Palladium-catalyzed aerobic oxidative cross-coupling of arylhydrazines with terminal alkynes.

Chem Commun (Camb)

Institute of Next Generation Matter Transformation, College of Chemical Engineering at Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, P. R. China.

Published: September 2015


Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

The palladium-catalyzed Sonogashira-type aerobic oxidative coupling of arylhydrazines with terminal alkynes via C-N bond cleavage has been developed; internal alkynes were afforded with a broad substrate scope. This reaction proceeds under copper- and base-free conditions with molecular oxygen as the sole oxidant and nitrogen and water as the only by-products.

Download full-text PDF

Source
http://dx.doi.org/10.1039/c5cc04111bDOI Listing

Publication Analysis

Top Keywords

aerobic oxidative
8
arylhydrazines terminal
8
terminal alkynes
8
palladium-catalyzed aerobic
4
oxidative cross-coupling
4
cross-coupling arylhydrazines
4
alkynes palladium-catalyzed
4
palladium-catalyzed sonogashira-type
4
sonogashira-type aerobic
4
oxidative coupling
4

Similar Publications

Previously published (NMe)[V(O)(μ-O)(pin)], has been shown to aerobically catalyze the oxidation of benzylic and allylic alcohols under mild conditions. Herein, we report syntheses of [V(O)(μ-O)(pin)] trimers, which are also active in OAD catalysis. Trimer formation requires an ammonium cation with at least two hydrogen atoms per cation (e.

View Article and Find Full Text PDF

The nanoscale environment within the void spaces of metal-organic frameworks (MOFs) can significantly influence the photoredox catalytic activity of encapsulated visible-light photoredox catalysts (PCs). To compare two isostructural PC@In-MOF systems, three cationic Ru(II) polypyridine complexes were successfully encapsulated within the mesoscale channels of the anionic framework of InTATB (HTATB = 4,4',4''--triazine-2,4,6-triyltribenzoic acid), which features a doubly interpenetrated framework structure. This encapsulation yielded three heterogenized visible-light PCs, RuL@InTATB, where L = 2,2'-bipyridine (bpy), 1,10-phenanthroline (phen), or 2,2'-bipyrazine (bpz).

View Article and Find Full Text PDF

Electrical pulse stimulation (EPS) represents a useful tool to study exercise-related adaptations of muscle cells in vitro. Here, we examine the metabolic and secretory response of primary human muscle cells from metabolically healthy individuals to the EPS protocol reflecting the episodic nature of real-life exercise training. This intermittent EPS protocol alternates high-frequency stimulation periods with low-frequency resting periods.

View Article and Find Full Text PDF

Dietary intake has an important influence on rates of fuel use during exercise, but the extent to which short-term diet changes affect peak fat oxidation (PFO) and the intensity at which this occurs (Fat) is unknown. This study examined the impact of diet-induced changes in substrate availability on PFO and Fat and the expression of key lipid-regulatory genes and proteins in skeletal muscle. Forty moderately to well-trained males (27 ± 5 years, V̇O 56.

View Article and Find Full Text PDF

Dichloroacetate (DCA), as a pan-inhibitor of pyruvate dehydrogenase kinase, plays a crucial role in energy metabolism and mitochondrial function. DCA decreases lactic acid synthesis, enhances mitochondrial oxidative phosphorylation, and regulates aerobic glycolysis. During the last decade, more and more studies have found that disorders of energy metabolism and mitochondrial dysfunction play a pivotal role in the development and progression of various diseases, and the role of DCA in cancer, metabolic diseases, and inflammatory diseases has been extensively explored in both basic and clinical studies.

View Article and Find Full Text PDF