ammonium hydroxide 、
2-(3,3-Dimethyl-ureido)-4-propoxy-thiophene-3-carboxylic acid methyl ester 以
乙醇 为溶剂,
反应 5.0h,
以to afford a white solid (15 mg, 55.3 micromol, 51%) 1H NMR (CDCL3, 400 MHz) 1.03 (t, 3H, J=7.3 Hz), 1.81-1.88 (m, 2H), 3.04 (s, 6H), 3.97 (t, 2H, J=6.6 Hz), 5.33 (broad s, 1H), 5.55 (s, 1H), 7.50 (broad s, 1H), 12.00 (s, 1H)的产率得到2-(3,3-Dimethyl-ureido)-4-propoxy-thiophene-3-carboxylic acid amide