Visible‐Light‐Promoted Ring‐Opening Alkynylation, Alkenylation, and Allylation of Cyclic Hemiacetals through β‐Scission of Alkoxy Radicals
作者:Jiang‐Ling Shi、Zixuan Wang、Rui Zhang、Yuankai Wang、Jianbo Wang
DOI:10.1002/chem.201901762
日期:2019.7.5
The alkoxy radicals that are derived fromcyclic hemiacetals have been generated through the visible‐light‐promoted reaction of the corresponding N‐alkoxyphthalimides with Hantzsch ester as the reductant. The alkoxy radicals subsequently undergo β‐scission of the C−C bond to generate carbon‐centered radicals, which are trapped by alkynyl‐, alkenyl‐, or allylsulfones.
Heterogeneous catalytic decarboxylative sulfonylation of cinnamic acids with sodium benzene sulfinates over a manganese(II)-based rod-shaped metal-organic framework catalyst
Based on the acid-base mixed-ligand assembly strategy, a stable Mn(II)-based metal-organicframework (denoted as Mn-MOFs), containing 1-D Mn–O–C rod-shaped chains, was hydrothermally synthesized and structurally characterized. This material was demonstrated to be an efficient heterogeneous catalyst for the decarboxylative sulfonylation of cinnamic acids with sodium benzene sulfinates. Moreover, the