2-Aminothiazole → HCID 10246145, compound

Temperature

25 °C

A solution of 1-isopropyl-6-methylsulfanyl-1H-indole-3-carboxylic acid (275 mg, 1.10 mmol) and benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphate (585 mg, 1.32 mmol) in methylene chloride (5 mL) at 25° C. was treated with N,N-diisopropylethylamine (0.44 mL, 2.54 mmol). The reaction was stirred at 25° C. for 30 min. At this time, the reaction was treated with 2-aminothiazole (254 mg, 2.54 mmol) and then was stirred at 25° C. for 18 h. The reaction was then partitioned between water (40 mL) and ethyl acetate (40 mL) and was treated with a 1N aqueous hydrochloric acid solution (25 mL). The layers were shaken and separated. The organic layer was washed with a saturated aqueous sodium bicarbonate solution (1×25 mL), water (1×25 mL), and a saturated aqueous sodium chloride solution (1×25 mL). The organic layer was then dried over magnesium sulfate, filtered, and concentrated in vacuo. Biotage chromatography (FLASH 40S, Silica, 1/1 hexanes/ethyl acetate) afforded 1-isopropyl-6-methylsulfanyl-1H-indole-3-carboxylic acid thiazol-2-ylamide (155 mg, 42%) as light yellow solid: mp 172-176° C.; (ES)+-HRMS m/e calcd for C16H17N3OS2 (M+Na)+354.0705, found 354.0709.

1. stirringwas stirred at 25° C. for 18 h
2. customThe reaction was then partitioned between water (40 mL) and ethyl acetate (40 mL)
3. additionwas treated with a 1N aqueous hydrochloric acid solution (25 mL)
4. stirringThe layers were shaken
5. customseparated
6. washThe organic layer was washed with a saturated aqueous sodium bicarbonate solution (1×25 mL), water (1×25 mL)
7. dry with materialThe organic layer was then dried over magnesium sulfate
8. filtrationfiltered
9. concentrationconcentrated in vacuo

ORD record

ord-1cd050db7d5e499d81b51d0ab0cefbfd

Source dataset

uspto-grants-2005_04

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06881844B2