SOLVENT EFFECTS IN REACTIONS OF DIKETONES WITH WITTIG AND WITTIG-HORNER REAGENTS
作者:Sheila Mawaziny、Amal M. Lawny
DOI:10.1080/10426500008046614
日期:2000.8.1
Abstract In a series of reactions between Wittig or Wittig-Horner (Wadsworth-Emmons) reagents and diketones it was found that out of the five solvents tested, for the Wittig reagents, namely dichloromethane, toluene, ethanol, dimethylformamide, and pyridine, only pyridine had a significant effect on the Z:E ratio of isomeric products, percent Z isomer being increased. In contrast to the Wittig reagents