Synthesis of Indenopyrazole Frameworks via Cascade C–H Functionalization/[3 + 2] Dipolar Cycloaddition/Aromatization Rearrangement Reactions DOI
Min Wu, Ruiqi Wang, Fangyuan Chen

и другие.

Organic Letters, Год журнала: 2020, Номер 22(18), С. 7152 - 7157

Опубликована: Авг. 28, 2020

The redox-neutral Ir(III)- or Ru(II)-catalyzed C–H couplings of azomethine imines with α,α-difluoromethylene alkynes have been realized, leading to the efficient synthesis indenopyrazole frameworks via a tandem functionalization/[3 + 2] dipolar cycloaddition/ring-opening aromatization rearrangement process, in which generated fluoroallene species was involved as dipolarophile selective β-F elimination process. Subsequent biological evaluation revealed that these synthesized indenopyrazoles could serve interesting cytotoxic agents for further development.

Язык: Английский

Cobalt(iii)-catalyzed redox-neutral [4+2]-annulation of N-chlorobenzamides/acrylamides with alkylidenecyclopropanes at room temperature DOI

Balu Ramesh,

Masilamani Jeganmohan

Chemical Communications, Год журнала: 2021, Номер 57(30), С. 3692 - 3695

Опубликована: Янв. 1, 2021

An efficient synthesis of substituted 3,4-dihydroisoquinolinones through [4+2]-annulation N-chlorobenzamides/acrylamides with alkylidenecyclopropanes using a less expensive and air stable Co(iii) catalyst is demonstrated.

Язык: Английский

Процитировано

31

Chiral Ligands Based on Binaphthyl Scaffolds for Pd-Catalyzed Enantioselective C–H Activation/Cycloaddition Reactions DOI Creative Commons
José Manuel González, Xandro Vidal, Manuel Á. Ortuño

и другие.

Journal of the American Chemical Society, Год журнала: 2022, Номер 144(47), С. 21437 - 21442

Опубликована: Ноя. 15, 2022

We report the first examples of use a new class ligands (NOBINAc) for performing asymmetric C-H activations using palladium catalysts. These combine axial chirality binaphthyl scaffolds with bifunctional and bidentate coordination properties mono-N-protected amino acids (MPAAs), which are well-known to favor Pd-promoted via concerted metalation-deprotonation mechanisms. demonstrate that our enable substantially higher enantioselectivities than MPAAs in assembly 2-benzazepines through formal (5 + 2) cycloadditions between homobenzyltriflamides or o-methylbenzyltriflamides allenes.

Язык: Английский

Процитировано

20

A divergent construction of fused and bridged carbo-/heterocyclic scaffoldsviacascade reactions of aryl azomethine imines with vinyl cyclic carbonates DOI

Xinyuan Cai,

Xia Song,

Xueying Yang

и другие.

Organic Chemistry Frontiers, Год журнала: 2023, Номер 10(4), С. 1015 - 1021

Опубликована: Янв. 1, 2023

Presented herein is a divergent synthesis of indene-fused pyrazoles and bridged benzodiazepines tethered with hydroxymethyl group through the cascade reactions aryl azomethine imines vinyl cyclic carbonates.

Язык: Английский

Процитировано

12

Electrochemical Oxidative C-C Bond Cleavage of Methylenecyclopropanes with Alcohols DOI
Rakesh Kumar, Shiv Dutt, Prabal Banerjee

и другие.

Chemical Communications, Год журнала: 2024, Номер 60(31), С. 4246 - 4249

Опубликована: Янв. 1, 2024

Herein, an electrochemical approach toward the ring opening functionalization of methylenecyclopropanes (MCPs) via C–C bond cleavage in presence alcohols is reported.

Язык: Английский

Процитировано

5

Synthesis of Indenopyrazole Frameworks via Cascade C–H Functionalization/[3 + 2] Dipolar Cycloaddition/Aromatization Rearrangement Reactions DOI
Min Wu, Ruiqi Wang, Fangyuan Chen

и другие.

Organic Letters, Год журнала: 2020, Номер 22(18), С. 7152 - 7157

Опубликована: Авг. 28, 2020

The redox-neutral Ir(III)- or Ru(II)-catalyzed C–H couplings of azomethine imines with α,α-difluoromethylene alkynes have been realized, leading to the efficient synthesis indenopyrazole frameworks via a tandem functionalization/[3 + 2] dipolar cycloaddition/ring-opening aromatization rearrangement process, in which generated fluoroallene species was involved as dipolarophile selective β-F elimination process. Subsequent biological evaluation revealed that these synthesized indenopyrazoles could serve interesting cytotoxic agents for further development.

Язык: Английский

Процитировано

31