CAS 720702-41-0: Boronic acid, (1-methyl-1H-pyrazol-5-yl)-

1-Methyl-1H-pyrazole-5-boronic acid

1-Methyl-1H-pyrazole-5-boronic acid is an organic chemical compound that is used as a reagent in the synthesis of other compounds. It has been used as a synthetic intermediate for pharmaceuticals and agrochemicals, in particular fungicides. 1-Methyl-1H-pyrazole-5-boronic acid can be prepared by the reaction of benzoyl chloride with pinacol ester and a chloride ion. 1-Methyl-1H-pyrazole-5-boronic acid is also used in the Suzuki coupling reaction to synthesize various heterocyclic compounds, such as indoles. The palladium catalyst facilitates this reaction by reducing the amount of energy required for the reaction to occur, which is why it is sometimes called "Pd(0) catalysis".