Reactions and characterization of allylic and related zirconium reagents (allenic and γ-alkoxyallylic zirconiums) generated by treatment of allylic and/or propargylic ethers with a zirconocene-butene complex (“Cp2Zr”) are described.
transmetalation of the pi-allylpalladium(II) complexes, generated in situ from a catalytic amount of a palladium(0) complex and a variety of allylic substrates, with indium(I) salts proceeded smoothly in various solvents, providing a new route for allylindium(III) reagents.
Stereoselective acyclic synthesis via allylmetals: vicinal diols from γ-alkoxyallylaluminium compounds and aldehydes or ketones
作者:Masato Koreeda、Yoshio Tanaka
DOI:10.1039/c39820000845
日期:——
The reaction of in situ generated γ-alkoxyallylaluminiumcompounds with aldehydes or ketones at –78 °C leads to the highly diastereoselective formation of mono-protected vicinaldiols; the precursor to exo-brevicomin was efficiently synthesised using this method.