scholarly journals Heterometallic complexes, tandem catalysis and catalytic cooperativity

2014 ◽  
Vol 5 (5) ◽  
pp. 1723-1732 ◽  
Author(s):  
José A. Mata ◽  
F. Ekkehardt Hahn ◽  
Eduardo Peris
Keyword(s):  
Heterometallic Complexes ◽  
Tandem Reactions ◽  
Tandem Catalysis ◽  
Catalytic Cooperativity

N-heterocyclic carbene-based heterometallic complexes have emerged as useful multicatalysts for tandem reactions.

ChemInform Abstract: Heterometallic Complexes, Tandem Catalysis and Catalytic Cooperativity

ChemInform ◽  
2014 ◽  
Vol 45 (26) ◽  
pp. no-no
Author(s):  
Jose A. Mata ◽  
F. Ekkehardt Hahn ◽  
Eduardo Peris
Keyword(s):  
Heterometallic Complexes ◽  
Tandem Catalysis ◽  
Catalytic Cooperativity

scholarly journals Tandem Catalysis: Synthesis of Nitrogen-Containing Heterocycles

Catalysts ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 631 ◽  
Author(s):  
Joana F. Campos ◽  
Sabine Berteina-Raboin
Keyword(s):  
Medicinal Chemistry ◽  
Nitrogen Heterocycles ◽  
Tandem Reactions ◽  
Tandem Catalysis

In this Review, we consider all the publications since the beginning of the century that describe tandem reactions resulting in the formation of five-membered aromatic nitrogen heterocycles (thiazole, imidazole, indole, tetrazole, triazole, and isoxazole). The contents of this review are organized by taxonomy and type of tandem catalysis. It covers orthogonal, auto-, and assisted tandem catalysis, providing an overview of tandem reactions applied tonitrogen heterocycles reported in the literature up to March 2020. We believe that this compilation of data will provide a necessary starting reference to developthe applications of tandem catalysis in medicinal chemistry.

scholarly journals Pd-catalyzed Auto-Tandem Cascades Based on N-Sulfonylhydrazones: Hetero- and Carbocyclization Processes

Synthesis ◽  
2017 ◽  
Vol 28 (19) ◽  
pp. 4434-4447 ◽  
Author(s):  
Carlos Valdés ◽  
Raquel Barroso ◽  
María Cabal
Keyword(s):  
Molecular Diversity ◽  
Short Review ◽  
Tandem Reactions ◽  
Tandem Catalysis ◽  
Bond Forming ◽  
Organic Halides ◽  
Bond Forming Reactions ◽  
Cascade Processes ◽  
Linear Molecules ◽  
Tandem Cascades

The Pd-catalyzed cross-coupling between N-tosylhydrazones and organic halides is a powerful method for the creation of C–C bonds. This transformation has been included recently in cascade processes in which the same catalyst promotes various independent catalytic steps, a process known as auto-tandem catalysis. This strategy proves to be very useful for the construction of relatively complex carbo- and heterocyclic structures, as well as for the generation of molecular diversity. This short review will cover the different Pd-catalyzed auto-tandem reactions­ involving N-tosylhydrazones organized by the bond-forming sequence: C–C/C–N and C–C/C–C. Some examples of related tandem reactions leading to acyclic compounds are also highlighted.1 Introduction2 Auto-Tandem C–C/C–N Bond-Forming Reactions3 Auto-Tandem C–C/C–C Bond-Forming Reactions4 Tandem Reactions for the Synthesis of Linear Molecules5 Summary and Outlook

Efficient construction of diverse 3-cyanoindoles under novel tandem catalysis

2020 ◽  
Vol 56 (83) ◽  
pp. 12660-12663
Author(s):  
Jun Wu ◽  
Jiabin Liu ◽  
Kerui Zhou ◽  
Zhenni He ◽  
Qian Wang ◽  
...  
Keyword(s):  
Tandem Reactions ◽  
Tandem Catalysis ◽  
Rapid Construction ◽  
Palladium Catalyzed ◽  
Efficient Construction

A novel and rapid construction of 3-cyanoindoles by palladium-catalyzed tandem reactions has been developed.

Enabling Selective Tandem Reactions via Catalyst Architecture Engineering

2020 ◽  
Vol 2 (10) ◽  
pp. 929-941
Author(s):  
Hong Je Cho ◽  
Bingjun Xu
Keyword(s):  
Tandem Reactions

scholarly journals Lactone Synthesis by Enantioselective Orthogonal Tandem Catalysis

2019 ◽  
Vol 131 (28) ◽  
pp. 9585-9590
Author(s):  
Sourabh Mishra ◽  
Aaron Aponick
Keyword(s):  
Tandem Catalysis ◽  
Lactone Synthesis

Enantioselective Synthesis of Chromanones through Organocatalytic Tandem Reactions

2020 ◽  
Vol 362 (23) ◽  
pp. 5524-5528
Author(s):  
Mengxue Lu ◽  
Xin Wang ◽  
Zongli Xiong ◽  
Jingxiang Duan ◽  
Wen Ren ◽  
...  
Keyword(s):  
Enantioselective Synthesis ◽  
Tandem Reactions

scholarly journals Plastic waste to fuels by hydrocracking at mild conditions

2021 ◽  
Vol 7 (17) ◽  
pp. eabf8283
Author(s):  
Sibao Liu ◽  
Pavel A. Kots ◽  
Brandon C. Vance ◽  
Andrew Danielson ◽  
Dionisios G. Vlachos
Keyword(s):  
Direct Method ◽  
Acid Sites ◽  
Liquid Fuels ◽  
High Yield ◽  
Tandem Catalysis ◽  
Hy Zeolite ◽  
Environmental Threat ◽  
Single Use ◽  
Initial Activation ◽  
A Direct Method

Single-use plastics impose an enormous environmental threat, but their recycling, especially of polyolefins, has been proven challenging. We report a direct method to selectively convert polyolefins to branched, liquid fuels including diesel, jet, and gasoline-range hydrocarbons, with high yield up to 85% over Pt/WO3/ZrO2 and HY zeolite in hydrogen at temperatures as low as 225°C. The process proceeds via tandem catalysis with initial activation of the polymer primarily over Pt, with subsequent cracking over the acid sites of WO3/ZrO2 and HY zeolite, isomerization over WO3/ZrO2 sites, and hydrogenation of olefin intermediates over Pt. The process can be tuned to convert different common plastic wastes, including low- and high-density polyethylene, polypropylene, polystyrene, everyday polyethylene bottles and bags, and composite plastics to desirable fuels and light lubricants.

Boron insertion into alkyl ether bonds via zinc/nickel tandem catalysis

Science ◽  
2021 ◽  
Vol 372 (6538) ◽  
pp. 175-182
Author(s):  
Hairong Lyu ◽  
Ilia Kevlishvili ◽  
Xuan Yu ◽  
Peng Liu ◽  
Guangbin Dong
Keyword(s):  
Nickel Catalyst ◽  
Bioactive Compounds ◽  
Cyclic Ethers ◽  
Alkyl Ether ◽  
Tandem Catalysis ◽  
Mechanistic Studies ◽  
Alkyl Ethers ◽  
Nitrogen Substitution ◽  
Zinc Nickel

Mild methods to cleave the carbon-oxygen (C−O) bond in alkyl ethers could simplify chemical syntheses through the elaboration of these robust, readily available precursors. Here we report that dibromoboranes react with alkyl ethers in the presence of a nickel catalyst and zinc reductant to insert boron into the C−O bond. Subsequent reactivity can effect oxygen-to-nitrogen substitution or one-carbon homologation of cyclic ethers and more broadly streamline preparation of bioactive compounds. Mechanistic studies reveal a cleavage-then-rebound pathway via zinc/nickel tandem catalysis.

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