Reaction of Various Oxiranes and Carbon Dioxide. Synthesis and Aminolysis of Five-Membered Cyclic Carbonates
作者:Takeshi Iwasaki、Nobuhiro Kihara、Takeshi Endo
DOI:10.1246/bcsj.73.713
日期:2000.3
Various oxiranes reacted with carbon dioxide at 100 °C using lithium bromide as a catalyst under atmospheric pressure to afford the corresponding five-membered cyclic carbonates quantitatively. The rate of the reaction increased as the bulkiness of substituents on the oxirane ring was reduced or an electron-withdrawing group was introduced on the oxirane ring. The stereochemistry of the reaction of
Cooperative Catalysis of Cyclic Carbonate Ring Opening: Application Towards Non-Isocyanate Polyurethane Materials
作者:Vince M. Lombardo、Elizabeth A. Dhulst、Emily K. Leitsch、Nathan Wilmot、William H. Heath、Anthony P. Gies、Matthew D. Miller、John M. Torkelson、Karl A. Scheidt
DOI:10.1002/ejoc.201500313
日期:2015.5
The reaction between cyclic carbonates and amines to produce hydroxyurethanes is an important alternative to current urethane chemistry. In order to address the issue of slow reactionrates, an efficient ring opening of cyclic carbonates with amines has been achieved utilizing cooperative catalysis. A new Lewisacid/Lewis base combination substantially decreases the reaction times for small molecule
FORMATION OF CARBAMATE DERIVATIVES BY REACTION OF CHLOROMETHYLOXIRANE OR PHENYLOXIRANE WITH CARBON DIOXIDE AND ALIPHATIC AMINES
作者:Takashi Asano、Norio Saito、Shota Ito、Kiyotaka Hatakeda、Takashi Toda
DOI:10.1246/cl.1978.311
日期:1978.3.5
Reactions of chloromethyloxirane or phenyloxirane with carbon dioxide and aliphaticamines in methanol afforded corresponding hydroxyoxazinone or hydroxycarbamate derivatives under mild conditions.