Unraveling the Crucial Role of Metal-Free Catalysis in Borazine and Polyborazylene Formation in Transition-Metal-Catalyzed Ammonia–Borane Dehydrogenation

ACS Catalysis ◽  
2015 ◽  
Vol 5 (6) ◽  
pp. 3478-3493 ◽  
Author(s):  
Sourav Bhunya ◽  
Paul M. Zimmerman ◽  
Ankan Paul
Keyword(s):  
Transition Metal ◽  
Crucial Role ◽  
Ammonia Borane ◽  
Metal Free ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

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.

scholarly journals Trifluoromethanesulfonyl Azide as a Bifunctional Reagent for Metal-Free Azidotrifluoromethylation of Unactivated Alkenes

2021 ◽  
Author(s):  
Honggui Huang ◽  
Weishuang Li ◽  
Dayou Zhong ◽  
Hu-Chong Wang ◽  
Jing Zhao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Drug Development ◽  
Organic Synthesis ◽  
Metal Free ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Vicinal trifluoromethyl azides have widespread applications in organic synthesis and drug development. However, their preparation is generally limited to transition-metal-catalyzed three-component reactions. We report a simple and metal-free method that...

A metal-free method for facile synthesis of indanones via intramolecular hydroacylation of 2-vinylbenzaldehydes

2021 ◽  
Author(s):  
Guoxue He ◽  
Jinyu Ma ◽  
Jianhui Zhou ◽  
Chunpu Li ◽  
Hong Liu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Environmentally Benign ◽  
Facile Synthesis ◽  
Metal Free ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

A facile method access to indanones was developed under metal- and additive-free conditions in which L-proline served as efficient and environmentally benign catalysts. Compared with previous indanones synthesis by transition-metal-catalyzed...

Recent Advances in Direct C–H Functionalization of Pyrimidines

Synthesis ◽  
2017 ◽  
Vol 50 (02) ◽  
pp. 193-210 ◽  
Author(s):  
Egor Verbitskiy ◽  
Gennady Rusinov ◽  
Oleg Chupakhin ◽  
Valery Charushin
Keyword(s):  
Transition Metal ◽  
Pyrimidine Derivatives ◽  
Metal Free ◽  
Recent Advances ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Data spanning the period 2000–2017 on the direct C–H functionalization of pyrimidines are collected and discussed in this review. This demonstrates the surge of interest and creativity that this field of chemistry has experienced during the last two decades. Plausible applications of highly functionalized pyrimidines are also discussed.1 Introduction2 Transition-Metal-Catalyzed C–H Functionalization of Pyrimidine Derivatives3 Transition-Metal-Free Direct C–H Functionalization of Pyrimidine Derivatives4 Deprotonative Metalation of Pyrimidine Derivatives5 Conclusions

scholarly journals Non-Classical Anionic Naked N-Heterocyclic Carbenes: Fundamental Properties and Emerging Applications in Synthesis and Catalysis

Catalysts ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 620 ◽  
Author(s):  
Mei Leow ◽  
Curtis Ho ◽  
Michael Gardiner ◽  
Alex Bissember
Keyword(s):  
Transition Metal ◽  
Heterocyclic Carbenes ◽  
Molecular Scaffolds ◽  
Ongoing Research ◽  
Fundamental Properties ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Ongoing research exploring the chemistry of N-heterocyclic carbenes (NHCs) has led to the development and discovery of new NHC subclasses that deviate beyond Arduengo’s prototypical N,N′-disubstituted imidazol-2-ylidene-based structures. These systems continue to enable and extend the fundamental role of NHC ligands in synthesis and catalysis. In this regard, the advent of protic NHCs has garnered particular interest. This derives in part from their applications to the selective preparation of unique molecular scaffolds and their unprecedented bifunctional reactivity, which can be exploited in transition metal-catalyzed processes. In comparison, the synthetic applications of closely related anionic naked NHCs remain rather underexplored. With this in mind, this review highlights the interesting fundamental properties of non-classical anionic naked NHCs, and focuses on their emerging applications in synthesis and catalysis.

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