Reaktion #678289

Reaktionsgleichung

tert-Butyl 2-((2-aminoethyl)(methyl)amino)ethylcarbamate

nicotinic acid

EDCI

→

tert-butyl 2-(methyl(2-(nicotinamido)ethyl)amino)ethylcarbamate

Ausbeute 30.3%

Lösungsmittel

CH3CN

EtOAc

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe resulting reaction mixture
2. 2
   WaschenThe organic layer was washed with saturated aqueous NaHCO3, brine
3. 3
   Trocknendried over Na2SO4
4. 4
   Filtrationfiltered
5. 5
   Einengenconcentrated under reduced pressure
6. 6
   SonstigeThe resulting residue was purified by silica gel chromatography (5% MeOH—CH2Cl2)

Vorschrift

tert-Butyl 2-((2-aminoethyl)(methyl)amino)ethylcarbamate (400 mg, 1.84 mmol) was taken up in CH3CN (10 mL) along with nicotinic acid (227 mg, 1.84 mmol) and EDCI (353 mg, 2.02 mmol). The resulting reaction mixture was stirred at room temperature for 18 h and then diluted with EtOAc. The organic layer was washed with saturated aqueous NaHCO3, brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The resulting residue was purified by silica gel chromatography (5% MeOH—CH2Cl2) to afford tert-butyl 2-(methyl(2-(nicotinamido)ethyl)amino)ethylcarbamate (180 mg, 30%). MS calculated for C16H26N4O3: 322.2. found: [M+H]+ 323.

Quelle