Copper-Catalyzed C(sp2)-C(sp3) Cross-Dehydrogenative Coupling of Quinones with Cyclic Alkanes: One-Step Access to Parvaquone and its Analogs

2016 ◽  
Vol 5 (9) ◽  
pp. 1134-1141 ◽  
Author(s):  
Ek Raj Baral ◽  
Sung Hong Kim ◽  
Yong Rok Lee
Keyword(s):  
Dehydrogenative Coupling ◽  
Cyclic Alkanes ◽  
One Step

Ruthenium-catalyzed synthesis of N-substituted lactams by acceptorless dehydrogenative coupling of diols with primary amines

2019 ◽  
Vol 55 (82) ◽  
pp. 12384-12387 ◽  
Author(s):  
Yanling Zheng ◽  
Xufeng Nie ◽  
Yang Long ◽  
Li Ji ◽  
Haiyan Fu ◽  
...  
Keyword(s):  
Phosphine Ligand ◽  
Primary Amines ◽  
Dehydrogenative Coupling ◽  
One Step

The first synthesis of N-substituted lactams via an acceptorless dehydrogenative coupling of diols with primary amines in one step was enabled by combining Ru3(CO)12 with a hybrid N-heterocyclic carbene–phosphine–phosphine ligand as the catalyst.

Dehydrogenative coupling promoted by copper catalysts: a way to optimise and upgrade bio-alcohols

2017 ◽  
Vol 7 (6) ◽  
pp. 1386-1393 ◽  
Author(s):  
Nicola Scotti ◽  
Federica Zaccheria ◽  
Claudio Evangelisti ◽  
Rinaldo Psaro ◽  
Nicoletta Ravasio
Keyword(s):  
Copper Catalysts ◽  
One Pot ◽  
Excellent Yield ◽  
Dehydrogenative Coupling ◽  
One Step

A one-pot one-step transformation of butanol into butyl butanoate takes place with excellent yield on a Cu/ZrO2 catalyst.

A nickel catalyzed acceptorless dehydrogenative approach to quinolines

2018 ◽  
Vol 16 (2) ◽  
pp. 274-284 ◽  
Author(s):  
Seuli Parua ◽  
Rina Sikari ◽  
Suman Sinha ◽  
Siuli Das ◽  
Gargi Chakraborty ◽  
...  
Keyword(s):  
Nickel Catalyst ◽  
Environmentally Benign ◽  
Secondary Alcohols ◽  
Quinoline Derivatives ◽  
Dehydrogenative Coupling ◽  
Earth Abundant ◽  
One Step ◽  
Macrocyclic Nickel

A general, efficient and environmentally benign, one-step synthesis of substituted quinoline derivatives was achieved by acceptorless dehydrogenative coupling of o-aminobenzylalcohols with ketones and secondary alcohols catalyzed by a cheap, earth abundant and easy to prepare macrocyclic nickel catalyst [Ni(MeTAA)].

scholarly journals Cross-Dehydrogenative coupling reaction and arylation of quinoxalin-2(1H)-ones under iodide/peroxide system condition

SynOpen ◽  
2021 ◽  
Author(s):  
Yujuan Wu ◽  
Xianglong Chu ◽  
Di Yang ◽  
chen ma ◽  
Caixia Xie
Keyword(s):  
Functional Group ◽  
Coupling Reaction ◽  
Simple Method ◽  
Metal Free ◽  
Radical Initiator ◽  
Dehydrogenative Coupling ◽  
One Step

A simple method has been developed for the synthesis of 3-(2-oxo-2-phenylethylidene)-3,4-dihydroquinoxalin-2(1H)-one and 3-aryl-quinoxalin-2(1H)-one derivatives through C-H activation of quinoxalin-2(1H)-ones by peroxides and iodide. In this protocol, the peroxide (TBPB) serves as both the radical initiator and aryl source, realizing arylation of quinoxalin-2(1H)-one in a one-step reaction. The methodology has the advantages of being a metal-free strategy and having broad functional group tolerance.

Allylic C–H Alkynylation via Copper-Photocatalyzed Cross-Dehydrogenative Coupling

Synthesis ◽  
2019 ◽  
Vol 52 (04) ◽  
pp. 529-536 ◽  
Author(s):  
Ahmad A. Almasalma ◽  
Esteban Mejía
Keyword(s):  
Reaction Mechanism ◽  
Room Temperature ◽  
Dehydrogenative Coupling ◽  
Different Types ◽  
One Step

An efficient, novel photocatalyzed allylic-alkynylation methodology via copper-based cross-dehydrogenative coupling (CDC) is described. Different types of 1,4-enyne compounds were synthesized in one step at room temperature using copper(I) terpyridyl complex as photocatalyst/initiator. This procedure is an improvement and to some extent complementary to previously reported thermal CDC methods. Preliminary investigations on the reaction mechanism are also presented.

scholarly journals Dehydrogenative Coupling of Methanol for the Gas-Phase, One-Step Synthesis of Dimethoxymethane over Supported Copper Catalysts

2020 ◽  
Vol 8 (32) ◽  
pp. 12151-12160
Author(s):  
Anh The To ◽  
Trenton J. Wilke ◽  
Eric Nelson ◽  
Connor P. Nash ◽  
Andrew Bartling ◽  
...  
Keyword(s):  
Gas Phase ◽  
Copper Catalysts ◽  
Dehydrogenative Coupling ◽  
One Step ◽  
Supported Copper Catalysts

An Interactive Minicomputer Program for the Indexing and Simulation of Electron Diffraction Patterns

1976 ◽  
Vol 34 ◽  
pp. 542-543
Author(s):  
R.P. Goehner ◽  
W.T. Hatfield ◽  
Prakash Rao
Keyword(s):  
Electron Diffraction ◽  
Real Time ◽  
Pattern Analysis ◽  
Flow Diagram ◽  
Hard Copy ◽  
Time Analysis ◽  
Real Time Analysis ◽  
Transmission Electron ◽  
One Step ◽  
Diffraction Patterns

Computer programs are now available in various laboratories for the indexing and simulation of transmission electron diffraction patterns. Although these programs address themselves to the solution of various aspects of the indexing and simulation process, the ultimate goal is to perform real time diffraction pattern analysis directly off of the imaging screen of the transmission electron microscope. The program to be described in this paper represents one step prior to real time analysis. It involves the combination of two programs, described in an earlier paper(l), into a single program for use on an interactive basis with a minicomputer. In our case, the minicomputer is an INTERDATA 70 equipped with a Tektronix 4010-1 graphical display terminal and hard copy unit.A simplified flow diagram of the combined program, written in Fortran IV, is shown in Figure 1. It consists of two programs INDEX and TEDP which index and simulate electron diffraction patterns respectively. The user has the option of choosing either the indexing or simulating aspects of the combined program.

Nutrient-regulated gene expression in eukaryotes

2006 ◽  
Vol 73 ◽  
pp. 85-96 ◽  
Author(s):  
Richard J. Reece ◽  
Laila Beynon ◽  
Stacey Holden ◽  
Amanda D. Hughes ◽  
Karine Rébora ◽  
...  
Keyword(s):  
Gene Expression ◽  
Rna Polymerase ◽  
Rna Polymerase Ii ◽  
Transcriptional Control ◽  
Direct Interaction ◽  
Signalling Pathways ◽  
A Cell ◽  
One Step ◽  
Higher Eukaryotes ◽  
Regulated Gene Expression

The recognition of changes in environmental conditions, and the ability to adapt to these changes, is essential for the viability of cells. There are numerous well characterized systems by which the presence or absence of an individual metabolite may be recognized by a cell. However, the recognition of a metabolite is just one step in a process that often results in changes in the expression of whole sets of genes required to respond to that metabolite. In higher eukaryotes, the signalling pathway between metabolite recognition and transcriptional control can be complex. Recent evidence from the relatively simple eukaryote yeast suggests that complex signalling pathways may be circumvented through the direct interaction between individual metabolites and regulators of RNA polymerase II-mediated transcription. Biochemical and structural analyses are beginning to unravel these elegant genetic control elements.

CAD: One Step Forward, One Step Back

2010 ◽  
Vol 43 (18) ◽  
pp. 16
Author(s):  
MATTHEW R.G. TAYLOR
Keyword(s):  
One Step
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