Nitrogen → HCID 21972708, compound

In a flame dried round-bottomed flask equipped with a magnetic stir bar and under inert atmosphere (N2), a solution of 1-(5-hydroxymethyl-furan-2-yl)-ethanone (2.00 g, 14.27 mmol) in dry CH2Cl2 (29 mL) was treated at 0° C. with Et3N (2.58 mL, 18.55 mmol) followed by DMAP (178 mg, 1.43 mmol) and Ms-Cl (1.33 mL, 17.13 mmol). After stirring at rt for 3 h, the reaction was quenched with water. The layers were separated and the aq. layer extracted with CH2Cl2 (3×). The org. layer was dried over MgSO4, filtered, and the solvents were removed under reduced pressure to give crude 1-(5-chloromethyl-furan-2-yl)-ethanone as a brown oil. Part of this crude material (2.33 g, 14.72 mmol) was dissolved in dry DMF (50 mL) and treated with NaN3 (2.90 g, 44.16 mmol) at 80° C. for 24 h. The reaction mixture was then cooled down to rt and partitioned between EA and water. The layers were separated and the aq. layer extracted with EA (1×). The combined org. extracts were dried over Na2SO4, filtered and concentrated under reduced pressure to give crude 1-(5-azidomethyl-furan-2-yl)-ethanone as a brown oil. LC-MS-conditions 02: tR=0.81 min; [M+AcCN+H]+=207.50.

1. customthe reaction was quenched with water
2. customThe layers were separated
3. extractionthe aq. layer extracted with CH2Cl2 (3×)
4. dry with materiallayer was dried over MgSO4
5. filtrationfiltered
6. customthe solvents were removed under reduced pressure

ORD record

ord-4970143265d64496877e57da29f393a4

Source dataset

uspto-grants-2013_10

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08563714B2