|Visible Light-Induced Radical Transformations|
: 198 : 2016.04.06 09:02
|일시 : 2016.04.06 17:00|
|소속 : 중앙대학교 화학과|
|발표자 : 조은진|
|장소 : R404|
Recently, visible light photocatalysis has attracted substantial attention due to its environmental compatibility and versatility in promoting a large number of synthetically important reactions. We have developed a variety of radical transformations using Ru-, Ir-, and Pt-based photocatalysts under visible light irradiation.
Fluoroalkylated organic compounds play significant roles in the pharmaceutical, agrochemical, and material sciences owing to the substantial influence that fluorine substitution has on the physical and chemical properties of substances. Visible light-induced methods allowed access to fluoroalkyl group-containing molecules, such as –CF2R,–CF3, and –CF2SPh, groups.
Polyheteroaromatic compounds have also attracted much attention due to their unique p-conjugation, which make them suitable functional materials in many applications. The synthesis of carbazole motif has been accomplished using N-substituted amidobiaryls through the merger of photoredox and palladium catalysis. The use of 1 mol% of an Ir-photocatalyst obviated the typical high loadings of external chemical additives in the transformation. And recently, we synthesized a new class of polyheteroaromatics from the coupling process between readily accessible 2-heteroaryl substituted aromatic amines and heteroaromatic alkynes by an Ir-catalyzed visible light photocatalysis.