Bromotrichloromethane → HCID 90389276, compound

Temperature

0 °C

A solution of methyl 2-(2-fluoropropanamido)-3-hydroxypropanoate (0.69 g, 3.60 mmol) in DCM (36.0 ml) was cooled to −20° C. and deoxo-fluor (50% in THF; 0.73 ml, 3.96 mmol, Fluka Chemie GmbH) was added dropwise. The reaction mixture was allowed to stir for 1 hour. Bromotrichloromethane (1.276 ml, 12.96 mmol, Sigma-Aldrich Chemical Company, Inc.) was added followed by addition of DBU (1.936 ml, 12.96 mmol, TCI). The reaction mixture was allowed to warm to 0° C. and stirred for 3 h. The reaction was quenched by the addition of aqueous, saturated NaHCO3 solution and extracted with CH2Cl2. The organic extract was washed with water, brine and dried over MgSO4. The solvent was removed in vacuo and the crude product was purified by silica gel chromatography, eluting with a gradient of 1% to 10% 2M NH3.MeOH in CH2Cl2, to provide methyl 2-(1-fluoroethyl)oxazole-4-carboxylate (0.2746 g, 1.586 mmol, 44.1% yield). MS m/z=173.9 [M]+; Calculated for C7H8FNO3: 173.049

1. stirringstirred for 3 h
2. customThe reaction was quenched by the addition of aqueous, saturated NaHCO3 solution
3. extractionextracted with CH2Cl2
4. extractionThe organic extract
5. washwas washed with water, brine
6. dry with materialdried over MgSO4
7. customThe solvent was removed in vacuo
8. customthe crude product was purified by silica gel chromatography
9. washeluting with a gradient of 1% to 10% 2M NH3

ORD record

ord-8ee93656747644fea96b2f40792ac748

Source dataset

uspto-grants-2015_07

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09085576B2