Zirconium Catalyzed or Mediated Regioselective C–C Bond Formation Reactions of α,β-Unsaturated Acetals

1994 ◽  
Vol 23 (2) ◽  
pp. 259-262 ◽  
Author(s):  
Tamotsu Takahashi ◽  
Denis Y. Kondakov ◽  
Noriyuki Suzuki
Keyword(s):  
Bond Formation ◽  
Bond Formation Reactions

Recent Advances on C-Se Bond-forming Reactions at Low and Room Temperature

2020 ◽  
Vol 23 (28) ◽  
pp. 3206-3225 ◽  
Author(s):  
Amol D. Sonawane ◽  
Mamoru Koketsu
Keyword(s):  
Room Temperature ◽  
Bond Formation ◽  
Bond Forming ◽  
Material Chemistry ◽  
Recent Advances ◽  
Bond Forming Reactions ◽  
Bond Formation Reactions

: Over the last decades, many methods have been reported for the synthesis of selenium- heterocyclic scaffolds because of their interesting reactivities and applications in the medicinal as well as in the material chemistry. This review describes the recent numerous useful methodologies on C-Se bond formation reactions which were basically carried out at low and room temperature.

Synthesis of Drugs and Biorelevant N-heterocycles Employing Recent Advances in C-N Bond Formation

2020 ◽  
Vol 24 (20) ◽  
pp. 2293-2340
Author(s):  
Firdoos Ahmad Sofi ◽  
Prasad V. Bharatam
Keyword(s):  
Kinase Inhibitors ◽  
Bond Formation ◽  
Comprehensive Review ◽  
Biologically Relevant ◽  
Lead Compounds ◽  
Heterocyclic Molecules ◽  
The Past ◽  
Anti Cancer ◽  
Modern Methods ◽  
Bond Formation Reactions

C-N bond formation is a particularly important step in the generation of many biologically relevant heterocyclic molecules. Several methods have been reported for this purpose over the past few decades. Well-known named reactions like Ullmann-Goldberg coupling, Buchwald-Hartwig coupling and Chan-Lam coupling are associated with the C-N bond formation reactions. Several reviews covering this topic have already been published. However, no comprehensive review covering the synthesis of drugs/ lead compounds using the C-N bond formation reactions was reported. In this review, we cover many modern methods of the C-N bond formation reactions, with special emphasis on metal-free and green chemistry methods. We also report specific strategies adopted for the synthesis of drugs, which involve the C-N bond formation reactions. Examples include anti-cancer, antidepressant, anti-inflammatory, anti-atherosclerotic, anti-histaminic, antibiotics, antibacterial, anti-rheumatic, antiepileptic and anti-diabetic agents. Many recently developed lead compounds generated using the C-N bond formation reactions are also covered in this review. Examples include MAP kinase inhibitors, TRKs inhibitors, Polo-like Kinase inhibitors and MPS1 inhibitors.

Bismuth(iii)dichalcogenones as highly active catalysts in multiple C–C bond formation reactions

2016 ◽  
Vol 45 (12) ◽  
pp. 5196-5209 ◽  
Author(s):  
Katam Srinivas ◽  
Arruri Sathyanarayana ◽  
Chatla Naga Babu ◽  
Ganesan Prabusankar
Keyword(s):  
Bond Formation ◽  
Structural Motifs ◽  
Highly Active ◽  
Bond Formation Reactions

Thirteen new bismuth(iii) dichalcogenone derivatives with diversified structural motifs were successfully isolated and used as potential catalysts for the synthesis of triaryl- or triheteroarylmethanes.

scholarly journals Role of C, S, Se and P donor ligands in copper(i) mediated C–N and C–Si bond formation reactions

RSC Advances ◽  
2018 ◽  
Vol 8 (56) ◽  
pp. 32269-32282 ◽  
Author(s):  
Katam Srinivas ◽  
Ganesan Prabusankar
Keyword(s):  
Comparative Study ◽  
Bond Formation ◽  
Donor Ligands ◽  
Bond Formation Reactions

The first comparative study of C, S, Se and P donor ligands-supported copper(i) complexes for C–N and C–Si bond formation reactions.

Thiolate–palladium(iv) or sulfonium–palladate(0)? A theoretical study on the mechanism of palladium-catalyzed C–S bond formation reactions

2017 ◽  
Vol 4 (6) ◽  
pp. 943-950 ◽  
Author(s):  
Dongdong Xu ◽  
Xiaotian Qi ◽  
Meng Duan ◽  
Zhaoyuan Yu ◽  
Lei Zhu ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Bond Formation ◽  
Oxidative Addition ◽  
Palladium Catalyzed ◽  
Catalytic Cycles ◽  
Bond Formation Reactions

Thiolate–palladium(iv) intermediates are generated through oxidative addition in our suggested mechanisms, and are the key intermediates in these catalytic cycles.

Double C–H Activation for the C–C bond Formation Reactions

2018 ◽  
Vol 15 (7) ◽  
pp. 882-903 ◽  
Author(s):  
Jialin Liu ◽  
Xiaoyu Xiong ◽  
Jie Chen ◽  
Yuntao Wang ◽  
Ranran Zhu ◽  
...  
Keyword(s):  
Molecular Design ◽  
Bond Cleavage ◽  
Bond Formation ◽  
Hypervalent Iodine ◽  
Coupling Reactions ◽  
Bond Forming ◽  
Direct Functionalization ◽  
Catalyzed Reactions ◽  
Medium Ring ◽  
Bond Formation Reactions

Background: Among the numerous bond-forming patterns, C–C bond formation is one of the most useful tools for building molecules for the chemical industry as well as life sciences. Recently, one of the most challenging topics is the study of the direct coupling reactions via multiple C–H bond cleavage/activation processes. A number of excellent reviews on modern C–H direct functionalization have been reported by Bergman, Bercaw, Yu and others in recent years. Among the large number of available methodologies, Pdcatalyzed reactions and hypervalent iodine reagent mediated reactions represent the most popular metal and non-metal involved transformations. However, the comprehensive summary of the comparison of metal and non-metal mediated transformations is still not available. Objective: The review focuses on comparing these two types of reactions (Pd-catalyzed reactions and hypervalent iodine reagent mediated reactions) based on the ways of forming new C–C bonds, as well as the scope and limitations on the demonstration of their synthetic applications. Conclusion: Comparing the Pd-catalyzed strategies and hypervalent iodine reagent mediated methodologies for the direct C–C bond formation from activation of C-H bonds, we clearly noticed that both strategies are powerful tools for directly obtaining the corresponding pruducts. On one hand, the hypervalent iodine reagents mediated reactions are normally under mild conditions and give the molecular diversity without the presence of transition-metal, while the Pd-catalyzed approaches have a broader scope for the wide synthetic applications. On the other hand, unlike Pd-catalyzed C-C bond formation reactions, the study towards hypervalent iodine reagent mediated methodology mainly focused on the stoichiometric amount of hypervalent iodine reagent, while few catalytic reactions have been reported. Meanwhile, hypervalent iodine strategy has been proved to be more efficient in intramolecular medium-ring construction, while there are less successful examples on C(sp3)–C(sp3) bond formation. In summary, we have demonstrated a number of selected approaches for the formation of a new C–C bond under the utilization of Pd-catalyzed reaction conditions or hyperiodine reagents. The direct activations of sp2 or sp3 hybridized C–H bonds are believed to be important strategies for the future molecular design as well as useful chemical entity synthesis.

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