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CAS No. : | 30766-03-1 | MDL No. : | MFCD03426665 |
Formula : | C6H4BrNO2 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | RPHHYRNGCJYQSP-UHFFFAOYSA-N |
M.W : | 202.01 | Pubchem ID : | 735150 |
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 |
---|---|---|
With 4-methyl-morpholine; HATU; In N,N-dimethyl-formamide; at 20℃; for 0.5h; | Step 1: A solution of <strong>[6398-87-4]3-(1,3-dioxolan-2-yl)aniline</strong> (3.26 g, 19.7 mmol), 4-bromopicolinic acid (4.38 g, 21.7 mmol), (2-(7-Aza-1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (HATU) (8.99 g, 23.6 mmol), and N-methylmorpholine (2.6 mL, 23.6 mmol) in N,N-dimethylformamide was stirred at room temperature for 30 minutes. The solvent was removed under reduced pressure, and the residue was purified by flash chromatography (1:1 Hexanes/ethyl acetate) to afford a mixture of N-(3-(1,3-dioxolan-2-yl)phenyl)-4-bromopicolinamide acetal and the corresponding aldehyde (5.56 g, ~81% yield, contains ~15% aldehyde). M+1=349.1 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; In N,N-dimethyl-formamide; at 20℃; for 18h; | A mixture of 4-bromopicolinic acid ( 15 g, 75 mmol), methanamine hydrochloride (1 5 g, 75 mmol), HOBt (10 g, 75 mmol), EDCI (21 g, 75 mmol) and Et3N (41.5 mL, 300 mmol) in DMF(200 mL) was stirred at r.t. for 18 h. Water was added to the reaction mixture and the resulting mixture was filtered to afford 16 g of 78 as solid which was used directly in the next step. LCMS: m/z 215 (M+l )+ |
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