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, Год журнала: 2019, Номер 9(9), С. 2305 - 2314

Опубликована: Янв. 1, 2019

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

Язык: Английский

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

Chemical Communications, Год журнала: 2020, Номер 56(44), С. 5997 - 6000

Опубликована: Янв. 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.

Язык: 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, Год журнала: 2021, Номер 949, С. 121933 - 121933

Опубликована: Июнь 11, 2021

Язык: 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, Год журнала: 2018, Номер 10(13), С. 2887 - 2892

Опубликована: Март 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.

Язык: Английский

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

Organic Chemistry Frontiers, Год журнала: 2017, Номер 5(4), С. 539 - 543

Опубликована: Окт. 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.

Язык: Английский

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