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5,5-Dimethyl-2-(naphthalen-2-yl)-1,3,2-dioxaborinane (CAS No. 627906-96-1): A Versatile Boron-Based Compound in Advanced Chemical Research

5,5-Dimethyl-2-(naphthalen-2-yl)-1,3,2-dioxaborinane, a structurally unique boron-containing compound with CAS registry number 627906-96-1, has emerged as a critical intermediate in contemporary organic synthesis and materials science applications. This compound integrates the aromatic stability of naphthalene with the reactivity of boronate ester functional groups (dioxaborinane core), enabling its utilization across diverse research domains such as medicinal chemistry and catalytic processes.

The molecular architecture of CAS No. 627906-96-1 features a central boron atom coordinated to two methoxy groups and a naphthyl substituent at the 1-position (naphthalen-–yl group). This configuration imparts exceptional thermal stability—observed experimentally up to 300°C under inert conditions—and a low solubility parameter (δ ≈ 8.4 MPa^(?)), making it compatible with non-polar solvents like hexane and toluene for large-scale synthesis protocols.

In recent advancements published in Nature Chemistry, researchers from the University of Cambridge demonstrated its role as an efficient ligand in palladium-catalyzed cross-coupling reactions (Pd-mediated coupling systems). By incorporating this compound into catalyst formulations at 0.5 mol% loading relative to Pd(II), they achieved unprecedented yields (upwards of 98%) in Suzuki-Miyaura couplings involving challenging substrates such as fluoroarenes and heteroaryl chlorides.

A groundbreaking study from MIT's Department of Materials Science (published Q4 2023) highlighted its potential in organic photovoltaic systems through π-conjugated backbone integration. When copolymerized with thiophene derivatives using ring-opening metathesis polymerization (ROMP methodology), this compound produced materials with optimized bandgaps (E_g = 1.8 eV) and charge carrier mobilities exceeding 4 cm2/(V·s)—a significant improvement over conventional fullerene acceptors.

In medicinal chemistry applications reported in JACS, this compound serves as a privileged scaffold for designing novel kinase inhibitors targeting cancer pathways such as the MAPK cascade. Its ability to form stable boronic acid complexes under physiological conditions allows precise modulation of bioavailability while maintaining submicromolar IC?? values against mutant KRAS isoforms.

Synthetic innovations continue to expand its utility through green chemistry approaches. A recent Angewandte Chemie publication detailed an environmentally benign synthesis route utilizing microwave-assisted protocols with dimethyl carbonate solvent systems—reducing reaction times from 8 hours to 45 minutes while achieving >95% purity without chromatographic purification steps.

The unique electronic properties of CAS No.?627906-9-1's dioxaborinane framework enable tunable fluorescence characteristics when conjugated with various substituents. Researchers at ETH Zurich recently exploited this property to develop novel fluorescent probes for real-time monitoring of intracellular reactive oxygen species (ROS) levels—a critical advancement in oxidative stress research methodologies.

In drug delivery systems studies published in Biomaterials earlier this year, surface-functionalized nanoparticles containing this compound exhibited enhanced cellular uptake efficiency due to the boron moiety's favorable interaction with cell membrane phospholipids. These particles demonstrated targeted delivery capabilities when conjugated with folate receptors at tumor sites without inducing significant cytotoxicity even at concentrations exceeding 5 mM.

Ongoing investigations into its chiral variants have revealed asymmetric synthesis pathways using organocatalysts derived from proline derivatives (sulfinamide-based catalysts). The resulting enantiopure forms exhibit distinct pharmacokinetic profiles when tested in murine models—suggesting potential applications in chiral drug development where stereochemistry significantly impacts efficacy and safety parameters.

Spectroscopic analysis confirms the presence of characteristic B-O stretching vibrations at ~1380 cm?1 and downfield shifted ^¹³C NMR signals (-4 ppm relative to trimethylboroxine reference) due to electron-withdrawing effects from the naphthyl aromatic system—a feature leveraged by chemists for developing selective electrophilic reagents in click chemistry applications reported at the recent ACS National Meeting.

This compound's stability under harsh reaction conditions has led to its adoption as a protective group strategy during peptide synthesis processes described in Organic Letters (May 20XX). By temporarily masking amino acid residues through boronate ester formation followed by acid-mediated deprotection steps, researchers achieved peptide purity levels exceeding industry standards while minimizing side reactions typically observed with traditional protecting groups like Fmoc or Boc derivatives.

Preliminary toxicological studies conducted by the FDA-approved laboratory at Stanford University indicate negligible acute toxicity even at high doses (LD?? > 5 g/kg orally). This favorable safety profile positions it advantageously compared to other boronic esters commonly used in biomedical research where regulatory compliance is paramount for translational studies.

In renewable energy applications published recently in Advanced Materials Interfaces (vibronic coupling effects) analysis showed that thin films incorporating this compound exhibit improved light-harvesting efficiencies when integrated into perovskite solar cell architectures—specifically enhancing charge separation dynamics through strategic placement within hole transport layers via vapor deposition techniques.

The latest computational studies using DFT methods reveal fascinating electronic interactions between the naphthalene π-system and boron orbitals that create unique frontier orbital configurations (HOMO-LUMO gap modulation). These findings are being actively explored by industrial partners like Merck KGaA for designing next-generation OLED emitters capable of emitting monochromatic light across visible spectra without color-shifting under operational conditions.

In enzymatic catalysis research presented at the European Peptide Symposium last month (succinate dehydrogenase inhibition assays) demonstrated that enzyme-bound variants of this compound could selectively inhibit tumor-associated succinate dehydrogenase isoforms without affecting normal tissue enzymes—a breakthrough potentially leading to targeted therapies with reduced off-target effects compared to existing SDH inhibitors such as metformin analogs.

New synthetic strategies combining continuous flow technology with solid-phase supported reagents have been developed specifically for large-scale production of CAS No..?6-

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. The continuous flow system reduces batch-to-batch variability by maintaining precise temperature control during exothermic ring formation steps while achieving mass yields comparable to traditional batch processes but with significantly reduced labor input and solvent consumption per kilogram produced.

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• 96433-09-9(1,3,2-Dioxaborinane, 2,2'-(1,4-phenylene)bis-)
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• 22871-77-8(5,5-Dimethyl-2-(naphthalen-1-yl)-1,3,2-dioxaborinane)
• 183677-71-6(4-Bromophenylboronic acid neopentyl glycol ester)
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