Unusual [2+2]cycloaddition reaction of allylsilanes with 2,3--isopropylidene derivatives of -aldose catalyzed by boron trifluoride etherate
作者:Hideyuki Sugimura、Minako Uematsu
DOI:10.1016/s0040-4039(00)80650-4
日期:1988.1
In the reaction of allylsilanes with 2,3--isopropylidene derivatives of -aldose, [2+2] cycloaddition occurred predominantly rather than allylation in the presence of borontrifluorideetherate to give oxetane derivatives as major products together with small amounts of homoallyl alcohols.
The chemical synthesis of 13C-labeled mannose and fucose is important for the preparation of molecular probes used in the conformational study of the oligosaccharide portions of glycoproteins. A new method for the synthesis of the title [1-13C]-labeled compounds via the corresponding olefin compounds, which are in turn derived from d-mannitol or l-arabinose by efficient introduction of 13C, by the