2-Bromo-4-hydroxymethylthiazole: Properties, Handling & Lab Use

2-Bromo-4-hydroxymethylthiazole is a versatile brominated heterocyclic building block widely used in medicinal chemistry and synthetic organic chemistry for the preparation of functionalised thiazole derivatives.

Chemical Name

2-Bromo-4-(hydroxymethyl)thiazole

Core Scaffold

1,3-Thiazole ring with bromo substituent at C-2 and hydroxymethyl group at C-4

Primary Application

Heterocyclic building block for cross-coupling, nucleophilic substitution, and further functionalisation reactions

Key Reactive Sites

C-2 C–Br bond (electrophilic, suited for metal-catalysed coupling); C-4 –CH2OH group (nucleophilic handle for esterification, oxidation, or etherification)

Storage Recommendation

Store in a cool, dry, well-ventilated location away from incompatible materials; keep container tightly closed

Aladdin SKU

B170760

Chemical Identity and Physical Properties

2-Bromo-4-hydroxymethylthiazole, also named 2-bromo-4-(hydroxymethyl)-1,3-thiazole, is a five-membered aromatic heterocyclic compound containing both sulfur and nitrogen in the ring. The molecule bears two distinct functional groups: a carbon–bromine bond at the electron-deficient C-2 position and a primary alcohol (–CH₂OH) appended at C-4. This dual functionality makes the compound a bifunctional synthon capable of undergoing independent transformations at each site.

The thiazole ring system is planar and aromatic, conferring moderate stability under ambient conditions. The C-2 bromo substituent renders that position electrophilically activated toward oxidative addition by transition metals, while the hydroxymethyl group at C-4 provides a nucleophilic handle amenable to standard alcohol chemistry. Molecular weight and other physicochemical constants should be confirmed against the current certificate of analysis supplied with each lot (Aladdin SKU B170760).

Synthetic Applications and Reactivity

The C-2 aryl/heteroaryl bromide is highly amenable to palladium- and nickel-catalysed cross-coupling reactions, including Suzuki–Miyaura, Negishi, Sonogashira, and Buchwald–Hartwig protocols. These transformations enable rapid elaboration of the thiazole core with aryl, vinyl, alkynyl, or amino substituents, providing access to structurally diverse thiazole libraries relevant to drug discovery programs.

The hydroxymethyl group at C-4 participates in a complementary set of reactions. It can be oxidised to the corresponding aldehyde or carboxylic acid, esterified to install activated leaving groups or prodrug motifs, converted to a halide for S_N2 reactions, or protected as a silyl or benzyl ether. Sequential or orthogonal use of both reactive sites allows the construction of complex polyfunctional molecules from this single starting material.

In medicinal chemistry, 2-bromo-4-hydroxymethylthiazole serves as an attractive scaffold because the thiazole ring is bioisosteric with oxazole and imidazole rings, and the bromine at C-2 can be replaced with pharmacophoric groups identified through structure–activity relationship (SAR) studies. This compound is therefore a valuable entry point in the synthesis of bioactive thiazole-containing natural product analogues and pharmaceutical candidates.

Safe Handling and Storage Guidelines

As with all organobromide reagents, 2-bromo-4-hydroxymethylthiazole should be handled following standard laboratory safety practices. Work in a well-ventilated fume hood, wear appropriate personal protective equipment including chemical-resistant gloves, safety glasses, and a laboratory coat. Avoid inhalation of dust or vapours and prevent contact with skin and eyes.

Store the material in a tightly sealed container in a cool, dry location away from oxidising agents, strong bases, and reducing agents. Temperature-controlled storage (typically 2–8 °C or as specified on the product label) is advisable to maximise shelf life and maintain reagent integrity. Always consult the Safety Data Sheet (SDS) provided with the product for detailed hazard information, first-aid measures, and disposal procedures before use.

Dispose of waste in accordance with local regulations governing halogenated organic waste. Do not pour down drains or discharge into the environment without proper treatment.

Quality, Purity and Ordering Information

Aladdin Scientific supplies 2-Bromo-4-hydroxymethylthiazole under SKU B170760. Each lot is accompanied by a certificate of analysis (CoA) specifying purity determined by standard analytical methods such as HPLC or GC, and identity confirmed by NMR or MS. Researchers should verify that the purity grade is appropriate for their intended application; higher purity material is advisable for sensitive catalytic or biological assays.

For large-scale procurement or custom packaging inquiries, contact Aladdin Scientific's technical sales team. Bulk pricing, multi-gram quantities, and custom specifications may be accommodated upon request. When placing orders, reference SKU B170760 to ensure the correct product is supplied.

Frequently asked questions

What cross-coupling reactions are compatible with 2-Bromo-4-hydroxymethylthiazole?

The C-2 C–Br bond is well-suited for palladium-catalysed Suzuki–Miyaura (with boronic acids), Negishi (with organozinc reagents), Sonogashira (with terminal alkynes), and Buchwald–Hartwig amination reactions. Standard Pd(0) or Pd(II) precatalysts with phosphine ligands are typically effective. Reaction conditions should be optimised for the specific coupling partner and scale.

How should the hydroxymethyl group at C-4 be selectively transformed without affecting the C-2 bromo substituent?

The –CH2OH group can be selectively oxidised using mild oxidants (e.g., MnO2 for oxidation to the aldehyde, or TEMPO/bleach systems), esterified under standard acylation conditions, or converted to a leaving group (e.g., mesylate or tosylate) at temperatures low enough to avoid competing Pd-catalysed side reactions. Protecting group strategies may be employed when sequential transformations at both sites are planned. Confirm orthogonality of conditions by small-scale screening before committing to larger batches.

What are the recommended storage conditions to maintain the stability of B170760?

Store 2-Bromo-4-hydroxymethylthiazole (SKU B170760) in a tightly sealed container under cool, dry conditions, away from light, moisture, oxidising agents, and strong bases. Refrigerated storage (2–8 °C) is generally advisable. Always refer to the product label and SDS for lot-specific guidance, and check the CoA for any updated stability information.

Is 2-Bromo-4-hydroxymethylthiazole suitable for biological screening applications?

As a synthetic intermediate rather than a finished bioactive compound, 2-Bromo-4-hydroxymethylthiazole is primarily used to generate functionalised thiazole derivatives that may then be evaluated in biological assays. Its inherent reactivity (C–Br electrophilicity) means direct biological screening should be approached cautiously. Researchers are advised to derivatise the compound into stable, well-characterised analogues before conducting cell-based or biochemical assays.

References

1. Joule, J. A.; Mills, K. Heterocyclic Chemistry, 5th ed.; Wiley-Blackwell: Oxford, 2010. (General reference for thiazole chemistry and reactivity.)
2. Miyaura, N.; Suzuki, A. Palladium-Catalyzed Cross-Coupling Reactions of Organoboron Compounds. Chem. Rev. 1995, 95, 2457–2483. doi:10.1021/cr00039a007
3. Aladdin Scientific Certificate of Analysis for 2-Bromo-4-hydroxymethylthiazole, SKU B170760 (consult current lot CoA for purity and analytical data).

Products are supplied for research and development use only. Not for use in humans, animals, diagnosis, or therapy.