Phosgene → 3-Benzyl-1-(2-bromo-5-trifluoromethyl-benzyl)-1-ethyl-urea

To a solution of (2-bromo-5-trifluoromethyl-benzyl)-ethyl-amine (1.5 g, 5.3 mmol) in CH2Cl2 (20 mL) at 0° C. was added diisopropylethylamine (1.7 mL, 13.3 mmol). Phosgene (1.9M in toluene; 4.2 mL, 8.0 mmol) was then added dropwise, and the reaction was stirred for 2 hours. Triethylamine (1.48 mL, 10.6 mmol) was added, followed by benzylamine (0.87 mL, 8.0 mmol), and the reaction was stirred at room temperature for 2.5 hours. After work-up with CH2Cl2 and H2O, the crude material was purified by silica gel chromatography to give the title compound.

1. stirringthe reaction was stirred at room temperature for 2.5 hours
2. customAfter work-up with CH2Cl2 and H2O, the crude material was purified by silica gel chromatography

ORD record

ord-617a20b6ea594e2a9f0ac9bb74e3818f

Source dataset

uspto-grants-2011_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08067445B2