3-Furanmethanol → 3-(Azidomethyl)furan

To a 50 mL round-bottomed flask equipped with a magnetic stirbar was added 3-furan methanol (1.00 g, 10.2 mmol) and a solution of diphenyl phosphoryl azide (3.37 g, 12.2 mmol) in toluene (30 mL). The stirring solution is allowed to cool to 0° C., in which 1,8 Diazabycyclo [5.4.0.] undec-7-ene (1.86 g, 12.2 mmol) was added dropwise. The reaction is allowed to slowly warm to ambient temperature for an additional 16 hours of stirring. After this period, the reaction mixture is washed with water (2×20 mL) and then with 5% HCl (20 mL). Volatiles are evaporated under reduced pressure. The resulting residue is then purified by column chromatography (1:9 ethyl acetate/hexane) providing 3-azidomethyl furan (1.19 g, 95%) as a colorless oil. 1H NMR (400 MHz, CDCl3) δ 7.46 (d, 1H), δ 7.44 (s, 1H), δ 6.42 (d, 1H), δ 4.20 (s, 2H). ppm; 13C NMR (75 MHz, CDCl3) δ144.1, 141.1, 110.4, 92.1, 45.8 ppm; LRMS (EI) calcd for C5H5N3O (M+) 123. found 123.

1. customTo a 50 mL round-bottomed flask equipped with a magnetic stirbar
2. additionwas added dropwise
3. waitAfter this period
4. washthe reaction mixture is washed with water (2×20 mL)
5. customVolatiles are evaporated under reduced pressure
6. customThe resulting residue is then purified by column chromatography (1:9 ethyl acetate/hexane)

ORD record

ord-c52a749dc00b4019b57401d5919e7d86

Source dataset

uspto-grants-2011_03

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07897631B2