Benzoyl chloride → 3-benzamido-4-cyano-2,5-difluoro-N-[2,6-dimethyl-4-(1,2,2,2-tetrafluoro-1-trifluoromethyl-ethyl)-phenyl]-benzamide

Temperatur

140 °C

To a solution of 3-amino-4-cyano-2,5-difluoro-N-[2,6-dimethyl-4-(1,2,2,2-tetrafluoro-1-trifluoromethyl-ethyl)-phenyl]-benzamide (70 mg, 0.15 mmol) (Example I16) in chloroform (0.75 ml) were added 1,8-diazabicycloundec-7-ene (“DBU”) (49 μl, 0.33 mmol) and benzoyl chloride (17 μl, 0.15 mmol). The reaction mixture was heated in a microwave to 140° C. for 30 minutes. Two further portions of benzoyl chloride (17 μl, 0.15 mmol) were added and heating continued at 140° C. for 30 minutes each time. The reaction mixture was partitioned between water and chloroform. The aqueous phase was extracted twice with chloroform. The combined organic phases were dried over sodium sulfate and concentrated. The residue was purified by reverse-phase chromatography (eluent:trifluoroacetic acid/water/acetonitrile 1:4:5 to 1:1:8) to give Compound No. E36 of Table E (0.013 g, 15% yield) as an off-white solid. M.p. 245-248° C. 1H-NMR (400 MHz, CDCl3): 2.28 (6H, s), 7.38 (2H, s), 7.15-8.1 (8H, m) ppm.

1. temperatureheating
2. customThe reaction mixture was partitioned between water and chloroform
3. extractionThe aqueous phase was extracted twice with chloroform
4. dry with materialThe combined organic phases were dried over sodium sulfate
5. concentrationconcentrated
6. customThe residue was purified by reverse-phase chromatography (eluent:trifluoroacetic acid/water/acetonitrile 1:4:5 to 1:1:8)
7. customto give Compound No

ORD-Eintrag

ord-457b83b6bddc4f8fbc2855bb3509c325

Quelldatensatz

uspto-grants-2013_03

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08389766B2