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Type | HazMat fee for 500 gram (Estimated) |
Excepted Quantity | USD 0.00 |
Limited Quantity | USD 15-60 |
Inaccessible (Haz class 6.1), Domestic | USD 80+ |
Inaccessible (Haz class 6.1), International | USD 150+ |
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Accessible (Haz class 3, 4, 5 or 8), International | USD 200+ |
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CAS No. : | 84476-99-3 | MDL No. : | MFCD04114191 |
Formula : | C5H3F2N | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | XFAMUOYNXFXQTC-UHFFFAOYSA-N |
M.W : | 115.08 | Pubchem ID : | 2762871 |
Synonyms : |
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Signal Word: | Danger | Class: | 3 |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | 1993 |
Hazard Statements: | H225-H315-H319-H335 | Packing Group: | Ⅲ |
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 |
---|---|---|
91% | With methanol; at 135℃; for 0.25h;microwave; | To a vial charged with 2,5-difluoropyridine (127 mg, 1.1 mmol) was added a 25% solution of sodium methoxide in methanol (2 mL). Upon completion of addition, the reaction mixture was heated at 135 0C under microwave conditions for 15 min. At the conclusion of this period, the reaction mixture was diluted with brine (5 mL) and extracted with EtOAc (3 x 5 mL). The combined extracts were dried over Na2SO4 and filtered. The volatiles were removed under reduced pressure to provide a residue. The residue was subjected to chromatography on silica gel eluting with 0 to 60% EtOAc/hexanes to provide Intermediate 23 as a yellow oil (139 mg, 91%). 1H NMR (400 MHz, CDCl3) delta ppm 3.80 (s, 6 H), 6.87 (t, J-2.20 Hz, 1 H), 7.78 (d, J=2.20 Hz, 2 H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With caesium carbonate; In N,N-dimethyl-formamide; at 80 - 90℃; for 6h; | To a solution of 180 (100.00mg, 515.54 umol) and 83 (71.19mg, 618.65umol) in DMF (3mL) was added solid C52CO3 (251.96mg, 773.3lumol) in one charge at room temperature. It was stilTed at 8090C for 6 hours. After cooling, water (i0mL) was added into the mixture with stirring at ice bath siowly. Gradually, solid was formed. It was filtrated. The residue was theproduct 198 (70.00 mg, cnde) which was used for next step directly.LCMS: m/z, 290.0 (M+H)t?HNMR (400 MFIz, CDCI3): 6.62 (d, .1=2.8 Hz, I H), 7.53-7.58 (in, I H), 7.97.00 (in, 1 H), 8.24 (d, J2.4 Hz, I H?), 8.31 (d, J=2.4 Hz, 1 H). |