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Chemical Structure| 91331-85-0 Chemical Structure| 91331-85-0

Structure of 91331-85-0

Chemical Structure| 91331-85-0

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Product Details of [ 91331-85-0 ]

CAS No. :91331-85-0
Formula : C11H13N3O
M.W : 203.24
SMILES Code : NC1=CC(C)=NN1C2=CC=CC=C2OC
MDL No. :MFCD04061381

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Application In Synthesis of [ 91331-85-0 ]

* 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 [ 91331-85-0 ]

[ 91331-85-0 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 1118-61-2 ]
  • [ 6971-45-5 ]
  • [ 91331-85-0 ]
YieldReaction ConditionsOperation in experiment
95% 2.000 g (11.453 mmol) of <strong>[6971-45-5]2-methoxyphenylhydrazine hydrochloride</strong> was put in 10 ml of IN hydrochloric acid and 0.997 g (12.140 mmol) of 3-aminocrotonic nitrile was added. The mixture was stirred for 18 h at 1000C. After cooling, the pH value of the mixture was adjusted with IN sodium hydroxide solution to pH > 12. It was extracted with dichloromethane three times. The combined organic phases were washed with saturated aqueous sodium chloride solution, dried over sodium sulfate and concentrated in a rotary evaporator at reduced pressure. The product was dried under high vacuum. We obtained 2.430 g (purity according to LC-MS 91%, 95% of theor.) of the target compound.LC-MS (method 3): R, = 0.31 min; MS (EIpos): m/z = 204 [M+H]+.
86% IM07: 2-(2-Methoxy-phenyl)-5-methyl-2H-pyrazol-3-ylamineTo a solution of (2-methoxy-phenyl)-hydrazine HCl salt (10.0 g, 57.3 mmol) in concentrated aqueous HCl (50 mL) was added 3-amino-but-2-enenitrile (5.0 g, 60.9 mmol) at room temperature. The reaction temperature was increased to 100 C. and the mixture was stirred at this temperature for 18 h. The reaction mixture was cooled to room temperature and then poured into ice-cold 2N NaOH solution (200 mL). The resulting mixture was filtered. The remanens was washed with water (200 mL) and dried in vacuo to give the title compound as an off-white solid (10.0 g, 86%). 1H NMR (DMSO-d6, 400 MHz) delta 7.39-7.35 (1H, m), 7.24-7.22 (1H, m), 7.17-7.15 (1H, m), 7.03-6.99 (1H, m), 5.21 (1H, s), 4.76 (2H, s), 3.78 (3H, s), 2.02 (3H, s).
86% With hydrogenchloride; at 20 - 100℃; for 18h; General procedure: To a solution of (2-methoxy-phenyl)-hydrazine HCI salt (10.0 g, 57.3 mmol) in concentrated aqueous HCI (50 mL) was added 3-amino-but-2-enenitrile (5.0 g, 60.9 mmol) at room tem- perature. The reaction temperature was increased to 100 C and the mixture was stirred at this temperature for 18 h. The reaction mixture was cooled to room temperature and then poured into ice-cold 2N NaOH solution (200 mL). The resulting mixture was filtered. The re- manens was washed with water (200 mL) and dried in vacuo to give the title compound as an off-white solid (10.0 g, 86 %). 1 H NMR (DMSO-d6, 400 MHz) delta 7.39-7.35 (1 H, m), 7.24-7.22 (1 H, m), 7.17-7.15 (1 H, m), 7.03-6.99 (1 H, m), 5.21 (1 H, s), 4.76 (2H, s), 3.78 (3H, s), 2.02 (3H, s).
 

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