反应详情

Using Method L above, (Z)-1,3-dihydro-4-(4-hydroxyphenyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-5-nitro-2H-indol-2-one (84 mg, 0.22 mmol) (from Example 37 supra) was reduced with zinc (130 mg, 2.0 mmol) and ammonium chloride (25.9 mg, 0.48 mmol) in 10% water in methanol (20 mL) at reflux for 18 h to give (Z)-5-amino-1,3-dihydro-4-(4-hydroxyphenyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one (yield: 38 mg, 49%).

1. temperatureat reflux for 18 h