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436836

Sigma-Aldrich

2-Thienylboronic acid

≥95.0%

Synonym(s):

2-Thienylboric acid, 2-Thienylboronic acid, Thien-5-ylboronic acid, Thiophene-2-boronic acid

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About This Item

Empirical Formula (Hill Notation):
C4H5BO2S
CAS Number:
Molecular Weight:
127.96
Beilstein:
112375
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

≥95.0%

form

solid

mp

138-140 °C (lit.)

storage temp.

2-8°C

SMILES string

OB(O)c1cccs1

InChI

1S/C4H5BO2S/c6-5(7)4-2-1-3-8-4/h1-3,6-7H

InChI key

ARYHTUPFQTUBBG-UHFFFAOYSA-N

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Application

Reagent used for
  • Palladium-catalyzed Suzuki-Miyaura cross-couplings
  • Alkylation, boration, coupling reaction, Suzuki coupling, and halogenation of fluorenyl bromide
  • Chain-growth catalyst transfer polycondensation of conjugated alternating copolymer
  • Ferric perchlorate-promoted reaction of fullerene to give fullerenyl boronic esters
  • Ligand-free Suzuki, Sonogashira, and Heck cross-coupling reactions
  • Copper-catalyzed nitration reactions
  • Geometry relaxation-induced Large Stokes shift in red-emitting borondipyrromethenes (BODIPY) and applications in fluorescent thiol probes

Reagent used in Preparation of
  • Photophysical properties of oxygen-containing polycyclic aromatic triptycenes
  • Donor unit for donor-acceptor-type polymers via N-alkylation, Suzuki coupling, and bromination
  • Aminopyridine-based inhibitors of mitotic kinase Nek2 with potential antipoliferative effects in cancer tumors

Other Notes

Contains varying amounts of anhydride

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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