A new organocatalytic protocol for the aerobic dehydrogenative allylation of alcohols
using non-activated alkenes as the allylating reagent and ambient air as the terminal
oxidant is established. Mechanistically, the procedure relies on the interplay of
a diselane and a photoredox catalyst by means of a light-induced electron transfer
process. Under optimized conditions, a broad range of both cyclic and acyclic ethers
is accessed with very high functional group tolerance and excellent regioselectivity.
Key words
alcohols - allylations - alkenes - oxidations - photoredox catalysis - selenium-π-acids