Transition Metal‐Catalyzed and Metal‐Free Cyclization Reactions of Alkynes with Nitrogen‐Containing Substrates: Synthesis of Pyrrole Derivatives

ChemCatChem ◽  
2020 ◽  
Vol 12 (13) ◽  
pp. 3335-3408 ◽  
Author(s):  
Jose S. S. Neto ◽  
Gilson Zeni
Keyword(s):  
Transition Metal ◽  
Cyclization Reactions ◽  
Pyrrole Derivatives ◽  
Metal Free ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

scholarly journals New cyclization reactions in organic syntheses

2002 ◽  
Vol 74 (1) ◽  
pp. 159-166 ◽  
Author(s):  
Iwao Ojima
Keyword(s):  
Amino Acids ◽  
Transition Metal ◽  
Total Synthesis ◽  
Cyclization Reactions ◽  
Organic Syntheses ◽  
Carbocyclic Compounds ◽  
Efficient Construction ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Recent development in the transition metal-catalyzed cyclization reactions for organic syntheses in the author's laboratories is summarized, which includes (i) novel silylcarbocyclizations (SiCaCs) and carbonylative carbotricyclizations, (ii) intramolecular silylformylations and desymmerization of siloxydiynes by sequential double silylformylation, (iii) efficient total synthesis of (+)-prosopinine, (iv) enantioselective desymmetrization of aminodienes, and (iv) new and efficient routes to 1-azabicyclo[x.y.0]alkane amino acids. All these processes are catalyzed by Rh or Rh­Co complexes, and useful for rapid and efficient construction of a variety of heterocyclic and carbocyclic compounds. Mechanisms of these new carbocyclization and cyclohydrocarbonylation reactions are also discussed.

Transition Metal Catalyzed Enantioselective Borylative Cyclization Reactions

2020 ◽  
Author(s):  
Yuqi Ji ◽  
Min Zhang ◽  
Mimi Xing ◽  
Huanhuan Cui ◽  
Qian Zhao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Cyclization Reactions ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Radical Strategy for the Transition-Metal-Catalyzed Synthesis of γ-Lactones: A Review

Synthesis ◽  
2020 ◽  
Vol 52 (24) ◽  
pp. 3855-3865
Author(s):  
Ren-Jie Song ◽  
Bin Wei ◽  
Ke-Wei Li ◽  
Yan-Chen Wu ◽  
Shi-Qi Tong
Keyword(s):  
Natural Products ◽  
Transition Metal ◽  
Recent Progress ◽  
Food Additives ◽  
Radical Cyclization ◽  
Biological Molecules ◽  
Cyclization Reactions ◽  
Unsaturated Carboxylic Acids ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

The γ-lactone skeleton is very important component of various natural products, biological molecules, food additives, and perfumes. As a result, much effort has been made towards such compounds. In this review, we summarize recent progress in transition-metal-catalyzed annulation reactions for the formation of γ-lactone derivatives through a radical pathway. Various reagents, such as anhydrides, Togni’s reagent, TMSN3, arenesulfonyl chlorides, arenediazonium salts, dibenzoyl peroxides, O-benzoylhydroxylamine, NFSI, and α-halocarboxylic compounds, used in radical cyclization reactions are described, and the mechanisms of these radical annulation reactions are also discussed.1 Introduction2 Annulations of Alkenes with Anhydrides3 Annulations of Unsaturated Carboxylic Acids with Nucleophiles4 Annulations of Alkenes with α-Halocarboxylic Compounds5 Conclusions and Outlook

Formal nucleophilic borylation and borylative cyclization of organic halides

2017 ◽  
Vol 15 (2) ◽  
pp. 285-300 ◽  
Author(s):  
K. Kubota ◽  
H. Iwamoto ◽  
H. Ito
Keyword(s):  
Transition Metal ◽  
Metal Free ◽  
Recent Advances ◽  
Organic Halides ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Recent advances in borylations of organic halides, including both transition-metal-catalyzed and metal-free methods are summarized. Borylative cyclization is also discussed.

Sign in / Sign up

Export Citation Format

Share Document