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Chemical Structure| 87034-76-2 Chemical Structure| 87034-76-2

Structure of 87034-76-2

Chemical Structure| 87034-76-2

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Product Details of [ 87034-76-2 ]

CAS No. :87034-76-2
Formula : C6H8ClN3
M.W : 157.60
SMILES Code : NC1=C(NC)C=C(Cl)N=C1

Safety of [ 87034-76-2 ]

Application In Synthesis of [ 87034-76-2 ]

* 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 [ 87034-76-2 ]

[ 87034-76-2 ] Synthesis Path-Downstream   1~4

  • 1
  • [ 64-18-6 ]
  • [ 87034-76-2 ]
  • [ 7205-46-1 ]
YieldReaction ConditionsOperation in experiment
85% With trimethyl orthoformate; at 100.0℃; for 3h; 11.9.2 Typical example: Synthesis of 6-chloro-1-methyl-1H-imidazo[4,5-c]pyridine 2-Chloro-4-methylamino-5-aminopyridine (3.0 g, 19.0 mmol), trimethyl ortho formate (50 mL) and formic acid (1.0 mL) were stirred at 100 C for 3 h. The reaction was cooled to ambient temperature and the solvents removed under vacuum. The residue was poured into NaHCO3 solution and then extracted with AcOEt. The combined organic layers were washed with water, followed by brine and then dried over Na2SO4. The solvents were removed under vacuum to give a brown solid, which was purified by column chromatography (30% AcOEt/DCM) to give the target product as a pale brown solid (2.7 g, 85%). 1H NMR (400 MHz, DMSO) delta (ppm): 8.75 (1 H, d, J = 0.89 Hz), 8.39 (1 H, s), 7.84 (1 H, d, J = 0.90 Hz), 3.86 (3 H, s). LC-MS Rt = 1.97 min; [M+H]+ 168.
With orthoformic acid triethyl ester; at 100.0℃; for 4h; To a stirred solution of 6-Chloro-N-methyl-pyridine-3, 4-diamine (22 mmol) in trimethyl orthoformate (25 mL) was added formic acid (1 mL) and was heated ay 100C for nearly 4 h when TLC showed the completion of reaction. The reaction was allowed to cool to room temperature and water (50 mL) was added and the mixture was extracted with ethyl acetate (4x50 mL), the combined organic layers were washed with aq. NaHC03 solution, dried over anhydrous sodium sulphate and concentration under reduced pressure gave the desired product Intermediate 2. [00266] 'H-NMR (400 MHz, DMSO-i): delta 3.84 (s, 3H), 7.83 (s, 1H), 8.39 (s, 1H), 8.74 (s, 1H). [00267] Mass (M+l): w/z 168.
  • 2
  • [ 64-18-6 ]
  • [ 87034-76-2 ]
  • [ 149-73-5 ]
  • [ 7205-46-1 ]
YieldReaction ConditionsOperation in experiment
at 100.0℃; for 4h; To a stirred solution of 6-Chloro-N-methyl-pyridine-3, 4-diamine (22 mmol) in trimethyl orthoformate (25 mL) was added formic acid (1 mL) and was heated at 100C for nearly 4 h when TLC showed the completion of reaction. The reaction was allowed to cool to room temperature and water (50 mL) was added and the mixture was extracted with ethyl acetate (4x50 mL), the combined organic layers were washed with aq. NaHCC>3 solution, dried over anhydrous sodium sulphate and concentration under reduced pressure gave the desired product Intermediate 2. H-NMR (400 MHz, DMSO-i: delta 3.84 (s, 3H), 7.83 (s, 1H), 8.39 (s, 1H), 8.74 (s, 1H). Mass (M+l): m/z 168.
  • 3
  • [ 37718-11-9 ]
  • [ 87034-76-2 ]
  • [ 1612171-92-2 ]
YieldReaction ConditionsOperation in experiment
100% With polyphosphoric acid; at 150℃; for 18h;Inert atmosphere; Sealed tube; A mixture of 6-chloro-N -methylpyridine-3,4-diamine (prepared using a procedure analogous to that described for Example 7, steps 1-2) (92 mg, 0.58 mmol) and lH-<strong>[37718-11-9]pyrazole-4-carboxylic acid</strong> (67 mg, 0.58 mmol) in polyphosphoric acid (-0.5 mL) was purged with argon and heated in a sealed vial at 150 °C for 18 h with stirring. The cooled mixture was diluted with water (1 mL) and taken to pH 7 by addition of NaOH (50percent aq.). A solid precipitated which was isolated by filtration. The solid was suspended in MeOH and sonicated for 15 min. The MeOH was removed in vacuo. This process was repeated (x2) and the resulting solid was dried in vacuo to give a grey solid (130 mg, quant.). LCMS (ESI): [M+H]+ 234/236 (35C1/37C1).
  • 4
  • [ 87034-76-2 ]
  • [ 149-73-5 ]
  • [ 7205-46-1 ]
YieldReaction ConditionsOperation in experiment
38% at 100.0℃; for 4h; Into a 100-mL round-bottom flask, was placed 6-chloro-4-N-methylpyridine-3,4-diamine (500 mg, 3.17 mmol, 1 equiv), trimethoxymethane (20 mL). The resulting solution was stirred for 4 h at 100 C in an oil bath. The resulting mixture was concentrated under vacuum. The crude product was purified by Flash-Prep-HPLC A. This resulted in 200 mg (38%) of the title compound as a solid. Analytical Data: LC-MS: (ES, m/z): 168 [M+l], R: 0.841 min.
 

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