22768-01-0Relevant academic research and scientific papers
Carbon Dioxide Utilisation for the Synthesis of Unsymmetrical Dialkyl and Cyclic Carbonates Promoted by Basic Ionic Liquids
Goodrich, Peter,Gunaratne, H. Q. Nimal,Jin, Lili,Lei, Yuntao,Seddon, Kenneth R.
, p. 181 - 185 (2018/03/09)
An efficient and greener synthesis of unsymmetrical organic carbonates mediated by Hünig's base-appended basic ionic liquids, via carbon dioxide conversion, is described here. These ionic liquids were found to be effective bases for the fixation of carbon dioxide by various alcohols and benzyl bromide, at room temperature. When the alcohol and the halide functionalities are present within the same substrate, the reaction cleanly produces a cyclic carbonate. These functionalised basic ionic liquids were fully recyclable with no loss product yields.
Acetals of N,N-dimethylformamides: Ambiphilic behavior in converting carbon dioxide to dialkyl carbonates
Takada, Yuki,Matsuoka, Aki,Du, Ya,Naka, Hiroshi,Saito, Susumu
supporting information, p. 146 - 147 (2013/04/10)
Carbon dioxide is immobilized into dialkyl carbonate using acetals of N,N-dimethylformamide under atmospheric pressure. No special treatment with tailor-made catalysts is needed. Use of dimethyl sulfoxide as a solvent is critical. An ambiphilic mechanism is proposed for the direct synthesis of dialkyl carbonates from acetals and carbon dioxide.
Method for producing symmetrical and asymmetrical carbonates
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Page column 5, (2010/02/06)
Process for the preparation of symmetrical and asymmetrical carbonates of the general formula I by reaction of alcohols of the general formula II and alkyl or aryl halides of the general formula III,R—OH??IIR′—HAL??IIIwith carbon dioxide and caesium carbonate at room temperature in dipolar aprotic solvents.
A bimetallic catalyst and dual role catalyst: Synthesis of N-(alkoxycarbonyl)indoles from 2-(alkynyl)phenylisocyanates
Kamijo, Shin,Yamamoto, Yoshinori
, p. 4764 - 4771 (2007/10/03)
3-Allyl-N-(alkoxycarbonyl)indoles are synthesized via the reaction of 2-(alkynyl)phenylisocyanates and allyl carbonates in the presence of Pd(PPh3)4 (1 mol %) and CuCl (4 mol %) bimetallic catalyst. It is most probable that Pd0
Preparation of urethane and carbonate products
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, (2008/06/13)
The present invention provides a process for preparing urethanes and carbonates from an amine or an alcohol, carbon dioxide and an allyl halide. The amine or alcohol is reacted with carbon dioxide to form the ammonium carbamate or carbonate salt which is
DEHYDROGENATION OF ALCOHOLS WITH ALLYL CARBONATES CATALYZED BY PALLADIUM OR RUTHENIUM COMPLEXES
Minami, Ichiro,Tsuji, Jiro
, p. 3903 - 3916 (2007/10/02)
Treatment of alkyl allyl carbonates with a phosphine-free palladium catalyst in acetonitrile affords ketones or aldehydes in high yields.This new method of oxidation of alcohols via allyl carbonates can be applied to various alcohols except simple primary alcohols.The reaction proceeds under neutral conditions and hence various acid- or base-sensitive functional groups are not affected during the reaction.Ruthenium hydride complex is also an effective catalyst.Direct dehydrogenation of secondary or allylic alcohols was carried out by the reaction with allyl methyl carbonate by the catalysis of the ruthenium complex. 1,4-Diols and 1,5-diols are converted to lactones with excess allyl methyl carbonate.
