ChemInform Abstract: CONTROLLING FACTORS IN HOMOGENEOUS TRANSITION METAL CATALYSIS. CONTROL OF METAL-CATALYZED REACTIONS. PART XII

1981 ◽  
Vol 12 (1) ◽  
Author(s):  
P. HEIMBACH ◽  
H. SCHENKLUHN
Keyword(s):  
Transition Metal ◽  
Controlling Factors ◽  
Transition Metal Catalysis ◽  
Metal Catalysis ◽  
Catalyzed Reactions ◽  
Metal Catalyzed

Recent development of synthetic preparation methods for guanidines via transition metal catalysis

2015 ◽  
Vol 51 (2) ◽  
pp. 254-265 ◽  
Author(s):  
Wen-Xiong Zhang ◽  
Ling Xu ◽  
Zhenfeng Xi
Keyword(s):  
Transition Metal ◽  
Transition Metal Catalysis ◽  
Preparation Methods ◽  
Metal Catalysis ◽  
Transition Metal Catalyzed ◽  
Catalyzed Reactions ◽  
Metal Catalyzed

This article provides an overview of guanidine synthesis via transition-metal-catalyzed reactions including cycloaddition, guanylation and tandem guanylation/cyclization.

Potassium tris(triflyl)methide (KCTf3): a broadly applicable promoter for cationic metal catalysis

2015 ◽  
Vol 51 (72) ◽  
pp. 13740-13743 ◽  
Author(s):  
Junbin Han ◽  
Zhichao Lu ◽  
Weibo Wang ◽  
Gerald B. Hammond ◽  
Bo Xu
Keyword(s):  
Transition Metal ◽  
Lewis Acid ◽  
Acid Catalysis ◽  
Wide Spectrum ◽  
Reaction Rates ◽  
Transition Metal Catalysis ◽  
Neutral Salt ◽  
Metal Catalysis ◽  
Catalyzed Reactions ◽  
Metal Catalyzed

KCTf3 enhanced the reaction rates and the chemical yields of a wide spectrum of cationic metal catalyzed reactions in consistent and significant manner. These reactions include traditional Lewis acid catalysis and transition metal catalysis. KCTf3 is an easily handled neutral salt that is commercially available.

Peptide macrocyclization by transition metal catalysis

2020 ◽  
Vol 49 (7) ◽  
pp. 2039-2059 ◽  
Author(s):  
Daniel G. Rivera ◽  
Gerardo M. Ojeda-Carralero ◽  
Leslie Reguera ◽  
Erik V. Van der Eycken
Keyword(s):  
Transition Metal ◽  
Transition Metal Catalysis ◽  
Metal Catalysis ◽  
Conformational Constraints ◽  
Transition Metal Catalyzed ◽  
Catalyzed Reactions ◽  
Metal Catalyzed

Peptide macrocyclization continues expanding with the development of novel transition metal-catalyzed reactions capable of both introducing conformational constraints and generating diversity at the ring-closing moiety.

The C–H functionalization of N-alkoxycarbamoyl indoles by transition metal catalysis

2021 ◽  
Vol 19 (37) ◽  
pp. 7949-7969
Author(s):  
Prasanjit Ghosh ◽  
Sajal Das
Keyword(s):  
Natural Products ◽  
Transition Metal ◽  
Transition Metal Catalysis ◽  
Metal Catalysis ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Indole and its congeners are ubiquitous nitrogen containing organic scaffolds found in a plethora of natural products. This review aims to highlight the transition-metal catalyzed C–H functionalization of N-alkoxycarbamoyl indoles.

scholarly journals Recent Developments in Transition-Metal Catalyzed Direct C–H Alkenylation, Alkylation, and Alkynylation of Azoles

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 4970
Author(s):  
Su Chen ◽  
Prabhat Ranjan ◽  
Leonid G. Voskressensky ◽  
Erik V. Van der Eycken ◽  
Upendra K. Sharma
Keyword(s):  
Transition Metal ◽  
Transition Metal Catalysis ◽  
Significant Progress ◽  
Metal Catalysis ◽  
Bond Functionalization ◽  
Recent Advances ◽  
Regioselective Alkylation ◽  
Recent Developments ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

The transition metal-catalyzed C–H bond functionalization of azoles has emerged as one of the most important strategies to decorate these biologically important scaffolds. Despite significant progress in the C–H functionalization of various heteroarenes, the regioselective alkylation and alkenylation of azoles are still arduous transformations in many cases. This review covers recent advances in the direct C–H alkenylation, alkylation and alkynylation of azoles utilizing transition metal-catalysis. Moreover, the limitations of different strategies, chemoselectivity and regioselectivity issues will be discussed in this review.

Transition metal-catalyzed direct nucleophilic addition of C–H bonds to carbon–heteroatom double bonds

2014 ◽  
Vol 5 (6) ◽  
pp. 2146-2159 ◽  
Author(s):  
Xi-Sha Zhang ◽  
Kang Chen ◽  
Zhang-Jie Shi
Keyword(s):  
Transition Metal ◽  
Nucleophilic Addition ◽  
Transition Metal Catalysis ◽  
Grignard Reaction ◽  
Double Bonds ◽  
Metal Catalysis ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Compared with the traditional Grignard reaction, direct insertion of polar double bonds to C–H bonds via transition-metal catalysis is ideal from the viewpoint of atom-, step- and cost-economy and the avoidance of the waste emission, as well as of the complex manipulation of sensitive reagents.

Transition-metal-catalyzed nucleophilic dearomatization of electron-deficient heteroarenes

Synthesis ◽  
2021 ◽  
Author(s):  
Jie Jia ◽  
Fangdong Hu ◽  
Ying Xia
Keyword(s):  
Transition Metal ◽  
Asymmetric Catalysis ◽  
Short Review ◽  
Transition Metal Catalysis ◽  
Powerful Method ◽  
Metal Catalysis ◽  
Unique Method ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Transition-metal-catalyzed nucleophilic dearomatization of electron-deficient heteroarenes, such as pyridines, quinolines, isoquinolines and nitroindoles, has become a powerful method for the access of unsaturated heterocycles in recent decades. This short review summarizes nucleophilic dearomatization of electron-deficient heteroarenes with carbon- and heteroatom-based nucleophiles via transition-metal catalysis. A great number of functionalized heterocycles were obtained in this transformation. Importantly, many of these reactions were carried out in an enantioselective manner by means of asymmetric catalysis, providing a unique method for the construction of enantioenriched heterocycles. 1 Introduction 2 Transition-metal-catalyzed nucleophilic dearomatization of heteroarenes via alkynylation 3 Transition-metal-catalyzed nucleophilic dearomatization of heteroarenes via arylation 4 Transition-metal-catalyzed nucleophilic dearomatization of heteroarenes with other nucleophiles 5 Transition-metal-catalyzed nucleophilic dearomatization with nucleophiles formed in situ 6 Conclusion and outlook

5 Metal-Catalyzed C—H Activation

2022 ◽  
Author(s):  
Y.-K. Xing ◽  
P. Fang ◽  
Z.-H. Wang ◽  
T.-S. Mei
Keyword(s):  
Transition Metal ◽  
Recent Progress ◽  
Environmentally Friendly ◽  
Transition Metal Catalysis ◽  
Metal Catalysis ◽  
Bond Forming ◽  
Organic Electrochemistry ◽  
Metal Catalyzed ◽  
Environmentally Friendly Approach ◽  
Made In

Synthetic organic electrochemistry is currently experiencing a renaissance, the merger of electrochemistry with transition-metal-catalyzed C—H activation would provide not only an environmentally friendly approach, but also offer new opportunities that conventional transition-metal catalysis may not have achieved. In this chapter, we summarize the recent progress made in catalytic C—H activation reactions using organometallic electrochemistry, including C—C, C—O, C—N, C—halogen, and C—P bond-forming reactions.

Transition Metal-Catalyzed Enantioselective α-Arylation of Carbonyl Compounds to Give Tertiary Stereocenters

Synthesis ◽  
2021 ◽  
Author(s):  
Manuel Orlandi ◽  
Margarita Escudero-Casao ◽  
Giulia Licini
Keyword(s):  
Natural Products ◽  
Transition Metal ◽  
Carbonyl Group ◽  
Carbonyl Compounds ◽  
Short Review ◽  
Transition Metal Catalysis ◽  
Biologically Active ◽  
Metal Catalysis ◽  
Quaternary Stereocenters ◽  
Metal Catalyzed

Enantioenriched α-aryl carbonyl compounds are ubiquitous in natural products and biologically active compounds. Their synthesis has been explored over the last few decades and several methods now exist that allow for the enantioselective formation of a C(sp3)-C(sp2) bond in α-position to a carbonyl group. However, although the formation of quaternary stereocenters has been fairly well established, the enantioselective formation of tertiary stereocenters proved more challenging due to facile product post-reaction racemization. In this short review, we summarize the methods reported so far for the asymmetric α-arylation of enolates and analogues that rely on transition metal catalysis.

Reactivity-Controlling Factors in Carboxylate-Assisted C–H Activation under 4d and 3d Transition Metal Catalysis

ACS Catalysis ◽  
2020 ◽  
Vol 10 (18) ◽  
pp. 10551-10558 ◽  
Author(s):  
Torben Rogge ◽  
João C. A. Oliveira ◽  
Rositha Kuniyil ◽  
Lianrui Hu ◽  
Lutz Ackermann
Keyword(s):  
Transition Metal ◽  
Controlling Factors ◽  
Transition Metal Catalysis ◽  
Metal Catalysis
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