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. 2010 Jun 9;15(6):4207–4212. doi: 10.3390/molecules15064207

Table 1.

Reaction between o-phenylene diamine and phenylglyoxal monohydrate in the presence of iodine (5 mol%) in different solvents under microwave irradiation.

graphic file with name molecules-15-04207-i002.jpg
Entry Solvent Time (min.) Yield (%)
1 Methanol 3 41
2 Ethanol 3 65
3 Tetrahydrofuran 5 48
4 Dichloromethane 3 27
5 THF/Water (1:1) 5 36
6 Water 5 38
7 Acetonitrile 3 72
8 Ethanol/Water (1:1) 30 sec. 99