Abstract: A new type of homogeneous transition metal catalyzed process, redox fragmentation of allyl ethers in the presence of tris (triphenylphosphine) ruthenium (II) dichloride (l), is reported. a, a-Dimethylallyl benzyl ethers give benzaldehyde and 2-methyl-2- butene. Thus, redox fragmentation is accompanied by allylic transposition of the carbon- carbon double bond. Cleavage of the allylic carbon-oxygen bond is inferred to be rate ...