Mechanochemistry III
Mechanochemistry III aims at providing the readership with an excellent collection of contributions in the field of mechanochemistry, including mechanosynthesis of organic molecules, catalysis under mechanochemical conditions, mechanistic studies of mechanochemical transformations, polymer mechanochemistry, and much more.
- Editorial
- Published 12 Oct 2022
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Scheme 1: a) Mechanochemical PEG-400-assisted halogenation of phenols and anilines using NXS. b) Halogenation...
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Scheme 2: Mechanochemical palladium-catalyzed borylation protocol of aryl halides.
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Scheme 3: 1,2-Debromination of polycyclic imides, followed by in situ trapping of the dienophile by several d...
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Scheme 4: Synthesis of g-h-PCN from sodium phosphide and trichloroheptazine mediated by mechanochemistry.
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Scheme 5: Mechanochemical intra- and intermolecular C–N coupling reactions using DDQ as an oxidant.
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- Full Research Paper
- Published 07 Feb 2022
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Scheme 1: Examples of mechanochemical reactions using NFSI.
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Scheme 2: Mechanochemical fluorination of arenes 1 with NFSI. (a) Product distributions and reaction conditio...
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Figure 1: Time-resolved 2D plots of the mechanochemical reaction of: (a) 1c (0.59 mmol), NFSI (1.0 equiv), an...
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Scheme 3: (a–f) Reactions of substrates 3 with NFSI. Reaction conditions: Substrates 3 (0.734 mmol) were mill...
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Scheme 4: Regioselective C-3 mechanochemical amidation of 5 with NFSI.
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- Full Research Paper
- Published 01 Jun 2022
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Figure 1: Our work on mechanochemical C–N coupling reactions using DDQ. The newly formed C–N bonds are shown ...
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Figure 2: Scope of the mechanochemical synthesis of substituted benzimidazoles.
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Figure 3: Synthesis of quinazolin-4(3H)-one derivatives.
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Figure 4: The substrate scope for the synthesis of quinazolin-4(3H)-one derivatives.
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Figure 5: a) Control experiment and b) Plausible mechanism.
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Figure 6: Large-scale synthesis. a) 1,2-Disubstituted benzimidazoles. b) Substituted quinazolin-4(3H)-ones. R...
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- Full Research Paper
- Published 15 Jun 2022
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Figure 1: Molecular structures of the monomeric cyclopalladated intermediate and brominated product observed ...
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Scheme 1: Halogenation of azobenzenes with strong electron-donating substituents.
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Figure 2: a) Two-dimensional (2D) plot of the time-resolved Raman monitoring of NG of L2 (0.50 mmol) with NBS...
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Figure 3: Experimental X-ray molecular structure of succinimide product L4-III.
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Scheme 2: PdII-catalyzed halogenation of azobenzene and its para-halogenated derivatives.
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Figure 4: Experimental X-ray molecular structure of the intermediate I6-I.
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Figure 5: a) In situ observation of I6-I during the time-resolved Raman monitoring of LAG of L6 (0.50 mmol) w...
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- Full Research Paper
- Published 22 Jun 2022
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Scheme 1: Historic synthetic approaches.
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Figure 1: Resonance forms of isocyanides.
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Scheme 2: Comparison between the previous mechanochemical synthetic pathway [24] and the new adapted one in this ...
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Scheme 3: The scope of our isocyanide synthesis using aliphatic and aromatic primary formamides. Reaction con...
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Figure 2: The purification process of a brownish isocyanide on a short silica pad.
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Scheme 4: Suggested proton transfer mechanism.
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- Full Research Paper
- Published 24 Jun 2022
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Figure 1: Highly reactive dienophiles.
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Figure 2: Dibromide substrates and product 12.
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Scheme 1: Mechanochemical reaction of 10 with anthracene.
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Figure 3: Scope of the Zn/Cu reaction with dibromide 10 (dienes are colored in red).
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Scheme 2: Mechanochemical reaction of 11 with furan.
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Scheme 3: Reactivity of bicyclo[2.2.2] dibromide 42 with dienes.
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- Letter
- Published 18 Jul 2022
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Scheme 1: Development of the first solid-state palladium-catalyzed borylation protocol of aryl halides using ...
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Scheme 2: Substrate scope of solid aryl bromides. Reaction conditions: a mixture of 1 (0.30 mmol), 2 (0.36 mm...
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Scheme 3: Substrate scope of liquid aryl bromides. Reaction conditions: a mixture of 1 (0.30 mmol), 2 (0.36 m...
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Scheme 4: Reactions of solid aryl iodide and chloride. Reaction conditions: a mixture of 1 (0.30 mmol), 2 (0....
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Scheme 5: Solid-state borylation of aryl halides on a gram scale.
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- Full Research Paper
- Published 09 Aug 2022
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Figure 1: Representative examples of important halogen-containing aryl derivatives.
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Scheme 1: Strategies for halogenation of aromatic compounds using NXS.
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Scheme 2: General scheme of PEG-400-assisted halogenation of phenols and anilines in an automated grinder usi...
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Scheme 3: Monohalogenation of phenols and anilines by automated grinding with NXS. All yields refer to the is...
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Scheme 4: Dihalogenation of phenols and anilines with NXS by automated grinding. All yields refer to the isol...
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Scheme 5: Gram-scale monobromination of p-cresol by NBS in the automated grinder.
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- Letter
- Published 12 Sep 2022
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Scheme 1: a) Mechanochemical synthesis of g-PCN from sodium phosphide and trichlorotriazine (previous work [38]) ...
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Figure 1: PXRD patterns of g-h-PCN (green) and g-h-PCN300 (teal).
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Figure 2: XPS scans of a) C 1s, b) N 1s and c) P 2p for the pre-annealed g-h-PCN and d) C 1s, e) N 1s and f) ...
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Figure 3: 31P MAS NMR of a) g-h-PCN and b) g-h-PCN300. Asterisks denote spinning sidebands.
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Figure 4: Calculated structures for a) corrugated (edge facing), b) corrugated (single layer), c) layered g-h...
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- Perspective
- Published 14 Sep 2022
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Figure 1: Representation of (a) cavitation and elongational flow caused by pulsed ultrasonication, (b) mixer ...
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Scheme 1: (a) Mechanochemical activation of anthracene–endoperoxide mechanophore incorporated in the cross-li...
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Scheme 2: Mechanochemical activation of dendronized polymer-based compound 4 by ultrasonication and ball mill...
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Figure 2: Structure of cellulose and chitin and approximation to the structure of lignin.
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Figure 3: Tensile forces by ball milling change the conformation of a chitin model compound. This deformation...
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Figure 4: (a) Representation of a collision between the ball and a particle of a chitin sample and (b) mechan...
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Figure 5: (a) Ultrasound-induced ATRP using piezoelectric BaTiO3 and (b) mechanochemical atom transfer radica...
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Figure 6: Mechanochemical solid-state complexation of organic capsule 5 with fullerenes C70 in a planetary ba...
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Scheme 3: Comparative mechanochemical dissociation of the central C–C bond in TASN derivatives 6 and 8.
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- Letter
- Published 10 Oct 2022
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Figure 1: Representative asymmetric Co–salen catalysts.
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Scheme 1: Synthetic approach to our unsymmetrical Co–salen catalyst 2f for the asymmetric synthesis of α-aryl...
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Scheme 2: Mechanochemical one-pot two-step synthesis of unsymmetrical salens 1a–h. Reaction conditions: salic...
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Scheme 3: Synthesis of unsymmetrical metal–salen complexes 2. Reaction conditions a: metal acetate hydrate (1...
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