反应详情

A solution of 6-bromo-2-(2-fluorophenyl)-1′-methyl-2′-(methylthio)spiro[chroman-4,4′-imidazol]-5′(1′H)-one (80 mg, 0.183 mmol) and NH4I (53.21 mg, 0.367 mmol) in a solution of NH3/EtOH (2 mL, 1.5 N) was heated at 110° C. in a tube under microwave reactor for 3 h. After cooling, the mixture was concentrated in vacuo to give a residue, which was purified by preparative TLC to afford 2′-amino-6-bromo-2-(2-fluorophenyl)-1′-methylspiro[chroman-4,4′-imidazol]-5′(1′H)-one (52 mg, 70%). 1H-NMR (MeOD): 2.15 (d, 1H), 2.25 (d, 1H), 3.20 (s, 3H), 6.15 (d, 1H), 6.78 (d, 1H), 6.99 (t, 1H), 7.05 (s, 1H), 7.15 (t, 1H), 7.25 (d, 2H), 7.50 (t, 1H).

1. temperatureAfter cooling
2. concentrationthe mixture was concentrated in vacuo
3. customto give a residue, which
4. customwas purified by preparative TLC