4 article(s) from Maison, Wolfgang
- Full Research Paper
- Published 07 May 2015
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Figure 1: A) Schematic drawing of a bifunctional anchor molecule and its immobilization on a nanoparticle (NP...
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Scheme 1: Synthesis of tripodal catecholates for surface immobilization. PEG-triscatecholate 3 was synthesize...
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Scheme 2: Synthesis of tripodal catecholate platforms 11 and 13 for surface functionalization.
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Figure 2: Catecholates for the immobilization on ZnO NPs.
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Figure 3: A) XRD pattern of ZnO NPs obtained by the colloidal suspension of Zn(acac)2. B) TEM image of pure Z...
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Figure 4: A) TGA data of catecholates 3, 13 and 14 immobilized on ZnO NPs: pure ZnO NPs treated with MOPS buf...
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Figure 5: A) TGA data of catecholates 3 and 14 immobilized on ZnO NPs: pure ZnO NPs treated with MOPS buffer ...
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Figure 6: TEM images of ZnO NPs. A) ZnO NPs coated with monomeric PEG-catecholate 14 after washing with water...
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- Full Research Paper
- Published 29 Oct 2013
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Figure 1: Selected biocatalytic allylic and benzylic oxidations with the lyophilisate of Pleurotus sapidus (P...
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Scheme 1: Biocatalytic allylic oxidation of theaspirane (1) with lyophilisates of PSA. Only one enantiomer of...
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Figure 2: Selected bioactive terpenoids based on spiroether backbones [38,39].
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Scheme 2: Intramolecular silyl modified Sakurai reaction to spiroethers 7–9 and 11–13.
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Scheme 3: Biocatalytic allylic oxidation of spiroethers 7, 8, 11 and 12 with the lyophilisate of PSA. Convers...
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Figure 3: Bond-dissociation enthalpies for three allylic C–H bonds in 11. Double stabilization of the radical...
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Scheme 4: Improved 3-step synthesis of vitispirane (23) from theaspirane (1). Only one enantiomer of racemic ...
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Scheme 5: Oxidation of vitispirane (23) with PSA gave enone 24 and two diastereomeric allyl alcohols 26a and ...
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- Full Research Paper
- Published 09 Feb 2012
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Figure 1: Hunter/Vögtle-type tetralactam macrocycle 1 bearing an iodo substituent at one of the isophthaloyl ...
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Scheme 1: Synthesis of the monovalent diamide axle 2, which was used for Sonogashira coupling to the appropri...
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Scheme 2: Synthesis of divalent wheels from TLM 1: (a), (b) (Ph3P)2PdCl2, CuI, PPh3, NEt3, DMF, 25 °C, 24 h, ...
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Scheme 3: Synthesis of trivalent wheel 14 from TLM 1: (a) (Ph3P)2PdCl2, CuI, PPh3, NEt3, DMF, 25 °C, 24 h, 40...
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Scheme 4: (a) Pd2(dba)3, AsPh3, NEt3, DMF, 120 °C, 12 h, 7% (16).
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Scheme 5: Synthesis of a series of multivalent guests starting from the axle 2. (a), (b), (c), (d): Pd2(dba)3...
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Scheme 6: Synthesis of the tetravalent axle 23 and its divalent side product: (a) Pd2(dba)3, AsPh3, NEt3, DMF...
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Figure 2: Aliphatic regions of the 1H NMR spectra (CD2Cl2, 500 MHz, 298 K, 2.3 mM) of (a) 10 (top), 17@10 (ce...
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- Full Research Paper
- Published 18 Dec 2007
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Figure 1: Ruthenium based precatalysts used in this study.
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Scheme 1: RORCM of 2-azabicycloalkenes 5 to bicyclic scaffolds 6.
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Scheme 2: RORCM of 7-azabicycloalkenes 8 and 10 to pyridone 9 and isoindole scaffold 11.
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Scheme 3: RORCM of 7-azabicycloalkenes 13 and 16 to bicyclic scaffolds 14, 15, 17 and 18. Conditions A: 10 mo...
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Scheme 4: ROCM of 7-azabicycloalkenes 7 and 12 to isoindole and pyrrolidine scaffolds 19 and 20.
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Scheme 5: Catalytic enantioselective desymmetrization of 7-azabicycloalkene 10 to scaffold 23.
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