Synthesis of Cyclic Carbonates from Epoxides and Carbon Dioxide by Using Bifunctional One‐Component Phosphorus‐Based Organocatalysts. Issue 16 (17th July 2015)

• Record Type: Journal Article
• Authors: Büttner, Hendrik; Steinbauer, Johannes; Werner, Thomas
• Is Part Of: ChemSusChem. Volume 8:Issue 16(2015:Aug.)
• Page Start: 2655
• Page End: 2669
• Publication Date: 2015-07-17
• Subjects: Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201500612
• Languages: English
• ISSNs: 1864-5631

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Numerous bifunctional organocatalysts were synthesized and tested for the atom‐efficient addition of carbon dioxide and epoxides to produce cyclic carbonates. These catalysts are based on phosphonium salts containing an alcohol moiety in the side chain for substrate activation through hydrogen bonding. In the model reaction, converting 1, 2‐butylene oxide with CO₂, 19 catalysts were tested to determine structure–activity relationships. In total, 28 epoxides were converted with CO₂ to give the respective cyclic carbonates in yields of up to 99 %. Even at 45 °C, the most active catalyst was able to produce cyclic carbonates selectively in high yields. The carbonates were generally obtained as analytically pure products after simple filtration over silica gel. This single‐component catalyst system works under neat and mild reaction conditions and tolerates several useful moieties.</p> </abstract>