Synthesis and Asymmetric Resolution of α-Azido-peroxides
作者:Suman Pramanik、Prasanta Ghorai
DOI:10.1021/ol401443a
日期:2013.8.2
An unprecedented synthesis of alpha-azido-peroxides has been developed using an FeCl3-catalyst starting from carbonyl, TMS-azide, and hydroperoxide. Further, a base promoted decomposition of synthesized secondary alpha-azido-peroxides to provide the corresponding tert-butyl esters has been disclosed. Finally, an asymmetric kinetic resolution of such alpha-azido-peroxides has also been developed to provide chiral a-azido-peroxides in excellent enantiopurity.
Acid-Catalyzed Activation of Peroxyketals: Tunable Radical Initiation at Ambient Temperature and Below
commercially available thermal initiators, and structurally related peroxides are activated in the presence of an acid catalyst to generate radicals at room temperature and below. This simple combination of two substrates was shown to efficiently initiate a variety of radical processes. This phenomenon is rationalized by the acid-catalyzed in situ formation of highly unstable alkenyl peroxides which readily