Transforming Olefins into
<i>γ</i>
,
<i>δ</i>
‐Unsaturated Nitriles through Copper Catalysis
作者:Xuesong Wu、Jan Riedel、Vy M. Dong
DOI:10.1002/anie.201705859
日期:2017.9.11
We have developed a strategy to transform olefins into homoallylic nitriles through a mechanism that combines copper catalysis with alkyl nitrile radicals. The radicals are easily generated from alkyl nitriles in the presence of the mild oxidant di‐tert‐butyl peroxide. This cross‐dehydrogenative coupling between simple olefins and alkylnitriles bears advantages over the conventional use of halides
Cyclic (E)-β-trimethylsilylketoxime acetates were effectively cleaved by a catalytic action of trimethylsilyl trifluoromethanesulfonate to give the corresponding unsaturated nitriles. The fragmentation in the Beckmann rearrangement is completely controlled and directed by trimethylsilyl group to lead regio- and stereospecific formation of the double bond.