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2-(3-Methylbutyl)-2H-pyrazole-3-boronic acid synthesis

1synthesis methods
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Yield:847818-66-0 63%

Reaction Conditions:

Stage #1: 1-(3-methylbutyl)-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]