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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

2-Bromopyrimidine | CAS 4595-60-2

A compact C2 pyrimidine electrophile for heteroaryl bond construction, appearing in published carbon–sulfur coupling and indole N-arylation studies. Positional identity and handling history guide reagent qualification.

CAS4595-60-2
Molecular formulaC4H3BrN2

Product overview

The brominated carbon lies between the two nitrogens of the pyrimidine ring. That placement gives 2-bromopyrimidine a defined attachment position when the C–Br bond is replaced during coupling. It differs from 4- and 5-bromopyrimidines in the connection established to the next molecular fragment. Published research uses this reagent in both sulfur-bond formation and nitrogen heteroarylation. For qualification, a GC result should be accompanied by structural identification and an assessment of relevant halopyrimidines. Handling also deserves attention: external reference information identifies sensitivity to air and heat, making the selected supplier’s storage instructions and the condition of a retained sample useful review points.

Chemical identity

Chemical name
2-Bromopyrimidine
CAS number
4595-60-2
Molecular formula
C4H3BrN2

Application context

Nickel and visible-light-mediated research has included 2-bromopyrimidine among substrates for carbon–sulfur cross-coupling. In medicinal-chemistry work, copper-mediated N-arylation has connected this pyrimidine fragment to indole derivatives. These uses exploit the C2 bromide as a point for introducing a new bond while retaining the diazine ring.

The intended catalyst and coupling partner should guide sample qualification. Agree the chromatographic method, the halopyrimidines to be resolved and any solvent or water requirements associated with that reaction. When evaluating stored samples, compare their analytical profile with the original batch results before drawing conclusions about reaction performance.

Chemistry and synthetic role

C2 is bonded to both ring nitrogens and carries bromine. Replacement of that bromine introduces the coupling partner at a fixed position on the pyrimidine.

Quality review

Confirm C2 attachment

Use structural data that distinguish the 2-bromo compound from 4- and 5-bromopyrimidines.

Resolve relevant halopyrimidines

Agree a GC or other suitable separation and identify which related components require limits.

Review sample handling

Match the batch and retained sample to the supplier’s air- and heat-sensitivity instructions.

Preparing a specification

Specify 2-bromopyrimidine, a positional identity test, chromatographic assay and relevant halopyrimidine limits. State the coupling application and any moisture or residual-solvent criteria.

Packaging and storage

Reference handling information: TCI lists air and heat sensitivity with refrigerated storage. Confirm the actual selected grade’s SDS, temperature range, closure and transport arrangements before ordering.

Documentation

Request a batch COA, specification, identity data and SDS. Confirm the availability of the analytical methods and any application-specific impurity results with the proposed supplier.

Procurement questions

Why does the bromine position matter?

It determines where the new bond joins the pyrimidine; other bromopyrimidines give a different connection.

Has this reagent been used for sulfur coupling?

Yes, it appears in published nickel/visible-light carbon–sulfur coupling research.

How should a stored sample be compared?

Review storage history and repeat the agreed analytical checks against the original batch profile.

Technical sources
  1. 2-Bromopyrimidine B2832TCI
  2. Synthesis method of 2-bromopyrimidineCN113563270B
  3. C(sp2)–S cross-coupling reactions with nickel, visible light, and mesoporous graphitic carbon nitrideGreen Chemistry / RSC
  4. Research article D5MD00406CRSC Medicinal Chemistry