Isomerization of Allyl Ethers with [Ru₃]@SiEG_cap

Significance

Ruthenium-encapsulating poly­siloxane gel ([Ru₃]@SiEG_cap) was prepared by the treatment of polymethylhydrosiloxane (PMHS) with ethylene glycol in the presence of ruthenium complex 1, followed by capping with MeOCH₂CH₂OH. [Ru₃]@SiEG_cap catalyzed the isomerization of various allyl ethers to afford the corresponding vinyl ethers (9 examples, up to >95% yield). [Ru₃]@SiEG_cap was recovered by ­filtration and reused three times without loss of catalytic activity (the yield in each recycle experiment was over 95%).