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2-Isobutyl-2H-pyrazole-3-boronic acid synthesis

1synthesis methods
725746-81-6 Synthesis
1-Isobutyl-1H-pyrazole

725746-81-6
31 suppliers
$65.00/1g

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Yield:847818-64-8 54%

Reaction Conditions:

Stage #1: 1-isobutyl-1H-pyrazolewith n-butyllithium in tetrahydrofuran;hexane at 5 - 20; for 1 h;
Stage #2: with Trimethyl borate in tetrahydrofuran;hexane at -70; for 0.5 h;
Stage #3: with ammonium chloride in tetrahydrofuran;hexane at -15 - 20; for 1 h;

References:

Ivachtchenko, Alexandre V.;Kravchenko, Dmitry V.;Zheludeva, Valentina I.;Pershin, Dmitry G. [Journal of Heterocyclic Chemistry,2004,vol. 41,# 6,p. 931 - 939]