bond oxidation of alkenes serves as possibly the most employed C–H bond functionalization reaction. However, sustainable and selective approaches remain scarce, and the majority of the existing conditions still hinge on hazardous oxidants or costly metal catalysts. In this context, we introduce a heterogeneous iron catalyst that addresses the above-mentioned concerns by showcasing the aerobic oxidation
Mild Manganese(III) Acetate Catalyzed Allylic Oxidation: Application to Simple and Complex Alkenes
作者:Tony K. M. Shing、Yeung、Pak L. Su
DOI:10.1021/ol0612298
日期:2006.7.1
Manganese(III) acetate catalyzed allylic oxidation of alkenes to the corresponding enones was investigated, showing excellent regioselectivity and chemoselectivity (functional group compatibility). Delta(5)-Steroids were transformed into bioactive Delta(5)-en-7-ones under a nitrogen atmosphere, whereas simple alkenes were converted into the corresponding enones under an oxygen atmosphere in good yields.
An Unprecedented Method for the Generation of <i>tert</i>-Butylperoxy Radical Using DIB/TBHP Protocol: Solvent Effect and Application on Allylic Oxidation
作者:Yi Zhao、Ying-Yeung Yeung
DOI:10.1021/ol100603q
日期:2010.5.7
tert-Butylperoxy radical was generated with PhI(OAc)(2) and tBuOOH. Ester solvent was found to be critical and the protocol was applied in the allylic oxidation of various olefinic substrates, which gave the corresponding alpha,beta-unsaturated enones in good yield and regioselectivity.