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HONGKUN / PRODUCT DIRECTORY

2-Bromobiphenyl | CAS 2052-07-5

An ortho-brominated biphenyl building block for elaborating biaryl structures, including materials research, with the aryl bromide positioned beside the inter-ring bond and a need for positional-isomer-specific qualification.

CAS2052-07-5
Molecular formulaC12H9Br
Molecular weight233.10 g/mol

Product overview

Two benzene rings are connected by a single bond, and bromine occupies the neighbouring position on one ring. This is different from 4-bromobiphenyl, where the reactive site is farther from the inter-ring connection. The brominated carbon offers a point for planned coupling or organometallic elaboration. TCI includes the compound in its organic-semiconductor building-block collection. For qualification, verify the 2-position spectroscopically and use a chromatographic assay that separates biphenyl and other bromobiphenyl isomers when relevant.

Chemical identity

Chemical name
2-Bromobiphenyl
CAS number
2052-07-5
Molecular formula
C12H9Br
Molecular weight
233.10 g/mol

Application context

Materials development can use the ortho-bromobiphenyl framework as a starting scaffold for more elaborate aromatic molecules. Its value lies in the combination of an existing biaryl connection and a neighbouring aryl bromide reaction site. When the next step is catalysed coupling, establish positional purity first and add process-relevant water or metal controls only when justified by the intended route. A building-block qualification should be followed by evaluation of the actual downstream material, with its own optical or electronic requirements.

Chemistry and synthetic role

A C–Br bond is ortho to the bond joining the two phenyl rings.

Quality review

Locate the ortho bromine

Request structural evidence distinguishing 2- from 4-bromobiphenyl.

Resolve biphenyl-related components

Specify GC separation and reporting for relevant unbrominated and brominated components.

Tie trace controls to the route

Add water or metal tests according to the intended coupling and final-material needs.

Preparing a specification

Specify the 2-isomer, structural identity, GC purity and biphenyl-related impurities, plus justified process-specific trace limits.

Packaging and storage

Packaging and net weight are agreed for the selected grade, order quantity and destination. Check the actual supplier SDS and label for storage and transport requirements.

Documentation

Request a batch COA, SDS and the analytical methods for the acceptance criteria below. Confirm which supporting chromatograms and identity data are available from the selected manufacturer.

Procurement questions

Are bromobiphenyl isomers interchangeable?

They place the reaction site at different positions in the resulting structure.

Can total bromine prove positional identity?

No; the ring substitution must be established structurally.

Does a materials application define electronic grade?

Define the actual trace-impurity criteria required by the project.

Technical sources
  1. PubChem CID 16329NCBI / PubChem
  2. 2-Bromobiphenyl B0559TCI
  3. Building Blocks for Organic SemiconductorTCI

Continue your research

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