A Consecutive C−H Functionalization Triggered by Oxidation of Active sp<sup>3</sup>C−H Bonds: Construction of 3,4-Dihydroquinoline-3-one Derivatives
作者:Xiaodong Jia、Wentao Hou、Yu Shao、Yu Yuan、Qian Chen、Pengfei Li、Xiaofei Liu、Honghe Ji
DOI:10.1002/chem.201702497
日期:2017.9.21
We report a consecutiveC−Hfunctionalization that constructs 3,4‐dihydroquinoline‐3‐one derivatives in high yields. This reaction is triggered by oxidation of active sp3 C−Hbonds of glycines and N‐benzylanilines. In this radical mediated transformation, four sp3 C−Hbonds are functionalized efficiently, together with construction of one heterocyclic ring with a quaternary carbon center.
Tris(4-bromophenyl)aminium Hexachloroantimonate-Initiated Oxidative Povarov-Type Reaction between Glycine Esters and (Cyclopropylidenemethyl)benzenes Using the Counterion as a Chlorine Donor
-initiated oxidative Povarov-type reactionbetween glycines and methylenecyclopropanes was realized in the presence of dioxygen, in which the counterion, SbCl6–, served as a chlorine atom donor, enabling the synthesis of a series of chlorinated quinolines in high yields. The mechanistic study showed that the chlorination step might be related to antimony chloride via a radical chlorine atom transfer