Olefin isomerization by a ruthenium carbenoid complex. Cleavage of allyl and homoallyl groups

Ruthenium–carbenoid catalysts such as Grubbs’ complex I mediate efficiently the isomerization of β,γ-unsaturated ethers and amines to the corresponding vinyl ethers and enamines. This reaction can be useful in the deprotection of allyl and homoallyl ethers as well as amines.