反应详情

3-[7-(2-chloroethoxy)-1-oxoisoquinolin-2(1H)-yl]-4-methylbenzoic acid (504 mg), DIPEA (0.7 ml), potassium iodide (332 mg) and N-methylisopropylamine (0.42 ml) in DMA (4 ml) was heated under microwave irradiation conditions (Personal Chemistry Emrys Optimizer with 300 W magnetron) at 120° C. for 30 minutes. The mixture was diluted with methylene chloride (25 ml), isocyanate resin (CombiZorb) (7.67 g) was added and stirred at room temperature for 18 hours. The resin was removed by filtration and the filtrate was washed with water. The aqueous phase was purified by column chromatography on an ion exchange column (isolute SCX column from International Sorbent Technology Limited, Henoed, Mid-Glamorgan, UK) using initially methanol and then a 99:1 mixture of methanol and aqueous ammonia solution to yield 3-[7-{2-[isopropyl(methyl)amino]ethoxy}-1-oxoisoquinolin-2(1H)-yl]-4-methylbenzoic acid as a pale brown solid (110 mg); NMR Spectrum: (DMSOd6) 1.00 (m, 6H), 2.15 (s, 3H), 2.30 (s, 3H), 2.45 (s, 1H), 2.85 (m, 2H), 4.15 (m, 2H), 6.70 (m, 1H), 7.20 (m, 1H), 7.40 (m, 1H), 7.55 (m, 1H), 7.70 (m, 2H), 7.80 (m, 1H), 7.95 (m, 1H); Mass Spectrum: M+H+ 395.

1. additionwas added
2. customThe resin was removed by filtration
3. washthe filtrate was washed with water
4. customThe aqueous phase was purified by column chromatography on an ion exchange column (isolute SCX column from International Sorbent Technology Limited, Henoed, Mid-Glamorgan, UK)
5. additiona 99:1 mixture of methanol and aqueous ammonia solution