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| | 4-Amino-2,6-dibromopyridine Basic information | | Uses |
| Product Name: | 4-Amino-2,6-dibromopyridine | | Synonyms: | 2,6-DibroMo-4-aMinopyridine;2,6-DibroMo-4-pyridinaMine;4-Amino-2,6-dibromopyridine 95+%;SA037318;4-Pyridinamine, 2,6-dibromo-;2,6-Dibromopyridine-4-amine;4-Amino-2,6-dibromopyridine ISO 9001：2015 REACH;2,6-dibromopyridin-4-amine | | CAS: | 39771-34-1 | | MF: | C5H4Br2N2 | | MW: | 251.91 | | EINECS: | | | Product Categories: | | | Mol File: | 39771-34-1.mol |  |
| | 4-Amino-2,6-dibromopyridine Chemical Properties |
| Melting point | 205-207 °C(Solv: hexane (110-54-3); benzene (71-43-2)) | | Boiling point | 373.7±37.0 °C(Predicted) | | density | 2.147±0.06 g/cm3(Predicted) | | storage temp. | under inert gas (nitrogen or Argon) at 2–8 °C | | form | solid | | pka | 0.80±0.50(Predicted) | | color | Off-white | | InChI | InChI=1S/C5H4Br2N2/c6-4-1-3(8)2-5(7)9-4/h1-2H,(H2,8,9) | | InChIKey | NTFZVUOMTODHRO-UHFFFAOYSA-N | | SMILES | C1(Br)=NC(Br)=CC(N)=C1 | | CAS DataBase Reference | 39771-34-1 |
| | 4-Amino-2,6-dibromopyridine Usage And Synthesis |
| Uses | 2,6-Dibromo-4-aminopyridine can be used as a pharmaceutical synthesis intermediate. | | Synthesis | c) Synthesis of 2,6-dibromopyridin-4-amine: iron powder (1.26 g, 22.56 mmol) was slowly added to a stirring solution of 2,6-dibromo-4-nitropyridine 1-oxide (Preparation 22b, 1.68 g, 5.64 mmol) in acetic acid (16 mL) at 0 °C. The reaction mixture was stirred continuously for 1 hour at room temperature. Upon completion of the reaction, water and ethyl acetate were added to the mixture for extraction. The organic layer was separated and washed sequentially with water, saturated aqueous potassium carbonate solution and brine, followed by drying with anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure to give 2,6-dibromo-4-aminopyridine as a white solid (1.35 g, 96% yield).LRMS (m/z): 251/253/255 (M + 1)+.1H NMR (400 MHz, chloroform-d) δ ppm 4.33 (br.s., 2H), 6.68 (s, 2H). | | References | [1] Patent: WO2012/41476, 2012, A1. Location in patent: Page/Page column 58-59
[2] Patent: EP2441755, 2012, A1. Location in patent: Paragraph 0174
[3] Patent: US2012/88750, 2012, A1. Location in patent: Page/Page column 22
[4] Tetrahedron Letters, 2011, vol. 52, # 44, p. 5728 - 5732
[5] Chemistry - A European Journal, 2013, vol. 19, # 41, p. 13745 - 13760 |
| | 4-Amino-2,6-dibromopyridine Preparation Products And Raw materials |
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