Photoredox Catalysis for Organic Syntheses

Abstract

Current examples of photoredox catalytic processes for CO, CN, CHal and CC bond formation are described with emphasis on the basic mechanistic scenarios. The focus is on the special aspects of photochemical redox catalysis especially on the electron transfer energetics, the use of electron transfer (ET) sensitizers and mediators as well as sacrificial reagents.magnified image

Organic Photoredox Catalysis

“…Interception of the distonic cation radical by molecular O 2 , followed by reduction and a second cyclization, furnishes the 1,2-dioxane adducts. 6 Scheme 169). Recently, photoinduced electron transfer methods have been developed to realize alkene dimerization to cyclobutanes.…”

Visible‐Light Photocatalysis as an Enabling Tool for the Functionalization of Unactivated C(sp3)‐Substrates

“…[1] Over the past decade, visible-light photocatalysis has emerged as one of the most dynamic and powerful synthetic manifolds in today's synthetic chemistry landscape. [2][3][4][5][6][7][8][9][10][11][12][13][14] This is initial studies focused largely on the functionalization of stabilized radical intermediates, over the past few years significant efforts have been directed towards the functionalization of challenging unactivated radical precursors. In this review we summarize the recent developments in the use of visible-light photocatalysis for the functionalization of unactivated C(sp 3 )-substrates.…”

Enantioselektive Katalyse photochemischer Reaktionen

“…[86] Sehr viele weitere Katalysatoren dieses Typs sind seitdem entwickelt worden, und das Gebiet der Photoredox-Katalyse wächst rasch. [87] Für enantioselektive Prozesse relevant und daher in Abbildung 12 dargestellt sind die Iridium-Komplexe, z. B.…”