2-Thiophenecarbonyl chloride → N-(3-Morpholinopropyl)-N-(4-(3-phenylisoxazol-5-yl)thiazol-2-yl)thiophene-2-carboxamide

Temperature

80 °C

A mixture of 2-bromo-1-(3-phenylisoxazol-5-yl)ethan-1-one (160 mg, 0.6 mmol) and (3-morpholin-4-yl-propyl)-thiourea (122 mg, 0.6 mmol) in dry dioxane (5 ml) was heated at 80° C. for 2 h, cooled to room temperature, and concentrated in vacuo. The resulting residue was suspended in dichloromethane (5 mL) followed by the addition of N,N-diisopropylethylamine (209 μL, 1.2 mmol) and thiophene-2-carbonyl chloride (96 μL, 0.9 mmol). The reaction mixture was maintained at room temperature overnight, then concentrated in vacuo. The resulting residue was dissolved in DMSO (2.5 mL) and subjected to HPLC purification (Method Y). The resulting free amine was dissolved in MeOH (1 mL) and 1M HCl/ether (50 mL) was added. The precipitate was filtered and dried in vacuo to provide the title compound (155 mg) as an off-white solid as the hydrochloride salt. LC/MS (ESI) m/z 481.1 [M+H]. HPLC retention time (Method B)=2.94 min.

1. temperaturecooled to room temperature
2. concentrationconcentrated in vacuo
3. temperatureThe reaction mixture was maintained at room temperature overnight
4. concentrationconcentrated in vacuo
5. dissolutionThe resulting residue was dissolved in DMSO (2.5 mL)
6. customsubjected to HPLC purification (Method Y)
7. dissolutionThe resulting free amine was dissolved in MeOH (1 mL)
8. addition1M HCl/ether (50 mL) was added
9. filtrationThe precipitate was filtered
10. customdried in vacuo

ORD record

ord-f070a6b203a24f7ba8950c9258e092c2

Source dataset

uspto-grants-2008_08

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07410988B2