Water → HCID 17953516, compound

Participants

Reaction Steps

2-amino-3-methyl-6-(6-methyl-benzothiazol-2-yl)-benzothiazolium iodide (0.3 g, 0.68 mmol) was taken up in DMSO (10 ml). Water was added (20 ml) and the mixture was basified to pH 10 with aqueous NaOH (20%). The precipitate was collected by filtration and washed with water to produce 3 as a light yellow solid (0.19 g, 89%). Mp 146-148° C.; 1H NMR (DMSO): 2.45 (3H, s, Ar—CH3), 3.38 (3H, s, N—CH3), 7.16 (1H, d, J=8.4, ArH), 7.33 (1H, d, J=8.4, ArH), 7.87 (1H, s, ArH), 7.90 (1H, s; ArH), 7.93 (1H, d, J=8.4, ArH), 8.16 (1H, s, ArH), 8.55 (1H, s, NH); 13C NMR analysis was not possible due to poor solubility of 4 in available deuterated solvents; HR-FAB-MS m/z Found: 312.0619 C16H14N3S2 (M+H+): requires M, 312.0629.

Provenance & Evidence