Journal
RSC ADVANCES
Volume 4, Issue 55, Pages 28941-28946Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra03659j
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Funding
- National Natural Sciences Foundation of China [21172125, 21121002]
- Specialized Research Fund for the Doctoral Program of Higher Education [20130031110013]
- MOE Innovation Team of China [IRT13022]
- 111 Project of Ministry of Education of China [B06005]
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Organic superbase-functionalized magnetic Fe3O4 was investigated to catalyze the fixation of CO2 with 2-aminobenzonitriles, resulting in the synthesis of quinazoline-2,4(1H,3H)-diones. After optimization of various reaction parameters such as reaction time, solvent, temperature and CO2 pressure, 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD)-functionalized Fe3O4 was proven to be an efficient and recyclable magnetic heterogeneous catalyst for the synthesis of various quinazoline-2,4(1H,3H)-diones in reasonable yields (66-93%), and it could be recovered using an external magnetic field.
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