Potassium Bromide → HCID 19966732, compound

Participants

Reaction Steps

N-(4,6-dimethoxypyrimidin-2-yl)-N'-{[(1H-pyrrol-1-yl)amino]sulfonyl}urea (I-53; 0.164 g; 0.48 mM) synthesized according to synthesis Example 1 at room temperature was dissolved in 10 ml of tetrahydrofuran. To the solution was added under cooling with ice-water N-bromosuccinimide (0.085 g; 0.48mM). After cooled for a short period of time, the mixture was stirred at room temperature for 3 hours. The solvent in the reaction mixture was then distilled away and the resultant residue was purified with column chromatography on silica gel to obtain the target product. White solid; m.p. 157° C.; Yield 0.095 g (47.5%) IR (KBr cm-1): 3320 3132 1716 1614 1582 1454 1364 1170 NMR(CDCl3, δ): 3.7(6H,s:pyrimidine ring OCH3 ×2) 5.6(1H,s:pyrimidine ring H) 6.0(2H,m:pyrrole ring C3 and C4) 6.7~6.9(1H,m:pyrrole ring C5) 8.5(1H,bs:NH) 12.5(1H,bs:NH)

Provenance & Evidence