Photochemical radical cyclization reactions with imines, hydrazones, oximes and related compounds

M Latrache, N Hoffmann - Chemical Society Reviews, 2021 - pubs.rsc.org
Photochemical reactions are a key method to generate radical intermediates. Often under
these conditions no toxic reagents are necessary. During recent years, photo-redox catalytic …

O-Acyl oximes: versatile building blocks for N-heterocycle formation in recent transition metal catalysis

H Huang, J Cai, GJ Deng - Organic & biomolecular chemistry, 2016 - pubs.rsc.org
O-Acyl oximes are versatile building blocks being widely applied in organic synthesis,
especially for N-heterocycle construction under transition metal catalysis. In the last decade …

Diastereoselective radical aminoacylation of olefins through N-heterocyclic carbene catalysis

WD Liu, W Lee, H Shu, C Xiao, H Xu… - Journal of the …, 2022 - ACS Publications
There have been significant advancements in radical-mediated reactions through covalent-
based organocatalysis. Here, we present the generation of iminyl and amidyl radicals via N …

Electrochemically enabled synthesis of sulfide imidazopyridines via a radical cyclization cascade

PF Zhong, HM Lin, LW Wang, ZY Mo, XJ Meng… - Green …, 2020 - pubs.rsc.org
Owing to the inert nature of the pyridine ring and high activity of iminyl radicals, the reaction
between pyridine and iminyl radicals remains a significant challenge. In this paper, we …

Visible‐light‐mediated generation of nitrogen‐centered radicals: metal‐free hydroimination and iminohydroxylation cyclization reactions

J Davies, SG Booth, S Essafi… - Angewandte Chemie …, 2015 - Wiley Online Library
The formation and use of iminyl radicals in novel and divergent hydroimination and
iminohydroxylation cyclization reactions has been accomplished through the design of a …

Visible‐Light‐Promoted Iminyl‐Radical Formation from Acyl Oximes: A Unified Approach to Pyridines, Quinolines, and Phenanthridines

H Jiang, X An, K Tong, T Zheng… - Angewandte Chemie …, 2015 - Wiley Online Library
A unified strategy involving visible‐light‐induced iminyl‐radical formation has been
established for the construction of pyridines, quinolines, and phenanthridines from acyl …

Photosensitized intermolecular carboimination of alkenes through the persistent radical effect

T Patra, P Bellotti, F Strieth‐Kalthoff… - Angewandte Chemie …, 2020 - Wiley Online Library
An intermolecular, two‐component vicinal carboimination of alkenes has been
accomplished by energy transfer catalysis. Oxime esters of alkyl carboxylic acids were used …

Iminyl‐Radicals by Oxidation of α‐Imino‐oxy Acids: Photoredox‐Neutral Alkene Carboimination for the Synthesis of Pyrrolines

H Jiang, A Studer - Angewandte Chemie, 2017 - Wiley Online Library
The visible‐light‐promoted decarboxylation of α‐imino‐oxy propionic acids for the
generation of iminyl radicals has been accomplished through the use of Ir (dFCF3ppy) 2 …

Divergent Iron‐Catalyzed Coupling of O‐Acyloximes with Silyl Enol Ethers

HB Yang, N Selander - Chemistry–A European Journal, 2017 - Wiley Online Library
An iron‐catalyzed coupling reaction of O‐acyloximes and O‐benzoyl amidoximes with silyl
enol ethers is reported. The protocol provides access to functionalized pyrroles, 1, 6 …

Photocatalytic late-stage functionalization of sulfonamides via sulfonyl radical intermediates

MJ Tilby, DF Dewez, LRE Pantaine, A Hall… - ACS …, 2022 - ACS Publications
A plethora of drug molecules and agrochemicals contain the sulfonamide functional group.
However, sulfonamides are seldom viewed as synthetically useful functional groups. To …