Dimethylamine → HCID 89677101, Verbindung

A 100 mL round-bottom flask was charged with 5-bromo-2-formylbenzoic acid (350 mg, 1.53 mmol, 1.00 equiv), N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (355 mg, 1.85 mmol, 1.20 equiv), 1-hydroxybenzotrizole (315 mg, 2.33 mmol, 1.50 equiv), dichloromethane (10 mL). The resulting solution was stirred for 15 min at room temperature. Dimethylamine (208 mg, 4.61 mmol, 3.00 equiv) was added. The resulting solution was stirred overnight at room temperature, diluted with water (20 mL), extracted with dichloromethane (3×20 mL) and the organic layers were combined, dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was chromatographed on a silica gel column with ethyl acetate/petroleum ether (50/50) to provide 86.0 mg (22% yield) of 5-bromo-2-formyl-N,N-dimethylbenzamide as light yellow oil. LCMS (ESI, m/z): 256 [M+H]+.

1. stirringThe resulting solution was stirred overnight at room temperature
2. extractionextracted with dichloromethane (3×20 mL)
3. dry with materialdried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customThe residue was chromatographed on a silica gel column with ethyl acetate/petroleum ether (50/50)

ORD-Eintrag

ord-7480c06274bb456cb7d9cae6977db51c

Quelldatensatz

uspto-grants-2015_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09133148B2