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Merck

165336

Sigma-Aldrich

Methylborsäure

97%

Synonym(e):

Methanboronsäure

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About This Item

Lineare Formel:
CH3B(OH)2
CAS-Nummer:
Molekulargewicht:
59.86
Beilstein:
1731087
MDL-Nummer:
UNSPSC-Code:
12352103
PubChem Substanz-ID:
NACRES:
NA.22

Qualitätsniveau

Assay

97%

Form

solid

mp (Schmelzpunkt)

91-94 °C (lit.)

SMILES String

CB(O)O

InChI

1S/CH5BO2/c1-2(3)4/h3-4H,1H3

InChIKey

KTMKRRPZPWUYKK-UHFFFAOYSA-N

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Anwendung

Methylboronic acid can be used as a reagent:
  • In the palladium-catalyzed Stille and Suzuki-Miyaura cross-couplings.
  • In the microwave-heated heterogeneous palladium (Pd)-catalytized reactions.
  • In ruthenium (Ru)-catalyzed silylation reactions
  • To prepare bis(aminotropone) titanium (Ti) catalysts for ethylene polymerizations.
  • In the enantioselective asymmetric bromoaminocyclization and bromoaminocyclization using amino-thiocarbamate catalysts.
  • To prepare common building blocks for pharmaceuticals and agrochemicals.
  • To prepare chrysin analogs by Suzuki-Miyaura coupling reactions.
  • To prepare casein kinase I inhibitors.
  • In the divergent C-H functionalizations directed by sulfonamide pharmacophores in drug discovery.
  • In the synthesis of unsymmetrical monosulfides from disulfides via copper-catalyzed coupling with boronic acids.
  • In a palladium-catalyzed coupling with enol tosylates.
  • For derivatizing many carbohydrates and biologically active compounds for GLC analysis.

Piktogramme

Exclamation mark

Signalwort

Warning

Gefahreneinstufungen

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Zielorgane

Respiratory system

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

dust mask type N95 (US), Eyeshields, Gloves


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Dietrich Steinhuebel et al.
The Journal of organic chemistry, 70(24), 10124-10127 (2005-11-19)
[reaction: see text] Herein we demonstrate functionalized enol tosylates to be robust substrates that undergo Suzuki-Miyaura, Sonogashira, and Stille cross-coupling reactions to provide stereodefined trisubstituted unsaturated esters.
Ben W Glasspoole et al.
Chemical communications (Cambridge, England), 48(9), 1230-1232 (2011-12-20)
Palladium-catalyzed cross-coupling reactions of secondary allylic boronic esters with iodoarenes were demonstrated under the conditions previously described for the coupling of benzylic substrates. The regioselectivity of the process was largely dictated by the pattern of olefin substitution.
A comparative study of ethylene polymerization by bis(aminotropone) Ti catalysts
Goldani, M. T.; et al.
Polym. Bull., 68, 755-773 (2012)
Ling Zhou et al.
Journal of the American Chemical Society, 132(44), 15474-15476 (2010-10-16)
A novel amino-thiocarbamate-catalyzed bromolactonization of unsaturated carboxylic acids has been developed. The scope of the reaction is evidenced by 22 examples of γ-lactones with up to 99% yield and 93% ee. The protocol was applied in the enantioselective synthesis of
Ling Zhou et al.
Journal of the American Chemical Society, 133(24), 9164-9167 (2011-05-05)
A facile and efficient enantioselective bromoaminocyclization of unsaturated sulfonamides has been developed using an amino-thiocarbamate catalyst. A range of enantioenriched pyrrolidines were prepared with up to 99% yield and 99% ee. The corresponding lactams could be obtained through oxidation of

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