Abstract Allylation of a variety of quinones by allylic indium sesquihalides was studied. Reactions of unsubstituted p-benzoquinone with allylindium, prenylindium, and geranylindium reagents gave, after oxidation with silver oxide, the corresponding allylated quinones in good yields. These reactions appear to proceed via 1, 2-addition of the allylic indium reagents at the γ-carbon followed by [3, 3] sigmatropic rearrangement. Substituted ...
