Effective Guanidine-Catalyzed Synthesis of Carbonate and Carbamate Derivatives from Propargyl Alcohols in Supercritical Carbon Dioxide
作者:Nicola Della Ca'、Bartolo Gabriele、Giuseppe Ruffolo、Lucia Veltri、Tito Zanetta、Mirco Costa
DOI:10.1002/adsc.201000607
日期:2011.1.10
The reactions of propargyl alcohols with carbondioxide in supercriticalcarbondioxide or in acetonitrile with gaseous carbondioxide in the presence of organic bases as catalysts have been examined. Bicyclic guanidines are effective catalysts for the formation of α‐methylene cyclic carbonates under mild reaction conditions. Oxoalkyl carbonates, oxoalkyl carbamates or α‐methyleneoxazolidinones are
Efficient catalyst-free chemical fixation of carbon dioxide into 2-oxazolidinones under supercritical condition
作者:Jing Xiu Xu、Jin Wu Zhao、Zhen Bin Jia
DOI:10.1016/j.cclet.2011.04.004
日期:2011.9
Abstract 4-Methylene-1,3-oxazolidin-2-ones can be synthesized from propargylic alcohols, primary amines and carbondioxide under supercritical condition in the absence of any additional catalyst and solvent. Various propargylic alcohols and primary amines were examined.
Facile and Mild Process for Chemical Fixation of CO<sub>2</sub>to 4-Methylene-1,3-oxazolidin-2-ones Under Solvent-Free Conditions
作者:Jingxiu Xu、Jinwu Zhao、Zhenbin Jia、Jianhe Zhang
DOI:10.1080/00397911003707014
日期:2011.2.28
[image omitted] 4-Methylene-1,3-oxazolidin-2-ones were prepared via the cycloadditon reaction of propargylic alcohols with primary amines and CO2 under atmospheric pressure at 60 degrees C in the absence of any additional solvent. This methodology affords an ecofriendly, mild, and easy approach to chemical fixation of CO2.