One-Pot Synthesis of 2,7-Dioxabicyclo[2.2.1]heptanes from Oxoallylsilanes
作者:Francisco J. Pulido、Asunción Barbero、Raquel Abad
DOI:10.1002/ejoc.201101087
日期:2011.12
oxoallylsilanes is described. The mechanism of this tandem reaction is a sequential epoxidation of the allylsilane moiety and subsequent intramolecular cyclization. This simple protocol allows the synthesis of epoxy-bridged tetrahydropyrans from allene in two high-yielding steps: silylcupration of allene (followed by capture of the intermediate cuprate with enones) and treatment of the oxoallylsilanes thus obtained