4-Bromo-3,5-dimethylpyrazole

  • Name: 4-Bromo-3,5-dimethylpyrazole
  • CAS: 3398-16-1
  • Purity: 99%
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Quality Factory Supply 99% Pure 4-Bromo-3,5-dimethylpyrazole 3398-16-1 with Efficient Delivery

  • Molecular Formula: C5H7 Br N2
  • Molecular Weight: 175.028
  • Appearance/Colour: pale white or light yellow crystal powder 
  • Melting Point: 119-121 ºC 
  • Refractive Index: 1.5500 (estimate) 
  • Boiling Point: 269.1 °C at 760 mmHg 
  • PKA: 13.83±0.50(Predicted) 
  • Flash Point: 116.5 °C 
  • PSA: 28.68000 
  • Density: 1.595 g/cm3 
  • LogP: 1.78900 

4-Bromo-3,5-dimethylpyrazole(Cas 3398-16-1) Usage

InChI:InChI=1/C5H7BrN2/c1-3-5(6)4(2)8-7-3/h1-2H3,(H,7,8)

3398-16-1 Relevant articles

Tumor microenvironment and NIR laser dual-responsive release of berberine 9-: O -pyrazole alkyl derivative loaded in graphene oxide nanosheets for chemo-photothermal synergetic cancer therapy

Cai, Shundong,Du, Peifang,Liu, Yanfei,Liu, Zhenbao,Long, Shuo,Peng, Dongming,Wang, Yirong,Wen, Nachuan,Xiong, Hongjie,Yan, Jianhua

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A berberine 9-O-pyrazole alkyl derivativ...

R4NHal/NOHSO4: A Usable System for Halogenation of Isoxazoles, Pyrazoles, and beyond

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A new convenient and versatile halogenat...

Identification of Isoform 2 Acid-Sensing Ion Channel Inhibitors as Tool Compounds for Target Validation Studies in CNS

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supporting information, p. 627 - 632 (2019/03/07)

Acid-sensing ion channels (ASICs) are a ...

A mild halogenation of pyrazoles using sodium halide salts and Oxone

Olsen, Kathryn L.,Jensen, Matthew R.,MacKay, James A.

supporting information, p. 4111 - 4114 (2017/09/29)

A mild, inexpensive, and operationally s...

3398-16-1 Process route

3,5-dimethyl-1H-pyrazole
67-51-6

3,5-dimethyl-1H-pyrazole

4-Bromo-3,5-dimethylpyrazole
3398-16-1

4-Bromo-3,5-dimethylpyrazole

Conditions
Conditions Yield
With N-Bromosuccinimide; In ethyl acetate; at 25 - 30 ℃; for 0.25h; Sonication;
100%
With N-Bromosuccinimide; In ethyl acetate; at 25 - 30 ℃; for 0.1h; ultrasound irradiation;
98%
With nitrosylsulfuric acid; nitromethane; tetramethylammonium bromide; at 0 - 20 ℃; for 20h;
95%
With bromine chloride; In dichloromethane; for 1h; Ambient temperature;
94%
With oxone; sodium bromide; In water; at 20 ℃; for 1h;
93%
With bromine; In water;
64%
With water; bromine; sodium acetate;
With bromine; In dichloromethane; at -78 - 0 ℃;
With N-Bromosuccinimide; In tetrachloromethane; for 2h; Heating;
With bromine; In dichloromethane; at -78 - 20 ℃;
Multi-step reaction with 2 steps
1: Br2 , 1N Na2 CO3 / CH2 Cl2 / 0.17 h / 0 °C
2: 8 percent / AgNO3 *P(OCH3 )3 / acetonitrile / Ambient temperature
With bromine; sodium carbonate; silver nitrate; phosphorous acid trimethyl ester; In dichloromethane; acetonitrile;
With N-Bromosuccinimide; In tetrachloromethane; dichloromethane;
With N-Bromosuccinimide; In acetone; at 25 - 30 ℃; for 8h;
With N-Bromosuccinimide; In tetrachloromethane;
With N-Bromosuccinimide; In dichloromethane; at 37 ℃; for 12h;
1-benzyl-4-bromo-3,5-dimethyl-1H-pyrazole
51108-53-3

1-benzyl-4-bromo-3,5-dimethyl-1H-pyrazole

4-Bromo-3,5-dimethylpyrazole
3398-16-1

4-Bromo-3,5-dimethylpyrazole

Conditions
Conditions Yield
With potassium tert-butylate; oxygen; dimethyl sulfoxide; at 25 ℃; for 0.166667h;
82%

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