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CAS No. : | 190011-87-1 | MDL No. : | MFCD01631323 |
Formula : | C7H3ClF2O | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | HFKZZEDGXXYRDW-UHFFFAOYSA-N |
M.W : | 176.55 | Pubchem ID : | 736338 |
Synonyms : |
|
Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H315-H319-H335 | Packing Group: | |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | With potassium carbonate; In tetrahydrofuran; for 72h; | To 3-chloro-2,6-difluorobenzaldehyde (5 g, 28.3 mmol) was added tert-butyl 2- (dimethoxyphosphoryl)acetate (5.62 mL, 28.3 mmol), TetaF (25 mL) and potassium carbonate (11.74 g, 85 mmol). The yellow suspension was stirred 72 h. The reaction was quenched with water (30 mL). The reaction prodcut was extracted with ethyl acetate (3 x 500 mL). The combined organic layers were washed with brine (20 mL) and dried (nua2SO4). Filtration and concentration afforded 57A (97.9 g,100percent yield) as a yellow solid. LCMS m/z 219 (M+eta-t-butyl).+ 1H nuMR (400 MHz, CDCl3) delta: 7.63 (d, J=16.42 Hz, 1 H), 7.30 - 7.40 (m, 1 H), 6.85 - 6.96 (m, 1 H), 6.68 (d, J=16.42 Hz, I H), 1.54 (s, 9 H) ppm. |
59.2% | With potassium tert-butylate; In tetrahydrofuran; for 2h; | To a solution of Intermediate 15A (0.94 g, 5.32 mmol) in THF (30 ml) were added tert-butyl 2-(dimethoxyphosphoryl)acetate (1.194 g, 5.32 mmol) and KC Bu (0.896 g, 7.99 mmol). After 2h, the reaction was diluted with EtOAc, washed with H20, brine, dried over MgS04, filtered and concentrated. Purification by normal phase chromatography provided Intermediate 15B (0.866 g, 59.2 percent yield), as a clear colorless oil. MS (ESI) m/z: 219.2 (M-3/4u+H)+. |
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