| Identification | Back Directory | [Name]
3-Methoxy-4-methylbenzeneboronic acid, 97% | [CAS]
917757-15-4 | [Synonyms]
3-Methoxy-4-methylbenzeneboronic acid, 97%
Boronic acid, B-(3-methoxy-4-methylphenyl)- | [Molecular Formula]
C8H11BO3 | [MDL Number]
MFCD08274479 | [MOL File]
917757-15-4.mol | [Molecular Weight]
165.98 |
| Chemical Properties | Back Directory | [Melting point ]
192-194°C | [Boiling point ]
318.3±52.0 °C(Predicted) | [density ]
1.14±0.1 g/cm3(Predicted) | [storage temp. ]
under inert gas (nitrogen or Argon) at 2-8°C | [pka]
8.36±0.10(Predicted) | [Appearance]
White to off-white Solid | [Water Solubility ]
Slightly soluble in water. |
| Hazard Information | Back Directory | [Uses]
It is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff. | [Synthesis]
Butyl lithium (1.6 M in hexane, 3.75 mL) was slowly added dropwise to a stirred solution of 2-methyl-5-bromoanisole (5 mmol) in tetrahydrofuran (20 mL) at -78 °C for 45 min. Subsequently, triisopropyl borate (1.75 mL, 7.5 mmol) was added to the reaction system. The reaction mixture was allowed to slowly warm to -30°C, and then 2.5 N hydrochloric acid (10 mL) was added. The mixture was gradually warmed to room temperature with stirring and diluted with ethyl acetate. The organic and aqueous layers were separated and the aqueous layer was extracted twice with ethyl acetate. The organic layers were combined, washed with brine, dried over anhydrous sodium sulfate, filtered, and concentrated in vacuum. Purification of the crude product using fast column chromatography (elution gradient: 0-40% ethyl acetate/hexane) gave 3-methoxy-4-methylphenylboronic acid as a white powder. | [References]
[1] European Journal of Medicinal Chemistry, 2018, vol. 149, p. 79 - 89 |
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