Silanes
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Resin based restorative dental materials: characteristics and future perspectives Open
This review article compiles the characteristics of resin based dental composites and an effort is made to point out their future perspectives. Recent research studies along with few earlier articles were studied to compile the synthesis s…
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Visible Light‐Induced Room‐Temperature Heck Reaction of Functionalized Alkyl Halides with Vinyl Arenes/Heteroarenes Open
The first visible light‐induced Pd‐catalyzed Heck reaction of α‐heteroatom substituted alkyl iodides and ‐bromides with vinyl arenes/heteroarenes has been developed. This transformation efficiently proceeds at room temperature and enables …
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Synthesis of Enantioenriched Allylic Silanes via Nickel-Catalyzed Reductive Cross-Coupling Open
An asymmetric Ni-catalyzed reductive cross-coupling has been developed to prepare enantioenriched allylic silanes. This enantioselective reductive alkenylation proceeds under mild conditions and exhibits good functional group tolerance. Th…
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Asymmetric Copper Hydride-Catalyzed Markovnikov Hydrosilylation of Vinylarenes and Vinyl Heterocycles Open
We report a highly enantioselective CuH-catalyzed Markovnikov hydrosilylation of vinylarenes and vinyl heterocycles. This method has a broad scope and enables both the synthesis of isolable silanes and the conversion of crude products to c…
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Fifty Years of Hydrosilylation in Polymer Science: A Review of Current Trends of Low-Cost Transition-Metal and Metal-Free Catalysts, Non-Thermally Triggered Hydrosilylation Reactions, and Industrial Applications Open
Hydrosilylation reactions, the (commonly) anti-Markovnikov additions of silanes to unsaturated bonds present in compounds such as alkenes and alkynes, offer numerous unique and advantageous properties for the preparation of polymeric mater…
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The Emergence of Manganese-Based Carbonyl Hydrosilylation Catalysts Open
In recent years, interest in homogeneous manganese catalyst development has intensified because of the earth-abundant and nontoxic nature of this metal. Although compounds of Mn have largely been utilized for epoxidation reactions, recent …
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An Easily Accessed Nickel Nanoparticle Catalyst for Alkene Hydrosilylation with Tertiary Silanes Open
The first efficient and non‐precious nanoparticle catalyst for alkene hydrosilylation with commercially relevant tertiary silanes has been developed. The nickel nanoparticle catalyst was prepared in situ from a simple nickel alkoxide preca…
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Functionalization of Fe3O4 NPs by Silanization: Use of Amine (APTES) and Thiol (MPTMS) Silanes and Their Physical Characterization Open
In this paper the results concerning the synthesis of magnetite (Fe3O4) nanoparticles (NPs), their functionalization using silane derivatives, such as (3-Aminopropyl)triethoxysilane (APTES) and (3-mercaptopropyl)trimethoxysilane (MPTMS), a…
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Enantioselective Si–H Insertion Reactions of Diarylcarbenes for the Synthesis of Silicon-Stereogenic Silanes Open
We report the first example of enantioselective, intermolecular diarylcarbene insertion into Si-H bonds for the synthesis of silicon-stereogenic silanes. Dirhodium(II) carboxylates catalyze an Si-H insertion using carbenes derived from dia…
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Palladium(0)‐Catalyzed Directed <i>syn</i> ‐1,2‐Carboboration and ‐Silylation: Alkene Scope, Applications in Dearomatization, and Stereocontrol by a Chiral Auxiliary Open
We report the development of palladium(0)‐catalyzed syn ‐selective 1,2‐carboboration and ‐silylation reactions of alkenes containing cleavable directing groups. With B 2 pin 2 or PhMe 2 Si‐Bpin as nucleophiles and aryl/alkenyl triflates as…
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Silane- and peroxide-free hydrogen atom transfer hydrogenation using ascorbic acid and cobalt-photoredox dual catalysis Open
Hydrogen atom transfer (HAT) hydrogenation has recently emerged as an indispensable method for the chemoselective reduction of unactivated alkenes. However, the hitherto reported systems basically require stoichiometric amounts of silanes …
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Hydrosilylation and hydroboration in a sustainable manner: from Earth-abundant catalysts to catalyst-free solutions Open
Hydroelementation enables a facile reduction or functionalization of several unsaturated systems, and thus activation of such bonds like B–H and Si–H is a powerful synthetic tool.
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Oxidative 1,2-Difunctionalization of Ethylene via Gold-Catalyzed Oxyarylation Open
Under the conditions of oxidative gold catalysis, exposure of ethylene to aryl silanes and alcohols generates products of 1,2-oxyarylation. This provides a rare example of a process that allows catalytic differential 1,2-difunctionalizatio…
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Palladium-Catalyzed Cross-Coupling of Silyl Electrophiles with Alkylzinc Halides: A Silyl-Negishi Reaction Open
We report the first example of a silyl-Negishi reaction between secondary zinc organometallics and silicon electrophiles. This palladium-catalyzed process provides direct access to alkyl silanes. The delicate balance of steric and electron…
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Control of Selectivity through Synergy between Catalysts, Silanes, and Reaction Conditions in Cobalt-Catalyzed Hydrosilylation of Dienes and Terminal Alkenes Open
Readily accessible ( i-PrPDI)CoCl2 [ i-Pr PDI = 2,6-bis(2,6-diisopropylphenyliminoethyl)pyridine] reacts with 2 equivalents of NaEt3BH at -78 °C in toluene to generate a catalyst that effects highly selective anti-Markovnikov hydrosilylati…
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N- and O- ligand doped mesoporous silica-chitosan hybrid beads for the efficient, sustainable and selective recovery of rare earth elements (REE) from acid mine drainage (AMD): Understanding the significance of physical modification and conditioning of the polymer Open
Silica-chitosan hybrid beads were synthesized via three different methods to investigate the selective recovery of REE from AMD. The influence of amino/non-amino silanes, high molecular weight/high viscous chitosan and N-/O- based ligands …
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Surface-Functionalized Silicon Nanoparticles as Anode Material for Lithium-Ion Battery Open
An epoxy group was successfully attached to the surface of silicon nanoparticle (SiNPs) via a silanization reaction between silanol-enriched SiNPs and functional silanes. The epoxy-functionalized SiNPs showed a much improved cell performan…
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Ligand chemistry for surface functionalization in <span>MXenes</span>: A review Open
Surface chemistry of MXenes is of significant interest due to its potential to control their final optoelectronic and physicochemical properties, and address the oxidation and dispersion stabilities of MXenes. Surface chemistry of MXenes c…
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Selective adsorption and determination of hexavalent chromium ions using graphene oxide modified with amino silanes Open
Novel adsorbents are described for the preconcentration of chromium(VI). Graphene oxide (GO) was modified with various amino silanes containing one, two, or three nitrogen atoms in the molecule. These include 3-aminopropyltriethoxysilane (…
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Palladium-Catalyzed Cross-Coupling of Monochlorosilanes and Grignard Reagents Open
Using a palladium catalyst supported by DrewPhos, the alkylation of monochlorosilanes with primary and secondary alkyl-magnesium halides is now possible. Arylation with sterically demanding aromatic magnesium halides is also enabled. This …
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Metal-catalyzed silylation of sp<sup>3</sup>C–H bonds Open
Metal-catalyzed activations of inert sp3C–H bonds have recently brought a revolution in the synthesis of useful molecules and molecular materials, due to the interest of the formed sp3C–SiR3 silanes, stable organometallic species, and for …
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Facile Surface Modification of Hydroxylated Silicon Nanostructures Using Heterocyclic Silanes Open
Heterocyclic silanes containing Si-N or Si-S bonds in the ring undergo a ring opening reaction with -OH groups at the surface of porous Si nanostructures to generate -SH or -NH functional surfaces, grafted via O-Si bonds. The reaction is s…
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Photochemical C–H Silylation and Hydroxymethylation of Pyridines and Related Structures: Synthetic Scope and Mechanisms Open
Considering the synthetic relevance of heteroarenes in various areas ranging from organic synthesis to medicinal chemistry, developing practically simple approaches to access functionalized heteroarenes is of significant value. Described h…
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Bis(catecholato)silanes: assessing, rationalizing and increasing silicon's Lewis superacidity Open
The Lewis acidity of bis(catecholato)silanes is scaled and rationalized. Perbromination of the catechols provides the strongest silicon Lewis superacid.
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Highly chemoselective ruthenium(<span>ii</span>)-catalyzed direct arylation of cyclic and N,N-dialkyl benzamides with aryl silanes Open
The ruthenium(ii)-catalyzed oxidative cross-coupling of C(sp2)–H bonds with organosilanes has been accomplished for the first time.
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Visible-light-mediated deuteration of silanes with deuterium oxide Open
An unprecedented visible-light-mediated metal-free deuteration of hydrosilanes using D2O as a deuterium source was developed.
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Functionalization and Surface Modifications of Bioactive Glasses (BGs): Tailoring of the Biological Response Working on the Outermost Surface Layer Open
Bioactive glasses (BGs) are routinely being used as potent materials for hard and soft tissue engineering applications; however, improving their biological activities through surface functionalization and modification has been underestimat…
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Geometric <i>E</i>→<i>Z</i> Isomerisation of Alkenyl Silanes by Selective Energy Transfer Catalysis: Stereodivergent Synthesis of Triarylethylenes via a Formal <i>anti</i>‐Metallometallation Open
An efficient geometrical E → Z isomerisation of alkenyl silanes is disclosed via selective energy transfer using an inexpensive organic sensitiser. Characterised by operational simplicity, short reaction times (2 h), and broad substrate to…
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Significant Performance Enhancement of Polymer Resins by Bioinspired Dynamic Bonding Open
Marine mussels use catechol‐rich interfacial mussel foot proteins (mfps) as primers that attach to mineral surfaces via hydrogen, metal coordination, electrostatic, ionic, or hydrophobic bonds, creating a secondary surface that promotes bo…
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Recovery of Shallow Charge-Trapping Defects in CsPbX<sub>3</sub> Nanocrystals through Specific Binding and Encapsulation with Amino-Functionalized Silanes Open
[EN] We report a facile methodology to restore photoluminescence (PL) of CsPbBr3 nanocrystals (NCs) based on their postsynthetic modification with 3-aminopropyltriethoxysilane (APTES). By this methodology, a stark PL recovery factor of nea…