Dimethylformamide → 2-(2-(2-Azidoethoxy)ethoxy)ethanol

Temperature

80 °C

Compound 3 (10.0 g, 59.50 mmol) was dissolved in anhydrous DMF (200 mL), to which NaN3 (77.3 g, 119.00 mmol) was added and reaction mixture stirred at 80° C. or 48 hours. Solvents were removed under reduced pressure and residue dissolved in DCM (200 mL), washed with water (400 mL) and brine (100 mL) before being dried over Na2SO4. Solvent was evaporated under reduced pressures and residue purified by silica gel column chromatography using EA:hexane (6:4) to obtain 4 as a liquid (7.80 g, 75% yield). 1H-NMR (500 MHz, CDCl3): δ 2.34 (d, 1H, J=5.5 Hz, OH), 3.93 (t, 2H, J=6.0 Hz, Ha), 3.61 (t, 2H, J=4.5 Hz, Hb), 3.65-3.68 (m, 6H, Hc, He, Hf), 3.73 (q, 2H, J=5.5 Hz, Hd); 13C-NMR (125 MHz, CDCl3): δ 50.62 (Ca), 61.73 (Cf), 70.02 (Cb), 70.36 (Ce), 70.63 (Cc), 72.45 (Cd). EI-MS: [M+Na]+ C6H13N3NaO3 calcd 198.08, obsd 198.07

1. additionwas added
2. customreaction mixture
3. customSolvents were removed under reduced pressure and residue
4. dissolutiondissolved in DCM (200 mL)
5. washwashed with water (400 mL) and brine (100 mL)
6. dry with materialbefore being dried over Na2SO4
7. customSolvent was evaporated under reduced pressures and residue
8. custompurified by silica gel column chromatography

ORD record

ord-bfd14f6b1cba44739e3e344ad57d6658

Source dataset

uspto-grants-2016_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09345781B2