Diastereoselective Titanocene-Catalyzed Oxidative Cyclization of Bishomoallylic Alcohols
作者:Alessandra Lattanzi、Giorgio Della Sala、Maurizio Russo、Arrigo Scettri
DOI:10.1055/s-2001-16779
日期:——
Bishomoallylic alcohols are converted in good yields and diastereoselectivity into tetrahydrofuranols and tetrahydropyranols by Cp2TiCl2/t-butyl hydroperoxide/activated 4 Å molecular sieves system.
A new synthetic process for the construction of oxygen-containing heterocyclic systems starting from bicyclic acetals is described. We have investigated the mechanism and the stereochemicalcourse of the reductive cleavage of acetals.