4-Fluorobenzyl chloride → [1-(4-Fluoro-benzyl)-piperidin-4-yl]-(5-trifluoromethyl-[1,3,4]thiadiazol-2-yl)-amine

Temperatur

120 °C

A mixture of piperidin-4-yl-(5-trifluoromethyl-[1,3,4]thiadiazol-2-yl)-amine (D4) (0.040 g, 0.16 mmol), 4-fluorobenzyl chloride (0.023 ml, 0.19 mmol) and diisopropylethylamine (0.042 ml, 0.24 mmol) in acetonitrile (3 ml) was stirred at 120° C. for 30 min., under microwave irradiation. After cooling to room temperature, the reaction mixture was diluted with dichloromethane and extracted with a 10% solution of ammonium chloride (25 ml). The organic layer was separated, dried (Na2SO4) and the solvent evaporated in vacuo. The crude product was purified by flash column chromatography (silica gel; 0-3% ammonia in methanol (7M)/dichloromethane) to yield E4 (0.042 g, 73%) as a solid. C15H16F4N4S requires 360. Found 361 (MH+).

1. temperatureAfter cooling to room temperature
2. extractionextracted with a 10% solution of ammonium chloride (25 ml)
3. customThe organic layer was separated
4. dry with materialdried (Na2SO4)
5. customthe solvent evaporated in vacuo
6. customThe crude product was purified by flash column chromatography (silica gel; 0-3% ammonia in methanol (7M)/dichloromethane)

ORD-Eintrag

ord-afbbb94f430341bc885eaf9bc3c299cd

Quelldatensatz

uspto-grants-2015_01

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08933101B2