Details

Autor(en) / Beteiligte

• Fuchs, Monica A.
• Altesleben, Christiane
• Zevaco, Thomas A.
• Dinjus, Eckhard

Titel

An Efficient Homogeneous Chloro-Aluminum-[N2O2] Catalyst for the Coupling of Epoxides with Carbon Dioxide

Ist Teil von

• European journal of inorganic chemistry, 2013-09, Vol.2013 (26), p.4541-4545

Ort / Verlag

Weinheim: WILEY-VCH Verlag

Erscheinungsjahr

2013

Quelle

Wiley Online Library

Beschreibungen/Notizen

• The coupling reaction of epoxides and CO2 is in the focus of many research activities in academia as well as in the industry. In this contribution we report on a versatile aluminum‐based homogeneous catalyst utilizing an easy‐to‐synthesize N2O2 ligand system in combination with various cocatalysts, all of them producing pure alternating poly(cyclohexene carbonate)s with Mn values in the range 10000–15000 g mol–1. This system also efficiently catalyzes the formation of propylene carbonate. A new homogeneous aluminum catalyst based on a N2O2 ligand obtained from diethyl ethoxymethylenemalonate was used in the conversion of epoxides with carbon dioxide. Copolymerization with cyclohexene oxide led to alternating polycarbonates in the presence of a cocatalyst even at only 2 bar CO2 pressure. Propylene oxide afforded selectively the corresponding cyclic carbonate in high yields.