LEWIS ACID MEDIATED ALLYLATION OF 2-ALKANOYL-1,4-QUINONES WITH ALLYLSILANE AND ALLYLSTANNANE
Allyltrimethylstannane reacts with 2-alkanoyl-1,4-quinones regioselectively to afford conjugate addition products which can be derived to 2-alkanoyl-3-allylhydroquinone diacetate, while allyltriphenylsilane reacts with the quinone to give naphthofuran.