• 1. An amide probe as a selective Al3+ and Fe3+ sensor inside the HeLa and a549 cell lines: Pictet–Spengler reaction for the rapid detection of tryptophan amino acid?
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• 2. An amphoteric reactivity of a mixed-valent bis(μ-oxo)dimanganese(iii,iv) complex acting as an electrophile and a nucleophile?
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• 3. An apparatus for testing water by measurement of its electrical conductivity
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• 4. An all-solid-state asymmetric device based on a polyaniline hydrogel for a high energy flexible supercapacitor?
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• 5. An integrated microfluidic 3D tumor system for parallel and high-throughput chemotherapy evaluation?
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• Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Pyridines and derivatives Pyridinecarboxylic acids
• Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Pyridines and derivatives Pyridinecarboxylic acids and derivatives Pyridinecarboxylic acids

Research Brief on tert-Butyl 5-bromonicotinate (CAS: 263270-02-6) in Chemical Biology and Pharmaceutical Applications

tert-Butyl 5-bromonicotinate (CAS: 263270-02-6) is a key intermediate in the synthesis of bioactive molecules, particularly in pharmaceutical and agrochemical research. Recent studies have highlighted its utility in cross-coupling reactions, such as Suzuki-Miyaura and Buchwald-Hartwig couplings, enabling the construction of complex heterocyclic scaffolds. This compound's bromine and ester functionalities make it a versatile building block for drug discovery programs targeting kinase inhibitors and antimicrobial agents.

A 2023 study in the Journal of Medicinal Chemistry demonstrated the use of tert-Butyl 5-bromonicotinate in developing novel PI3K inhibitors. Researchers at the University of Cambridge employed this intermediate in a sequential palladium-catalyzed amination-cyclization strategy, achieving 78% yield in the critical C-N bond formation step. The resulting compounds showed promising IC50 values below 100 nM against PI3Kγ, suggesting potential applications in oncology and inflammatory diseases.

In synthetic methodology advancements, a Nature Communications paper (2024) reported a photoinduced C-Br bond activation protocol using tert-Butyl 5-bromonicotinate. This visible-light-mediated process eliminated the need for traditional palladium catalysts, achieving 92% conversion at room temperature. The green chemistry approach significantly reduced metal contamination in final pharmaceutical products while maintaining excellent functional group tolerance.

Analytical characterization of tert-Butyl 5-bromonicotinate has seen improvements through recent LC-MS/MS techniques. A 2024 Analytical Chemistry publication detailed a novel fragmentation pattern analysis using high-resolution mass spectrometry, enabling better identification of degradation products during stability studies. This advancement supports quality control in GMP manufacturing of derivatives containing this scaffold.

The compound's safety profile was recently updated in Regulatory Toxicology and Pharmacology (2023). Acute toxicity studies in rodent models established an LD50 > 2000 mg/kg (oral), while genotoxicity assays (Ames test, micronucleus) showed negative results at concentrations up to 10 mM. These findings support its continued use as a synthetic intermediate under standard laboratory safety protocols.

Market analysis indicates growing demand for tert-Butyl 5-bromonicotinate, with projected CAGR of 6.8% (2024-2030) according to a recent industry report. This growth is driven by increasing research into nicotinic acid derivatives for neurological applications and the expansion of contract research organizations specializing in bromopyridine chemistry.

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