photocatalytic procedure that enables the acylation/arylation of unfunctionalized alkyl derivatives in flow. The method exploits the ability of the decatungstate anion to act as a hydrogen atom abstractor and produce nucleophilic carbon-centered radicals that are intercepted by a nickel catalyst to ultimately forge C(sp3)−C(sp2) bonds. Owing to the intensified conditions in flow, the reaction time can be reduced
A new method for synthesis of α,α-disubstituted carbonyl compounds from carbonyl compounds with one-carbon homologation through β-oxido carbenoid rearrangement as the key reaction
作者:Kohsuke Miyashita、Tsuyoshi Satoh
DOI:10.1016/j.tet.2005.03.054
日期:2005.5
with electrophiles such as aldehydes, ethyl chloroformate, benzoyl chloride, haloalkanes to give α,α-disubstituted carbonylcompounds in moderate to good yields. This method provides a new and efficient way for synthesis of α,α-disubstituted carbonylcompounds from carbonylcompounds with one-carbon homologation in only two synthetic operations.