Carbon Dioxide Utilisation for the Synthesis of Unsymmetrical Dialkyl and Cyclic Carbonates Promoted by Basic Ionic Liquids
作者:Peter Goodrich、H. Q. Nimal Gunaratne、Lili Jin、Yuntao Lei、Kenneth R. Seddon
DOI:10.1071/ch17530
日期:——
basic ionicliquids, via carbondioxide conversion, is described here. These ionicliquids were found to be effective bases for the fixation of carbondioxide 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 ionicliquids were
Cs2CO3 promoted O-alkylation of alcohols for the preparation of mixed alkyl carbonates
作者:Feixia Chu、Eric E. Dueno、Kyung Woon Jung
DOI:10.1016/s0040-4039(99)00084-2
日期:1999.3
The presence of cesium carbonate and tetrabutylammonium iodide (TBAI) facilitated efficient O-alkylation of alcohols with alkyl halides, giving rise to the exclusive formation of mixed alkyl carbonates. The cesium effect was also examined comparatively with other alkali carbonates. (C) 1999 Elsevier Science Ltd. All rights reserved.
VERFAHREN ZUR HERSTELLUNG VON SYMMETRISCHEN UND UNSYMMETRISCHEN CARBONATEN
申请人:GÖDECKE GMBH
公开号:EP1154980B1
公开(公告)日:2004-05-26
[DE] VERFAHREN ZUR HERSTELLUNG VON SYMMETRISCHEN UND UNSYMMETRISCHEN CARBONATEN<br/>[EN] METHOD FOR PRODUCING SYMMETRICAL AND ASYMMETRICAL CARBONATES<br/>[FR] PROCEDE DE PREPARATION DE CARBONATES SYMETRIQUES ET ASYMETRIQUES
申请人:GOEDECKE AG
公开号:WO2000047544A1
公开(公告)日:2000-08-17
Verfahren zur Herstellung von symmetrischen und unsymmetrischen Carbonaten der allgemeinen Formel (I) durch Umsetzung von Alkoholen der allgemeinen Formel (II) und Alkyl- bzw. Arylhaliden der allgemeinen Formel (III), mit Kohlendioxid und Cesiumcarbonat bei Raumtemperatur in dipolar aprotischen Lösungsmitteln.