+++thanks_1 article from Green Chemsitry

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Efficient synthesis of quinazoline-2,4(1H,3H)-diones from CO2 and 2-aminobenzonitriles in water without any catalyst
Jun Ma, Buxing Han, Jinliang Song, Jiayin Hu, Wenjing Lu, Dezhong Yang, Zhaofu Zhang, Tao Jiang and Minqiang Hou
Green Chem., 2013,15, 1485-1489

DOI:

http://dx.doi.org/10.1039/C3GC00091E

link:

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http://pubs.rsc.org/en/content/articlelanding/2013/gc/c3gc00091e/unauth#!divAbstract