Chemical fixation of CO2: efficient synthesis of quinazoline-2,4(1H, 3H)-diones catalyzed by guanidines under solvent-free conditions
摘要:
Guanidines were proved to be efficient catalysts for the chemical fixation of carbon dioxide with 2-aminobenzonitriles under solvent-free conditions. Notably, the catalysts with low loading worked well for a variety of 2-aminobenzonitriles. As a result, quinazoline-2,4(1H, 3H)-diones by employing present protocol were obtained in good yields under mild conditions. This process represents an alternative approach for the greener chemical fixation of CO2 to afford valuable compounds. (C) 2010 Elsevier Ltd. All rights reserved.
Chemical fixation of CO2: efficient synthesis of quinazoline-2,4(1H, 3H)-diones catalyzed by guanidines under solvent-free conditions
摘要:
Guanidines were proved to be efficient catalysts for the chemical fixation of carbon dioxide with 2-aminobenzonitriles under solvent-free conditions. Notably, the catalysts with low loading worked well for a variety of 2-aminobenzonitriles. As a result, quinazoline-2,4(1H, 3H)-diones by employing present protocol were obtained in good yields under mild conditions. This process represents an alternative approach for the greener chemical fixation of CO2 to afford valuable compounds. (C) 2010 Elsevier Ltd. All rights reserved.
Organicazides were prepared fromprimaryamines in high yields by metal-free diazo transfer with 2-azido-1,3-dimethylimidazoliniumhexafluorophosphate, which is a stable, crystalline solid that is easy to handle.
VERFAHREN ZUR NUTZUNG CO2-HALTIGER GASE UNTER VERWENDUNG ORGANISCHER BASEN
申请人:FRAUNHOFER-GESELLSCHAFT zur Förderung
der angewandten Forschung e.V.
公开号:EP3552688A1
公开(公告)日:2019-10-16
Die vorliegende Erfindung betrifft ein Verfahren zur CO2-Abscheidung und - Nutzung, umfassend das Einleiten eines CO2-haltigen Mischgases in eine Flüssigkeit, die eine organische Superbase oder ein Salz der organischen Superbase enthält, so dass sich ein CO2-Superbase-Addukt, in dem das CO2 chemisch gebunden ist, bildet, und die Umsetzung des CO2-Superbase-Addukts mit einem chemischen Reaktionspartner unter Bildung eines Reaktionsprodukts.