Triethylamine → HCID 22060166, compound

Temperature

140 °C

A mixture of 2-amino-5-bromo-3-methylpyridine (1.41 g, 7.53 mmol), N-methyl-N-(tert-butoxycarbonyl)-4-penten-2-amine (1.50 g, 7.53 mmol), palladium(II) acetate (33.8 mg, 0.15 mmol), tri-o-tolylphosphine (183.2 mg, 0.60 mmol), triethylamine (4.50 mL, 32.3 mmol), and anhydrous acetonitrile (8 mL) was stirred and heated at 130–132° C. in a sealed glass tube for 18 h. The mixture was further heated at 140° C. for 84 h. The resulting dark-brown solution was cooled to ambient temperature and concentrated by rotary evaporation. The residue was diluted with water (25 mL) and extracted with CH2Cl2 (3×25 mL). The combined CH2Cl2 extracts were dried (Na2SO4), filtered, concentrated by rotary evaporation, and vacuum dried producing a dark-brown oil (2.84 g). The crude product was purified by column chromatography on silica gel (135 g), eluting with ethyl acetate-hexane (3:1, v/v) to remove impurities, followed by elution with CH3OH-Et3N (98:2, v/v) to collect the product. Fractions containing the product (Rf 0.70) were combined and dissolved in CHCl3. The CHCl3 solution was dried (Na2SO4), filtered, concentrated by rotary evaporation, and vacuum dried to give 1.11 g (48.4%) of an amber-brown oil.

1. temperatureheated at 130–132° C. in a sealed glass tube for 18 h
2. temperatureThe resulting dark-brown solution was cooled to ambient temperature
3. concentrationconcentrated by rotary evaporation
4. additionThe residue was diluted with water (25 mL)
5. extractionextracted with CH2Cl2 (3×25 mL)
6. dry with materialThe combined CH2Cl2 extracts were dried (Na2SO4)
7. filtrationfiltered
8. concentrationconcentrated by rotary evaporation, and vacuum
9. customdried

ORD record

ord-ef642ecdbde14bdf87c07795cc096c0b

Source dataset

uspto-grants-2006_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07045538B2