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Relevant academic research and scientific papers

Cross-dehydrogenative Coupling of N-Aryl Tetrahydroisoquinolines Catalyzed by an Anthraquinone-containing Polymeric Photosensitizer

This work reports the photocatalytic application of an anthraquinone-containing polymeric photosensitizer (AQ-PHEMA) in the visible light-induced cross-dehydrogenative-coupling of N-aryl tetrahydroisoquinolines with several nucleophiles, including nitromethane, 1-methyl-2-alkyl ketone and dialkyl (aryl) phosphine oxide. The results revealed that the reaction could be catalyzed by AQ-PHEMA efficiently to afford a series of 1-substituted-2-aryl-1,2,3,4-tetrahydroisoquinolines in good to excellent yields with nice substrate tolerance under aerobic conditions at room temperature. The practical application potential was also showcased by a gram-scale synthesis. More importantly, the utilization of AQ-PHEMA as a heterogeneous photosensitizer also showed nice recyclability and reusability of the catalyst, whereas AQ-PHEMA can be easily separated and reused for at least 8 times without significant loss of photocatalytic activity.

The Photocatalyst-Free Cross-Dehydrogenative Coupling Reaction Enabled by Visible-Light Direct Excitation of Substrate

A new photocatalyst-free strategy for the cross-dehydrogenative C-C and C-P coupling reaction has been described. This protocol provides a concise method to synthesize various 1-substituted tetrahydroisoquinoline (THIQ) derivatives enabled by visible-ligh

Tetrathienoanthracene-functionalized conjugated microporous polymers as an efficient, metal-free visible-light solid organocatalyst for heterogeneous photocatalysis

Owing to their advantages of superior inherent porosity, high chemical stability, light weight, and molecularly tunable optoelectronic properties, conjugated microporous polymers (CMPs) have been receiving increasing attention and research interest as pro

Donor-acceptor type [4+3] covalent organic frameworks: sub-stoichiometric synthesis and photocatalytic application

Three unprecedented 2D [4+3] covalent organic frameworks (TTCOF-1, TTCOF-2, and TTCOF-3) have been prepared by substoichiometric condensation of tetratopic and tritopic monomers, overcoming the limitations of the design rules of conventional topologies. By reticulating the tetraphenylethylene (TPE)-based and triazine-based moieties into COF frameworks, novel electron donor-acceptor (D-A) type structures were obtained. These TTCOFs have good photocatalytic activity in aerobic C(sp3)-H bond functionalization and arylboronic acid oxidation driven by visible light, with yields up to 94%. This can expedite possibilities of COFs with new structural and topological complexities and can also expand the application of COF-based photocatalysis in synthetic chemistry.

Cross-dehydrogenative C(sp3)-C(sp3) coupling: Via C-H activation using magnetically retrievable ruthenium-based photoredox nanocatalyst under aerobic conditions

In the present work, we report the fabrication of a highly versatile ruthenium-based magnetically recoverable photoredox nanocatalyst with a large surface area. This visible light harvesting nanocatalyst was effectively used for cross-dehydrogenative coup

Highly efficient heterogeneous aerobic oxidative C-C coupling from C sp3-H bonds by a magnetic nanoparticle-immobilized bipy-gold(iii) catalyst

A highly efficient heterogeneous cross-dehydrogenative coupling (CDC) of tertiary amines with nitroalkanes and various unmodified ketones was achieved by using a magnetic nanoparticle-immobilized bipy-gold(iii) complex as catalyst and air as the sole oxid

Metal organic frame material used for visible light photocatalysis, and synthetic method and application thereof

The invention discloses a metal organic frame material used for visible light photocatalysis, and a synthetic method and an application thereof. The method comprises the following steps: uniformly mixing two organic ligands H21 and H22 in an N,N-dimethyl formamide (DMF) solvent, adding ZrCl4, and reacting under the control of acetic acid to obtain the metal organic frame material UIO-68Se, wherein a molar ratio of the two organic ligands is 1:1-1:4. The material can be used as a visible light photocatalyst, and catalyzes a cross-coupling reaction of tertiary amine and a nucleophilic reagent in air environment. The photocatalyst based on the metal organic frame material has the advantages of high activity, good circularity, strong stability and easy separation and recovery.

Robust Metal-Organic Framework Containing Benzoselenadiazole for Highly Efficient Aerobic Cross-dehydrogenative Coupling Reactions under Visible Light

A zirconium(IV)-based UiO-topological metal-organic framework (UiO-68Se) containing benzoselenadiazole was synthesized by an approach of the mixed dicarboxylate struts, which show highly efficient and recycalable photocatalytic activity for aerobic cross-dehydrogenative coupling reactions between tertiary amines and various carbon nucleophiles under visible-light irradiation.

Long-lived excited states of zwitterionic copper(I) complexes for photoinduced cross-dehydrogenative coupling reactions

Four heteroleptic copper(I) complexes containing phenanthroline and monoanionic nido-carborane-diphosphine ligands have been prepared and structurally characterized by various spectroscopic techniques and X-ray diffraction. These complexes exhibit intense

Aerobic oxidative Mannich reaction promoted by catalytic amounts of stable radical cation salt

A catalytic amount of triarylaminium salt is demonstrated to be an efficient initiator for oxidative Mannich reaction of tertiary amines and nonactivated ketones under mild neutral conditions. Air is essential for this reaction and acts as a terminal oxid