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Chemical Structure| 199172-01-5 Chemical Structure| 199172-01-5

Structure of 199172-01-5

Chemical Structure| 199172-01-5

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Product Details of [ 199172-01-5 ]

CAS No. :199172-01-5
Formula : C9H9BrN2
M.W : 225.09
SMILES Code : CCC1=NNC2=C1C=CC(Br)=C2
MDL No. :MFCD11044593

Safety of [ 199172-01-5 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Application In Synthesis of [ 199172-01-5 ]

* 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 [ 199172-01-5 ]

[ 199172-01-5 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 259750-61-3 ]
  • [ 199172-01-5 ]
YieldReaction ConditionsOperation in experiment
91% With hydrazine hydrate; In dimethyl sulfoxide; at 130℃; for 22.0h; Intermediate 101 6-bromo-3-ethyl-1H-indazole To a solution of intermediate 100 (4.3 g, 18.53 mmoles) in DMSO (4.5 ml), hydrazine hydrate 17.3 ml, 357.7 mmoles) was added at room temperature and heated to 130 C. After 22 h, the reaction mixture cooled to room temperature, quenched with water and solid precipitated was filtered and dried under vacuum to afford the title compound as colourless solid (3.8 g, 91% yield). 1H-NMR (delta ppm, DMSO-d6, 400 MHz): delta 12.73 (s, 1H), 7.70 (d, J=8.6 Hz, 1H), 7.66 (d, J=1.1 Hz, 1H), 7.18 (dd, J=8.5, 1.5 Hz, 1H), 2.92 (q, J=7.6 Hz, 2H), 1.30 (t, J=7.6 Hz, 3H).
0.95 g With hydrazine hydrate; In 1,4-dioxane; at 110℃; for 17.0h; To a solution of the compound [140-2] obtained in the process (2) (1.84 g) in 1,4-dioxane (20 mL) was added hydrazine monohydrate (1.2 mL) at room temperature, and the reaction mixture was stirred at 110C for 17 hours. To the reaction mixture was added 0.1N-hydrochloric acid, and then extracted with ethyl acetate. The obtained organic layer was dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography to give the titled compound (0.95 g) as a white solid. 1H-NMR (400 MHz, CDCl3) delta: 10.50-9.50 (1H, br), 7.61 (1H, s), 7.57 (1H, d, J = 8.5 Hz), 7.28-7.21 (1H, m), 3.00 (2H, q, J = 7.6 Hz), 1.41 (3H, t, J = 7.6 Hz).
 

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