Photoinduced Remote Selective C(sp3)−H Alkylation Mediated by Cesium Formate DOI

Vijay Kumar Simhadri,

Rupam Sur,

Veera Reddy Yatham

et al.

European Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 27(32)

Published: May 13, 2024

Abstract Herein, we developed a photoinduced remote selective C( sp 3 )−H alkylation of protected amines in the presence cesium formate. The were synthesized from commercially available inexpensive 2‐iodo benzoyl chloride. Under mild reaction conditions, situ generated aryl radical is converted to α‐amidoalkyl via [1,5]‐HAT process, which combines with different Michael acceptors and affords corresponding products good yields. Preliminary mechanistic studies revealed that formate anion acts as source carbon dioxide (CO 2 ⋅ − ) hydrogen atom donor was directly confirmed by isotope‐labeling studies.

Language: Английский

Micellar Effects and their Relevance in Photochemistry and Photocatalysis DOI Creative Commons
Linda Brüss,

Rubaishan Jeyaseelan,

Julian C. G. Kürschner

et al.

ChemCatChem, Journal Year: 2022, Volume and Issue: 15(1)

Published: Nov. 11, 2022

Abstract The encapsulation of substrates within micellar structures gives rise to a multitude effects beyond simple solubilization in water. When incorporated photochemical reaction design media may offer possibilities control both reactivity and selectivity. Herein, we describe various important phenomena such as encapsulation, polarity differences, electrostatic interactions hydrogen bonding, discuss the resulting mechanisms by which outcomes can be greatly influenced. In this concept article, showcase selected reactions demonstrate how selectively applied design.

Language: Английский

Citations

15

[Cp*IrCl2]2-Catalyzed Amidocarbonation of Olefins with Sulfoxonium Ylides toward Functionalized Isoindolin-1-ones DOI
Qi Yang,

Junxue Bai,

Han Yang

et al.

Organic Letters, Journal Year: 2023, Volume and Issue: 25(39), P. 7148 - 7153

Published: Sept. 26, 2023

A [Cp*IrCl2]2-catalyzed amidocarbonation of olefins with sulfoxonium ylides has been developed to generate diverse biologically important isoindolin-1-ones in high efficiency under mild reaction conditions. Mechanism studies indicated that this cascade was triggered by amino-iridation the olefin unit iridacycle, followed formal migratory insertion ylides. This newly method features broad substrate scopes and operational simplicity.

Language: Английский

Citations

9

Electron donor–acceptor complex enabled cascade reaction of unprotectedo-anilide aryl chlorides for heterocycle synthesis DOI

Zhusheng Yang,

Wen‐Xin Tang,

Beibei Zhang

et al.

Organic Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 10(5), P. 1219 - 1223

Published: Jan. 1, 2023

An electron donor–acceptor complex strategy that enabled photoactivation of aryl chlorides has been reported with the toluene anion or t BuOK as donor.

Language: Английский

Citations

8

Facilitating [2+2] Photocycloadditions by Promoting Oxygen Tolerance and Substrate Activation in Water DOI Creative Commons

Julian C. G. Kürschner,

Linda Brüss, Line Næsborg

et al.

Chemistry - A European Journal, Journal Year: 2023, Volume and Issue: 29(26)

Published: March 2, 2023

Abstract Micellar photocatalysis has been used to overcome oxygen quenching and enable a [2+2] photocycloaddition through triplet‐energy transfer in water under aerobic conditions. The cheap commercially available self‐assembling sodium dodecyl sulfate (SDS) micelles were found increase the tolerance of typically oxygen‐sensitive reaction. Furthermore, use micellar solution was activate α,β‐unsaturated carbonyl compounds energy allow photocycloadditions take place. Our preliminary studies effects on energy‐transfer‐based reactions demonstrate reaction between activated alkenes mixture SDS, [Ru(bpy) 3 ](PF 6 ) 2 .

Language: Английский

Citations

8

Photoinduced Remote Selective C(sp3)−H Alkylation Mediated by Cesium Formate DOI

Vijay Kumar Simhadri,

Rupam Sur,

Veera Reddy Yatham

et al.

European Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 27(32)

Published: May 13, 2024

Abstract Herein, we developed a photoinduced remote selective C( sp 3 )−H alkylation of protected amines in the presence cesium formate. The were synthesized from commercially available inexpensive 2‐iodo benzoyl chloride. Under mild reaction conditions, situ generated aryl radical is converted to α‐amidoalkyl via [1,5]‐HAT process, which combines with different Michael acceptors and affords corresponding products good yields. Preliminary mechanistic studies revealed that formate anion acts as source carbon dioxide (CO 2 ⋅ − ) hydrogen atom donor was directly confirmed by isotope‐labeling studies.

Language: Английский

Citations

3