Recent advances of 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) in photocatalytic transformations

Chemical Communications, Journal Year: 2019, Volume and Issue: 55(38), P. 5408 - 5419

Published: Jan. 1, 2019

In this review, the recent advances of application 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) as a photoredox catalyst in past three years (2016–2018) for various organic reactions are summarized.

Language: Английский

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Sustainable routes for quantitative green selenocyanation of activated alkynes

Chinese Chemical Letters, Journal Year: 2019, Volume and Issue: 30(6), P. 1237 - 1240

Published: April 16, 2019

Language: Английский

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Photocatalyst-Free Regioselective C–H Thiocyanation of 4-Anilinocoumarins under Visible Light

ACS Sustainable Chemistry & Engineering, Journal Year: 2019, Volume and Issue: 7(16), P. 14009 - 14015

Published: Aug. 2, 2019

In the present study, we describe successful development of a novel and efficient C(sp2)–H thiocyanation reaction electron-rich heteroarenes arenes with readily available ammonium thiocyanate under visible light exposure. Most importantly, proceeded smoothly without addition any photocatalyst or strong oxidant, ultimately minimizing production chemical waste. The advantages this met requirements green sustainable synthetic chemistry may be widely used in organic synthesis pharmaceutical chemistry.

Language: Английский

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Clean Preparation of Quinolin-2-yl Substituted Ureas in Water

ACS Sustainable Chemistry & Engineering, Journal Year: 2019, Volume and Issue: 7(7), P. 7193 - 7199

Published: March 8, 2019

An environmentally-friendly method for the clean preparation of various quinolin-2-yl substituted ureas in water under mild and toxic reagent-, base-, organic solvent-free conditions was established. In large-scale synthesis, products could be rapidly collected via simple filtration washing with ethanol. The usage readily available raw materials, 100% atom economy, high yield, excellent regioselectivity enhanced practicability this protocol.

Language: Английский

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A combination of heterogeneous catalysis and photocatalysis for the olefination of quinoxalin-2(1H)-ones with ketones in water: a green and efficient route to (Z)-enaminones

Green Chemistry, Journal Year: 2021, Volume and Issue: 23(5), P. 2123 - 2129

Published: Jan. 1, 2021

This study describes a novel aqueous reaction for the synthesis of (Z)-enaminones through combination heterogeneous catalysis and photocatalysis.

Language: Английский

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Energy-transfer photocatalysis for Minisci C–H (amino)alkylation of heteroarenes using oxime esters as dual-role reagents

Organic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(18), P. 5122 - 5129

Published: Jan. 1, 2024

This study demonstrates a strategy involving photoinduced energy transfer for decarboxylative Minisci C–H (amino)alkylation of heteroarenes employing diverse oxime esters (from carboxylic acids) as (amino)alkylating reagents.

Language: Английский

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Visible Light‐Initiated Catalyst‐Free One‐Pot, Multicomponent Construction of 5‐Substituted Indole Chromeno[2,3‐b]pyridines

Advanced Synthesis & Catalysis, Journal Year: 2019, Volume and Issue: 361(22), P. 5182 - 5190

Published: Sept. 26, 2019

Abstract A visible light‐initiated pseudo four‐component reaction of salicylaldehydes, indole and malononitrile in aqueous ethyl lactate is described. This pot, atomic step economic (PASE) methodology provides a practical approach for the preparation various 5‐substituted chromeno[2,3‐ b ]pyridines from readily available starting materials at ambient temperature without any catalyst. High yields excellent functional groups tolerance are observed. magnified image

Language: Английский

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Visible‐Light‐Promoted Transition‐Metal‐Free Approach toward Phosphoryl‐Substituted Dihydroisoquinolones via Cascade Phosphorylation/Cyclization of N‐Allylbenzamides

Advanced Synthesis & Catalysis, Journal Year: 2019, Volume and Issue: 361(16), P. 3712 - 3717

Published: June 5, 2019

Abstract A transition‐metal‐free visible‐light‐promoted radical phosphorylation/cyclization of N ‐allylbenzamides with phosphine oxides for the synthesis phosphoryl‐substituted dihydroisoquinolones was developed under room temperature. This protocol features mild reaction conditions, simple operation, broad substrate scope as well scale‐up ability. magnified image

Language: Английский

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Iodine-Catalyzed Odorless Synthesis of S-Thiocarbamates with Sulfonyl Chlorides as a Sulfur Source

The Journal of Organic Chemistry, Journal Year: 2019, Volume and Issue: 84(10), P. 6065 - 6071

Published: April 19, 2019

A general and efficient protocol for the direct preparation of various S-thiocarbamates with readily available inexpensive sulfonyl chlorides as an odorless sulfur source was developed. The employment easily reactants, excellent functional group tolerability, mild reaction conditions make this process very practical.

Language: Английский

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An unexpected generation of magnetically separable Se/Fe3O4 for catalytic degradation of polyene contaminants with molecular oxygen

Chinese Chemical Letters, Journal Year: 2020, Volume and Issue: 31(12), P. 3205 - 3208

Published: Aug. 8, 2020

Language: Английский

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