Intramolecular carbonyl olefination of esters. Regioselective preparation of enol ethers of cyclic ketones by the titanocene(ii)-promoted reaction of alkyl ω,ω-bis(phenylthio)alkanoates
Abstract
The treatment of alkyl ω,ω-bis(phenylthio)alkanoates with Cp2Ti[P(OEt)3]2 produced enol ethers of 5-, 6-, 7-, and 9-membered cyclic ketones.