反应详情

To a solution of (E)-1-(4-(4-chlorobenzyl)-2-(pyridin-4-yl)thiazol-5-yl)-3-(dimethylamino)prop-2-en-1-one (93.0 mg, 0.242 mmol) in isopropyl alcohol (1.0 mL) was added guanidine hydrochloride (34.7 mg, 0.363 mmol) and sodium ethoxide (65.4 mg, 1.21 mmol) and the resulting mixture was heated to reflux for 3 days. The reaction was cooled and concentrated in vacuo. The residue was slurried in DCM (10 mL) and water (10 mL). The undissolved solids were filtered. This material was purified by preparative reverse phase chromatography to give 57 mg (62% yield) of the title compound as a white solid. LC/MS (FA) ES+ 380, 382. 1H NMR (300 MHz, DMSO-d6) δ 8.73-8.71 (m, 2H), 8.31 (d, 1H, J=5.1 Hz), 7.88-7.86 (m, 2H), 7.36-7.30 (m, 4H), 6.86 (bs, 2H), 6.84 (d, 1H, J=5.1 Hz), 4.56 (s, 2H).

1. temperaturethe resulting mixture was heated
2. temperatureto reflux for 3 days
3. temperatureThe reaction was cooled
4. concentrationconcentrated in vacuo
5. filtrationThe undissolved solids were filtered
6. customThis material was purified by preparative reverse phase chromatography