Synthesis of β-hydroxy-δ-trichloromethyl-δ-valerolactones by intramolecular samarium/ytterbium diiodide-mediated Reformatsky reaction
作者:Thies M. Schulze、Jörg Grunenberg、Stefan Schulz
DOI:10.1016/j.tetlet.2012.11.146
日期:2013.2
intramolecular Reformatskyreaction. The cyclisation was effected by samarium diiodide or (for the first time) ytterbium diiodide. The diastereoselectivity of the reaction corresponds to earlier investigations by Molander. Consecutive stereoselective reactions during the esterification to the Reformatsky precursor 1,1,1-trichloropent-4-en-2-yl 2-bromopropanoate and in the Reformatskyreaction itself led