N–O Bond Activation by Energy Transfer Photocatalysis

Abstract

Selective energy transfer over electron transfer for N−O bond activation of oxime esters and atom-economical C−N bond formation are reported. pubs.acs.org/accountsArticle

Defect engineering of two-dimensional materials for advanced energy conversion and storage

“…Specifically, only when the energy of molecules is above a certain energy threshold, can they become activated and participate in the reaction. 165 For electrocatalysis, the committed steps like ion adsorption, electron transfer, and product desorption need to overcome corresponding energy barriers. Driven by a certain overpotential, the HER and oxygen evolution reaction (OER) processes can proceed.…”

Photoredox Selective Homocoupling of Propargyl Bromides

“…Visible-light-induced photoredox catalysis has emerged as a powerful synthetic tool due to its sustainability and mechanistic versatility in promoting a range of organic transformations with high levels of selectivity. , Many traditional reactions using stoichiometric redox reagents have been replaced by photoredox radical processes using sustainable photocatalysts. The Wurtz reaction of alkyl halides with sodium metal (later Ag, Li, Mg, Mn, Fe, Ni, and Zn) for homocoupled dimer synthesis could also be modified to photoredox Csp 3 –Csp 3 radical–radical homocoupling (Scheme a).…”

Photosensitized Vicinal Sulfonylamination of Alkenes with Oxime Ester and DABCO·(SO2)2

“…In the triplet state of alkyl/aryl carboxylic acid-oxime esters or ketoxime carbonates, a N–O bond homolysis would generate a N-centered iminyl radical and an O-centered carbonyloxyl radical. Considering the weak stability of the alkyl carbonyloxyl radical, CO 2 release or subsequent extrusion of another small molecule could be expected . Very recently, Glorius, Molander, Xia, and our group independently employed this strategy to accomplish a variety of difunctionalizations of alkenes by the rational design of bifunctional reagents.…”