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Chemical Structure| 58432-26-1 Chemical Structure| 58432-26-1

Structure of 58432-26-1

Chemical Structure| 58432-26-1

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Product Details of [ 58432-26-1 ]

CAS No. :58432-26-1
Formula : C9H8BrN3
M.W : 238.08
SMILES Code : BrCC1=CN(C2=CC=CC=C2)N=N1
MDL No. :MFCD16622139

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Application In Synthesis of [ 58432-26-1 ]

* 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 [ 58432-26-1 ]

[ 58432-26-1 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 103755-58-4 ]
  • [ 58432-26-1 ]
YieldReaction ConditionsOperation in experiment
84% With phosphorus tribromide; In benzene; for 2h;Heating; Phosphorus(III) bromide, 9.7 mL (0.05 mol), was added with vigorous stirring to a solution of 8.75 g (0.05 mol) of (1-phenyl-1H-1,2,3-triazol-4-yl)metha-nol (11) in 200 mL of anhydrous benzene. The mixture was heated for 2 h and cooled, 50 g of crushed ice was added, and the mixture was neutralized with a saturat-ed solution of sodium carbonate. The organic layer was separated and washed with a saturated solution of sodium carbonate, and the solvent was evaporated under reduced pressure. Yield 10.0 g (84%), mp 124-126C. 1 H NMR spectrum (500 MHz, DMSO-d 6 ), delta, ppm: 4.84 s (2H, CH 2 ), 7.52 t (1H, p-H, J = 7.2 Hz), 7.62 t (2H, m-H, J = 7.2 Hz), 8.92 s (1H, 5-H), 7.91 d (2H o-H, J = 7.2 Hz). Mass spectrum, m/z (I rel , %): 238 (100), 240 (97) [M + H] + . Found, %: C 45.23; H 3.30; N 17.62. C 9 H 8 BrN 3 . Calculated, %: C 45.40; H 3.39; N 17.65.
48% With phosphorus tribromide; In dichloromethane; at 20℃; To a solution of primary alcohol intermediate 43 (1.7 g, 9.71 mmol) in anhydrous DCM (20 mL) was added PBr3 (7.89 g, 29.13 mmol) at room temperature. The reaction mixture was stirred at room temperature overnight. The reaction mixture was quenched by adding H2O (20 mL) slowly, adjusted the pH to 7-8 with NaHCO3. The organic phase was separated and aqueous layer was extracted with DCM (20 mL × 2). The combined organic layers were dried over Na2SO4. The solvent was removed in vacuo and the residue was purified by silica gel column (PE/EtOAc = 4:1) to afford bromine intermediate 44 (1.11 g, 48%) as a white solid. Mp: 126-130 C, TLC Rf = 0.70 (PE/EtOAc = 2:1); 1H NMR (600 MHz, CDCl3, delta ppm): 8.02 (s, 1H), 7.74-7.72 (m, 2H), 7.56-7.53 (m, 2H), 7.48-7.45 (m, 1H), 4.66 (s, 2H); MS (ESI) m/z calcd for C9H8BrN3 [M +2 + H]+: 240.0, found: 240.2.
 

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