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Chemical Structure| 1187449-04-2 Chemical Structure| 1187449-04-2

Structure of 1187449-04-2

Chemical Structure| 1187449-04-2

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Product Details of [ 1187449-04-2 ]

CAS No. :1187449-04-2
Formula : C5H3BrClIN2
M.W : 333.35
SMILES Code : NC1=NC=C(Cl)C(Br)=C1I
MDL No. :MFCD22418393

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Application In Synthesis of [ 1187449-04-2 ]

* 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.

  • Downstream synthetic route of [ 1187449-04-2 ]

[ 1187449-04-2 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 1187449-01-9 ]
  • [ 1187449-04-2 ]
YieldReaction ConditionsOperation in experiment
78% With Iodine monochloride; In N,N-dimethyl-formamide; at 40℃; for 31h;Inert atmosphere; Description 15 (D15); 4-bromo-5-chloro-3-iodo-2-pyridinamine; To a stirred solution of <strong>[1187449-01-9]4-bromo-5-chloro-2-pyridinamine</strong> D14) (1 1.0 g, 48.2 mmol) in N, N- dimethylformamide (430 ml_) at 400C was added iodine monochloride (9.40 g, 57.9 mmol) and allowed to stir at this temperature for 3 h. A further portion of iodine monochloride(9.40 g, 57.9 mmol) was added and allowed to stir at the same temperature for 24 h.Additional iodine monochloride (4.70 g, 28.9 mmol) added and reaction mixture allowed to stir for 4 h at 400C. Reaction mixture poured into water (1500 mL), upon addition a precipitate formed. Solid isolated, washed with water (500.00 cm3), dissolved in dichloromethane (1600 mL) and washed with 10% sodium thiosulfate solution (2 x 250 mL). Organic portion dried over sodium sulfate, filtered and solvent removed in vacuo yielding a solid (16.2 g). Material purified by column chromatography eluting with 75-100% dichloromethane in hexane followed by 1% ethyl acetate in dichloromethane. The relevant fractions were combined and solvent removed in vacuo yielding the title compound (13.8 g, 78%).1H NMR: (300 MHz, CDCI3) delta 8.00 (s, 1 H), 5.16 (s, 2H).
50% With Iodine monochloride; In N,N-dimethyl-formamide; at 40℃; 4-Bromo-5-chloropyridin-2-amine (15 g, 72 mmol) was dissolved in DMF (200 mL) and heated to 40C. Then ICl (12.2 g, 75 mmol) was added and stirred for 4 hours at 40C. ICl (13 g, 80 mmol) was supplemented and then stirred for another 4 hours, and then a third ICl (13 g, 80 mmol) was added and stirred overnight at 40C. After completion of the reaction, the reaction mixture was cooled to rt., diluted with water (200 mL), and extracted with DCM (200 mL*3). The combined organic layers were washed with an aqueous solution of sodium thiosulfate (100 mL*3) and saturated brine (100 mL*2), dried over anhydrous Na2SO4, and then filtered. The filtrate was concentrated. The residues were purified by column chromatography (eluent: PE : EtOAc, 5:1 to 1:1) to give 12g of the title compound as claybank solid (yield: 50%).
With Iodine monochloride; In N,N-dimethyl-formamide; at 40℃; A solution of Example 52A (3 g, 14.46 mmol) in N,N-dimethylformamide (60 mL) was heated to 40C and iodine chloride (2.82 g, 17.35 mmol) was added. After stirring at 40C for 3 hours, a second lot of iodine chloride (2.82 g, 17.35 mmol) was added and the mixture was stirred overnight at 40C. The mixture was cooled to room temperature and quenched with ice cold water. The mixture was extracted with ethyl acetate (100 mL x 2) and the organic layer was washed with water and brine, dried over sodium sulfate, filtered, and concentrated. Purification by column chromatography (silica gel, 20 % ethyl acetate in hexane) afforded the title compound. LCMS: 334.6 (M+H)+.
 

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