Recent advances in Pd-catalyzed oxidative couplings in the synthesis/functionalization of cyclic scaffolds using molecular oxygen as the sole oxidant

Synthesis ◽  
2021 ◽  
Author(s):  
Amanda Aline Barboza ◽  
Juliana Arantes Dantas ◽  
Mateus Oliveira Costa ◽  
Attilio Chiavegatti ◽  
Guilherme Augusto de Melo Jardim ◽  
...  
Keyword(s):  
Molecular Oxygen ◽  
Cross Coupling ◽  
Structural Diversity ◽  
Coupling Reactions ◽  
Molecular Scaffolds ◽  
Cyclization Reactions ◽  
Oxidative Cyclizations ◽  
Cross Coupling Reactions ◽  
Recent Advances ◽  
Dehydrogenative Coupling

Over the past years, Pd(II)-catalyzed oxidative couplings enabled the achievement of molecular scaffolds with high structural diversity via C−C, C-N and C-O bond-formation reactions. In contrast to the use of stoichiometric amounts of more common oxidants, such as metal salts (Cu and Ag) and benzoquinone derivatives, the use of molecular oxygen in the direct or indirect regeneration of Pd(II) species presents itself as a more viable alternative in terms of economy and sustainability. In this review, we describe recent advances on the development Pd-catalyzed oxidative cyclizations/functionalizations, where molecular oxygen plays a pivotal role as the sole stoichiometric oxidant. 1 Introduction 2 Oxidative C-C and C-Nu Coupling 2.1 Intramolecular Oxidative C-Nu Heterocyclization Reactions 2.1.1 C-H Activation 2.1.2 Wacker/aza-Wacker Type Cyclization 2.1.3 Tandem Wacker/aza-Wacker and Cyclization/Cross Coupling Reactions 2.2 Intermolecular Oxidative C-Nu Heterocoupling Reactions 2.3 Intramolecular Oxidative (C-C) Carbocyclization Reactions 2.4 Intermolecular Oxidative C-C Coupling Reactions 2.4.1 Cyclization Reactions 2.4.2 Cross-Coupling Reactions 2.4.3 Homo-Coupling Reactions 3 Aerobic Dehydrogenative Coupling/Functionalization 4 Oxidative C-H Functionalization 5 Summary

Recent Applications of α-Carbonyl Sulfoxonium Ylides in Rhodium- and Iridium-Catalyzed C–H Functionalizations

Synlett ◽  
2018 ◽  
Vol 30 (01) ◽  
pp. 21-29 ◽  
Author(s):  
Jiang Cheng ◽  
Xiaopeng Wu ◽  
Song Sun ◽  
Jin-Tao Yu
Keyword(s):  
Cyclization Reactions ◽  
Sulfur Ylides ◽  
Recent Advances

Sulfoxonium ylides are a special type of sulfur ylides that serve as new C1 or C2 synthons recently developed for use in C–H functionalization to access acylmethylated or cyclized compounds through the formation of metal carbene species. Many excellent works have reported the syntheses of various useful skeletons from these versatile synthons. These developments have not previously been completely investigated or reviewed. In this review, we summarize recent advances in the use of α-carbonyl sulfoxonium ylides in C–H functionalizations, including ortho-C–H acylmethylation reactions and ortho-C–H activation/cyclization reactions. Table of Contents 1 Introduction2 Ortho-C–H Acylmethylation Reactions3 Ortho-C–H Activation/Cyclization Reactions3.1 Ortho-C–H Activation/Cyclization of Anilines and Enamines3.2 Ortho-C–H Activation/Cyclization of Azobenzenes3.3 Ortho-C–H Activation/Cyclization of N-Methoxybenzamide3.4 Ortho-C–H Activation/Cyclization of Imines3.5 Ortho-C–H Activation/Cyclization of N-Azoloimines3.6 Ortho-C–H Activation/Cyclization of Benzoylacetonitriles3.7 Ortho-C–H Activation/Cyclization of Benzoyl Sulfoxonium Ylides4 Conclusion

Recent advances in cyclization reactions of unsaturated oxime esters (ethers): synthesis of versatile functionalized nitrogen-containing scaffolds

2020 ◽  
Vol 7 (14) ◽  
pp. 1948-1969 ◽  
Author(s):  
Chen Chen ◽  
Jinghui Zhao ◽  
Xiaonan Shi ◽  
Liying Liu ◽  
Yan-Ping Zhu ◽  
...  
Keyword(s):  
Cyclization Reactions ◽  
Recent Advances

We summarized recent advances in cyclization reactions of unsaturated oxime esters (ethers), which provide diversiform functionalized nitrogen-containing scaffolds.

One-electron oxidative dehydrogenative annulation and cyclization reactions

2020 ◽  
Vol 7 (15) ◽  
pp. 2107-2144 ◽  
Author(s):  
Xiazhen Bao ◽  
Wei Jiang ◽  
Jia Liang ◽  
Congde Huo
Keyword(s):  
Cyclization Reactions ◽  
Recent Advances ◽  
Ring Structures

This review focuses on the recent advances in one-electron oxidation involved oxidative dehydrogenative annulations and cyclizations for the intermolecular and intramolecular construction of valuable ring structures.

Recent advances in cyclization reactions of isatins or thioisatins via C-N or C-S bond cleavage

2021 ◽  
Author(s):  
Jinhui Shen ◽  
Lei Zhang ◽  
Xiangtai Meng
Keyword(s):  
Medicinal Chemistry ◽  
Raw Materials ◽  
Bond Cleavage ◽  
Synthetic Methods ◽  
Cyclization Reactions ◽  
Recent Advances ◽  
Efficient Construction

The exploration of new reactivity modes and synthetic methods has always been an attractive goal of organic and medicinal chemistry. As potential raw materials for the efficient construction of nitrogen-...

scholarly journals Recent Advances in Enzymatic Complexity Generation: Cyclization Reactions

Biochemistry ◽  
2017 ◽  
Vol 57 (22) ◽  
pp. 3087-3104 ◽  
Author(s):  
Christopher T. Walsh ◽  
Yi Tang
Keyword(s):  
Cyclization Reactions ◽  
Recent Advances

Beyond sulfide-centric catalysis: recent advances in the catalytic cyclization reactions of sulfur ylides

2017 ◽  
Vol 46 (14) ◽  
pp. 4135-4149 ◽  
Author(s):  
Liang-Qiu Lu ◽  
Tian-Ren Li ◽  
Qiang Wang ◽  
Wen-Jing Xiao
Keyword(s):  
Cyclization Reactions ◽  
Sulfur Ylides ◽  
Recent Advances ◽  
Catalytic Cyclization ◽  
Sulfur Ylide

This Tutorial Review highlighted recent achievements on the catalytic cyclization reactions of sulfur ylide reagents, especially the asymmetric processes avoiding the use of structurally complex chiral sulfides.

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