New phosphorus self-assembling ligands for the tandem hydroformylation–Wittig olefination reaction of homoallylic alcohols — A key step for stereoselective pyran synthesis
作者:Qiao Ruan、Le Zhou、Bernhard Breit
DOI:10.1016/j.catcom.2014.04.022
日期:2014.8
New self-assembled phosphorus ligands are synthesized and used in the rhodium complex catalyzed hydroformylation-Wittig reaction of homoallylic olefins under optimized condition. A subsequent oxa-Michael intramolecular reaction yields beta-pyran derivatives (conversion and diastereoselectivity up to 99%). (C) 2014 Elsevier B.V. All rights reserved.