Effective synthesis of cyclic carbonates from carbon dioxide and epoxides by phosphonium iodides as catalysts in alcoholic solvents
作者:Naoto Aoyagi、Yoshio Furusho、Takeshi Endo
DOI:10.1016/j.tetlet.2013.10.068
日期:2013.12
Phosphonium iodides effectively catalyzed the reaction of CO2 and epoxides under mild conditions such as ordinary pressure and ambienttemperature in 2-propanol, and the corresponding five-membered cyclic carbonates were obtained in high yields.
Vinylphosphonium Salts and Allenes from Carbonyl Compounds Using Titanium-Substituted Ylides
作者:Kelly A. Reynolds、Pablo G. Dopico、Marcus S. Brody、M. G. Finn
DOI:10.1021/jo961000d
日期:1997.4.1
allene synthesis. This methodology, along with a previously reported one-pot reaction, comprises the most convenient route available for the synthesis of 1,3-disubstituted allenes. The metal-substituted ylide reagent may be generated in situ from commercially-available startingmaterials. Two representative vinylphosphonium salts were shown to undergo reversible isomerization to the (Z)-form upon irradiation