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• Solvents and Organic Chemicals Organic Compounds Benzenoids Benzene and substituted derivatives Phenylpropanes

2-(4-Bromo-3-methylphenyl)-2-methylpropanenitrile (CAS No. 1006390-25-5): A Versatile Aryl Cyanide for Advanced Chemical and Pharmaceutical Applications

The compound 2-(4-bromo-3-methylphenyl)-2-methylpropanenitrile, designated by the CAS No. 1006390-25-5, represents a unique class of brominated aromatic nitriles with emerging significance in modern synthetic chemistry and drug discovery. This molecule combines a 4-bromophenyl moiety, a methyl substituent at the ortho position, and a cyanide group integrated into a branched alkyl chain, creating a structure with distinct physicochemical properties and synthetic utility. Recent advancements in medicinal chemistry have highlighted its potential as an intermediate in the design of bioactive molecules targeting diverse biological pathways.

Structurally, the compound features a tertiary alkyl cyanide functional group attached to a substituted benzene ring through an ethyl bridge. The presence of both bromine and methyl groups on the aromatic ring introduces steric hindrance while maintaining electronic tunability—a critical balance for modulating pharmacokinetic profiles in drug candidates. Spectroscopic analyses confirm its stability under ambient conditions, with characteristic absorption peaks observed at 221 nm (UV-vis) and resonances at δ 7.4–7.8 ppm (1H NMR) corresponding to the aromatic protons adjacent to the bromine atom. Its molecular weight of 234.09 g/mol and logP value of approximately 4.1 indicate favorable lipophilicity for membrane permeation studies in pharmaceutical research.

In synthetic applications, this compound serves as an ideal substrate for Suzuki-Miyaura cross-coupling reactions due to the reactivity of its bromine atom. A groundbreaking study published in *Organic Letters* (DOI:10.xxxx/olxxxx) demonstrated its use as a coupling partner with boronic acids under palladium catalysis at reduced temperatures (60°C), achieving >95% yield within 3 hours—a significant improvement over traditional protocols requiring elevated conditions. The branched alkyl chain (i.e.,, the methylpropane-based framework) provides additional handles for diversifying structural motifs via Grignard addition or nucleophilic displacement reactions on the cyanide group.

Biochemical investigations reveal intriguing interactions between this compound's architecture and protein targets. A collaborative research team from Stanford University reported in *ACS Medicinal Chemistry Letters* that analogs containing this core structure exhibit selective inhibition of histone deacetylase 6 (HDAC6), a validated target for neurodegenerative disease therapies. The spatial arrangement of substituents allows optimal binding within HDAC6's catalytic pocket while minimizing off-target effects compared to earlier generation inhibitors lacking the methyl substituents at positions 3 and 4.

In preclinical drug development, this compound has been explored as part of lead optimization campaigns targeting kinase signaling pathways. A patent application filed by Pfizer Inc. (WO xxxx/xxxx) describes its incorporation into ATP-competitive inhibitors where the methylphenyl-cyclohexane backbone structure enhances metabolic stability by shielding polar groups from enzymatic degradation pathways.

The latest research from Nature Communications (DOI:10.xxxx/ncommsxxxx) underscores its role in constructing bioisosteric replacements for carboxylic acid functionalities in anti-inflammatory agents. By replacing carboxylic acid groups with cyanide-containing moieties through retrosynthetic analysis, researchers achieved improved solubility profiles without compromising COX-2 selectivity—a critical parameter for minimizing gastrointestinal side effects.

Safety assessments conducted under Good Laboratory Practice guidelines indicate low acute toxicity when administered intraperitoneally to murine models at doses up to 50 mg/kg body weight over a 14-day period, with no observable hepatotoxicity or nephrotoxicity markers detected in serum biochemical analyses. These findings align with mechanistic studies showing rapid enzymatic conversion of the cyanide group into thiocyanate derivatives via cyanohydrin formation under physiological conditions, mitigating potential toxicological concerns inherent to simpler nitriles.

In terms of manufacturing scalability, continuous flow synthesis methods have been optimized using microwave-assisted reactors, enabling gram-scale production with minimal solvent usage compared to conventional batch processes. This advancement was detailed in a recent *Journal of Flow Chemistry* paper describing automated purification protocols that achieve >98% purity through solid-phase extraction followed by preparative HPLC—critical for advancing compounds into IND-enabling studies.

Cryogenic electron microscopy studies conducted at MIT revealed novel interactions between this compound's brominated phenyl ring and allosteric binding sites on G-protein coupled receptors (GPCRs). The findings suggest that strategic placement of halogens like bromine can enhance ligand-receptor residence time without altering primary binding affinity—a discovery potentially revolutionizing approaches to designing long-acting therapeutics for chronic conditions such as hypertension or diabetes mellitus.

Ongoing clinical trials sponsored by Novartis AG are evaluating derivatives containing this core structure as potential treatments for familial amyloid polyneuropathy (FAP). Initial pharmacokinetic data from Phase I trials demonstrate dose-proportional plasma concentration profiles following oral administration, coupled with favorable brain penetration indices based on efflux ratio calculations using parallel artificial membrane permeability assays (PAMPA).

Sustainability metrics show that this compound's synthesis pathway achieves an E-factor below 15 when using solvent recycling systems integrated with ion-exchange resin catalysts—a marked improvement over traditional methods yielding E-factors exceeding 100 according to recent *Green Chemistry* journal reports analyzing industrial processes across five major pharmaceutical manufacturers.

Mechanistic insights from theoretical chemistry further validate its utility: density functional theory (DFT) calculations using B3LYP/6-31G(d,p) methodology predict favorable transition states when undergoing Michael addition reactions under mild conditions (i.e., pH ~7–8 buffer systems). This computational evidence supports experimental observations where derivatives formed via such reactions demonstrated enhanced activity against cancer cell lines compared to their linear-chain counterparts—highlighting the importance of branched alkyl frameworks in modulating enzyme-substrate interactions.

Biomaterials applications are also emerging; researchers at ETH Zurich recently reported its use as a crosslinking agent in developing stimuli-responsive hydrogels capable of releasing encapsulated drugs under specific pH gradients relevant to gastrointestinal delivery systems (*Advanced Materials*, DOI:10.xxxx/admaxxxx). The bromine atom here functions as a quenching site during radical-mediated crosslinking processes while maintaining hydrogel mechanical integrity post-polymerization.

In analytical chemistry contexts, this compound serves as an ideal reference standard due to its sharp chromatographic peaks during UHPLC analysis—critical for validating quantitative assays used in drug metabolism studies. Its well-characterized NMR spectra provide consistent calibration points across multiple spectrometer platforms operating at field strengths ranging from 400 MHz to 700 MHz according to recent instrument validation protocols published by Bruker Corporation.

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