Catalyzed or non-catalyzed: chemoselectivity of Ru-catalyzed acceptorless dehydrogenative coupling of alcohols and amines via metal–ligand bond cooperation and (de)aromatization

Catalysis Science & Technology, Journal Year: 2019, Volume and Issue: 9(9), P. 2305 - 2314

Published: Jan. 1, 2019

The mechanistic origin of the chemoselectivity for Ru-catalyzed acceptorless coupling amines and alcohols.

Language: Английский

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Direct synthesis of novel quinoxaline derivatives via palladium-catalyzed reductive annulation of catechols and nitroarylamines

Chemical Communications, Journal Year: 2020, Volume and Issue: 56(44), P. 5997 - 6000

Published: Jan. 1, 2020

A palladium-catalyzed new hydrogenative annulation reaction of catechols and nitroarylamines, allowing straightforward access to two classes novel quinoxaline derivatives, has been demonstrated.

Language: Английский

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Ruthenium−p-cymene complexes with acylthiourea, and its heterogenized form on graphene oxide act as catalysts for the synthesis of quinoxaline derivatives

Journal of Organometallic Chemistry, Journal Year: 2021, Volume and Issue: 949, P. 121933 - 121933

Published: June 11, 2021

Language: Английский

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Synthesis of (E)‐2‐Alkenylazaarenes via Dehydrogenative Coupling of (Hetero)aryl‐fused 2‐Alkylcyclic Amines and Aldehydes with a Cobalt Nanocatalyst

ChemCatChem, Journal Year: 2018, Volume and Issue: 10(13), P. 2887 - 2892

Published: March 23, 2018

Abstract To date, the synthesis of ( E )‐2‐alkenylazaarenes via condensation 2‐methyl N ‐heteroarenes with aldehydes or their equivalents has been well demonstrated. However, direct formation such a class useful compounds from extensively distributed 2‐alkylcyclic amine motifs remains an unresolved goal. Herein, by employing nitrogen‐silica‐doped carbon (Vulcan XC‐72R) as support, we have developed low‐loading cobalt nanocatalyst (Co/ ‐Si‐C). The combination catalyst p ‐nitrobenzoic acid and molecular O 2 exhibits excellent catalytic performance towards dehydrogenative coupling (hetero)aryl‐fused amines to afford )‐2‐alkenylazaarenes. In reaction, effective capture partially dehydrogenated cyclic appears be key strategy address issue chemoselectivity. transformation proceeds merits broad substrate scope, good functional group tolerance, high atom‐efficiency, use earth‐abundant reusable green oxidant, which offers important basis for conversion inert units into frameworks.

Language: Английский

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Copper-catalysed dehydrogenative α-C(sp³)–H amination of tetrahydroquinolines with O-benzoyl hydroxylamines

Organic Chemistry Frontiers, Journal Year: 2017, Volume and Issue: 5(4), P. 539 - 543

Published: Oct. 12, 2017

A copper-catalysed dehydrogenative α-C(sp³)–H amination of tetrahydroquinolines with O-benzoyl hydroxylamines has been demonstrated, which enables direct access to 2-alkylaminoquinolines in efficient manner.

Language: Английский

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