Sulfoxonium Ylides as a Carbene Precursor in Rh(III)-Catalyzed C–H Acylmethylation of Arenes

Organic Letters, Год журнала: 2017, Номер 19(19), С. 5256 - 5259

Опубликована: Сен. 13, 2017

Sulfoxonium ylides act as an efficient carbene precursor in rhodium(III)-catalyzed C-H acylmethlyation of a variety arenes assisted by different chelating groups, and both aryl- alkyl-substituted β-carbonyl sulfoxonium are applicable. The system proceeded under redox-neutral conditions with broad scope, high efficiency, functional group tolerance.

Язык: Английский

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Cationic Cobalt(III) Catalyzed Indole Synthesis: The Regioselective Intermolecular Cyclization of N‐Nitrosoanilines and Alkynes

Angewandte Chemie International Edition, Год журнала: 2016, Номер 55(12), С. 4035 - 4039

Опубликована: Фев. 17, 2016

Abstract The unique regioselectivity and reactivity of cobalt(III) in the direct cyclization N‐nitrosoanilines with alkynes for expedient synthesis N‐substituted indoles is demonstrated. In presence a catalyst, high was observed when using unsymmetrical meta ‐substituted N‐nitrosoanilines. Moreover, internal bearing electron‐deficient groups, which are almost unreactive [Cp*Rh III ]‐catalyzed system, display good this transformation.

Язык: Английский

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Cobalt(III)‐Catalyzed CH/NO Functionalizations: Isohypsic Access to Isoquinolines

Chemistry - A European Journal, Год журнала: 2015, Номер 21(44), С. 15525 - 15528

Опубликована: Сен. 30, 2015

C-H/N-O functionalizations by cobalt(III) catalysis allowed the expedient synthesis of a broad range isoquinolines. Thus, internal and challenging terminal alkynes proved to be viable substrates for an isohypsic annulation, which was shown proceed facile C-H cobaltation.

Язык: Английский

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Cooperative Lewis Acid/Cp*Co^III Catalyzed C−H Bond Activation for the Synthesis of Isoquinolin‐3‐ones

Angewandte Chemie International Edition, Год журнала: 2016, Номер 55(18), С. 5577 - 5581

Опубликована: Март 24, 2016

A facile route toward the synthesis of isoquinolin-3-ones through a cooperative B(C6 F5 )3 - and Cp*Co(III) -catalyzed C-H bond activation imines with diazo compounds is presented. The inclusion catalytic amount results in highly efficient reaction, thus enabling unstable NH to serve as substrates.

Язык: Английский

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Cobalt(III)-Catalyzed Directed C–H Allylation

Organic Letters, Год журнала: 2015, Номер 17(15), С. 3714 - 3717

Опубликована: Июль 14, 2015

The cobalt(III)-catalyzed allylation was developed for amide-directed C–H activation of arenes, heteroarenes, and olefins. A variety allyl sources can be employed to introduce this useful functional group.

Язык: Английский

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