Pyridine → 4-Chloro-2-(2,6-dichloro-4-iodophenyl)thiazolo[5,4-c]pyridine

Temperatur

90 °C

A mixture of 2,6-dichloro-N-(2-chloro-3-fluoropyridin-4-yl)-4-iodobenzimidoyl chloride (2.94 g, 6.30 mmol), thiourea (1.93 g, 25.3 mmol) and pyridine (1.73 mL, 21.4 mmol) in isopropanol (25 mL) was heated to 90° C. for 3.5 hours. Triethylamine (5.3 mL, 37.8 mmol) was added and the resulting mixture was heated to 90° C. for a further 1.5 h. The reaction was cooled to room temperature and then concentrated under reduced pressure. The resultant residue was partitioned between DCM and water. The organic layer was separated, dried over Na2SO4 and concentrated under reduced pressure. The residue was triturated with MeOH and dried under reduced pressure to give the desired compound (2.33 g, 84% yield). 1H NMR (300 MHz, CDCl3): δ 8.52 (d, J=5.6 Hz, 1H), 7.98 (d, J=5.6 Hz, 1H), 7.90-7.81 (s, 2H).

1. temperaturethe resulting mixture was heated to 90° C. for a further 1.5 h
2. temperatureThe reaction was cooled to room temperature
3. concentrationconcentrated under reduced pressure
4. customThe resultant residue was partitioned between DCM and water
5. customThe organic layer was separated
6. dry with materialdried over Na2SO4
7. concentrationconcentrated under reduced pressure
8. customThe residue was triturated with MeOH
9. customdried under reduced pressure

ORD-Eintrag

ord-59b698bf1f0c4408ba770ba0f95c2f48

Quelldatensatz

uspto-grants-2014_04

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08697708B2