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78181

Sigma-Aldrich

Phenylboronic acid

purum, ≥97.0% (HPLC)

Synonym(s):

Benzeneboronic acid, Dihydroxyphenylborane, NSC 66487, Phenyl-boric acid, Phenylboric acid, Phenyldihydroxyborane

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About This Item

Linear Formula:
C6H5B(OH)2
CAS Number:
98-80-6
Molecular Weight:
121.93
Beilstein/REAXYS Number:
970972
EC Number:
202-701-9
MDL number:
MFCD00002103
UNSPSC Code:
12352103
PubChem Substance ID:
329768124
NACRES:
NA.22

grade

purum

Quality Level

200

assay

≥97.0% (HPLC)

form

crystals

mp

216-219 °C (lit.)
218-222 °C

SMILES string

OB(O)c1ccccc1

InChI

1S/C6H7BO2/c8-7(9)6-4-2-1-3-5-6/h1-5,8-9H

InChI key

HXITXNWTGFUOAU-UHFFFAOYSA-N

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General description

Phenylboronic acid is a highly stable receptor ligand used in cross-coupling reactions and drug delivery.

Phenylboronic acid (PBA) is an organoboronic acid. It behaves as a molecular receptor that can attach to compounds containing cis-diol group. Microwave-assisted Suzuki coupling of aryl chlorides with phenylboronic acid in the presence of Pd/C (catalyst) and water (solvent) has been described. Palladium-catalyzed cross-coupling reaction of phenylboronicacid with haloarenes to afford biaryls has been reported.

Application

Phenylboronic acid may be employed in the following reactions:
  • Rhodium-catalyzed intramolecular amination.
  • Pd-catalyzed direct arylation.
  • Mizoroki-Heck and Suzuki-Miyaura coupling reactions catalyzed by palladium nanoparticles.
  • Palladium-catalyzed stereoselective Heck-type reaction.
  • Highly effective Palladium-catalyzed arylation Suzuki-Miyaura cross-coupling in water.

Phenylboronic acid may be employed as reagent in the preparation of:
  • Ni(II) pincer complex and Pd(II) pyridoxal hydrazone metallacycles as catalysts for the Suzuki-Miyaura cross-coupling reactions.
  • N-type polymers for all-polymer solar cells.
  • Novel series of potent and selective mTOR kinase inhibitors.
  • Inhibitors of lactate dehydrogenase against cancer cell proliferation.

Other Notes

Contains varying amounts of phenylboronic anhydride

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
WXBF4507V
WXBF1935V
WXBD9259V
WXBD2122V
WXBD5283V

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Synthesis of polyfunctional glycerol esters: lipase-catalyzed esterification of glycerol with diesters.
Villeneuve P, et al.
Journal of the American Oil Chemists' Society, 75(11), 1545-1549 (1998)
Phenylboronic-acid-based functional chemical materials for fluorescence imaging and tumor therapy
Li S, et al.
ACS Omega, 7, 2520-2532 (2022)
A phenylboronate-functionalized polyion complex micelle for ATP-triggered release of siRNA.
Mitsuru Naito et al.
Angewandte Chemie (International ed. in English), 51(43), 10751-10755 (2012-08-22)
Ni(II)-POCOP pincer compound [NiCl{C10H5-2,10-(OPPh2)2}] an efficient and robust nickel catalyst for the Suzuki-Miyaura coupling reactions
Estudiante-Negrete, F.; Hernandez-Ortega, S.; Morales-Morales, D.
Inorgorganica Chimica Acta, 387, 58-63 (2012)
Dora Balogh et al.
Nano letters, 12(11), 5835-5839 (2012-10-10)
Au nanoparticles (NPs) are functionalized with chiral (R) or (S) binaphthol phenylboronic acid ligands, (1a) or (1b). The (R)- or (S)-binaphthol phenylboronic acid ligands form donor-acceptor complexes with the chiral dicationic helicene, helquat (P)-HQ(2+) or (M)-HQ(2+), (2a) or (2b). The
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