The synthesis of mono- and bicyclic ethers via acid catalysed ring-opening cyclisation of tetrahydropyranyl ether derivatives
作者:Darren J. Dixon、Steven V. Ley、Edward W. Tate
DOI:10.1039/a909302h
日期:——
A range of monocyclic and bicyclic alkenols were synthesised via acid catalysed ring-opening cyclisation of homoallylic tetrahydropyranyl ether derivatives in excellent yield. Upon palladium catalysed hydrogenation these products were reduced with excellent diastereoselectivity to the corresponding saturated cyclic alcohols in essentially quantitative yield.
Double Prins Cyclisation Enabled Rapid Access to α,ω‐Hydroxytetrahydropyrans
作者:Jonathan Trevorrow、Anne O'Kearney‐McMullan、Lucie Miller Potucka、Adrian P. Dobbs
DOI:10.1002/ejoc.202200810
日期:2022.10.26
substructure of many natural products and is frequently prepared through the oxidative cyclisation of a pendant hydroxyl group on to a pre-formed pyran. However access to such precursors has hitherto been challenging. A novel method for the preparation of hydroxydi- and hydroxytetrahydropyrans is reported utilizing a novel double-Prins cyclisation approach.