3-Fluorobenzyl isocyanate → HCID 58055089, compound

Participants

Reaction Steps

3-Fluorobenzyl isocyanate (1.3 g, 8 mmol) was added into a mixture of Intermediate 38: 3-chloromethyl-[1,2,4]thiadiazol-5-ylamine (0.83 g, 5.5 mmol), and DMAP (22 mg, 0.14 mmol) in NMP (11 mL). The reaction mixture was heated in a microwave reactor for 1 hour at 100 C and then cooled to ambient temperature. The reaction mixture was diluted with EtOAc (75 mL) and washed with water (30 mL×2). The aqueous phase was extracted with EtOAc (40 mL×2). The combined organic layers were washed with brine, dried over Na2SO4, filtered and evaporated to give the crude product, which was purified by silica gel column chromatography to afford 1-(3-chloromethyl-[1,2,4]thiadiazol-5-yl)-3-(3-fluoro-benzyl)-urea as an off-white solid (1.2 g, 72%). LC-MS (m/z): 303.0 (M+H)

Provenance & Evidence