反应详情

3-Methyl-6-(4-pyridyl)-2-methylthio-4(3H)-pyrimidinone (1.00 g 4.29 mmol) was dispersed in acetic acid (24 ml) and to the clear solution Bromine (0.5 ml, 1.5 g 9.38 mmol) was added. The reaction mixture stirred at room temperature for 24 h. The mixture was concentrated and the residue was co-evaporated with toluene until all bromine is removed. The crude compound is ready to use in next step. MS(m/z): 312 and 314. C10H11BrN3OS requir. 311 and 313. 1H-NMR(DMSO-d6):d 8.75 (m, 2H, pyridyl) 8.19 (m, 2H, pyridyl), 3.67 (s, 3H, N—CH3), 2.80 (s, 3H, S—CH3).

1. additionwas added
2. concentrationThe mixture was concentrated
3. customis removed