THE HIGHLY STEREOSELECTIVE SYNTHESIS OF<i>CIS</i>-VINYLOXIRANES
作者:Masahiko Yamaguchi、Teruaki Mukaiyama
DOI:10.1246/cl.1982.237
日期:1982.2.5
In the presence of triethylaluminum, oxyallyl anions derived from 2-allyloxybenzimidazoles react with aldehydes in highly regio-and stereoselective manner to afford α-adducts in good yields. The adducts are stereospecifically converted to cis-vinyloxiranes in good yields.
2-allyloxybenzimidazole, reacts with 2,3-O-isopropylidene-D and L-glyceraldehyde in highly regio- and stereoselective manner to give the corresponding enantiomeric adducts. The adducts are futher transformed to D- and L-ribose, respectively, by a four-steps process.