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2 article(s) from Toupet, Loïc

Latent ruthenium–indenylidene catalysts bearing a N-heterocyclic carbene and a bidentate picolinate ligand

Thibault E. Schmid,
Florian Modicom,
Adrien Dumas,
Etienne Borré,
Loic Toupet,
Olivier Baslé and
Marc Mauduit

Beilstein J. Org. Chem. 2015, 11, 1541–1546, doi:10.3762/bjoc.11.169

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Scheme 1: Synthesis of [NHC(picolinate)RuCl(indenylidene)] complexes 2 and 4a.

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Scheme 2: Synthesis of complex 4a and 4b from (SIPr)(pyridine)RuCl₂(indenylidene) (5).

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Figure 1: Solid-state structure of complex 4a from single crystal X-ray diffraction. Hydrogens have been omit...

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Figure 2: Olefin metathesis profiles in response to TFA equivalents.

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Figure 3: Comparison of olefin metathesis profiles for catalysts 2, 4a and 4b after activation with 150 equiv...

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Figure 4: Influence of various acids for the activation of 4a in the RCM of DEDAM.

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Published 03 Sep 2015

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Phosphinocyclodextrins as confining units for catalytic metal centres. Applications to carbon–carbon bond forming reactions

Matthieu Jouffroy,
Rafael Gramage-Doria,
David Sémeril,
Dominique Armspach,
Dominique Matt,
Werner Oberhauser and
Loïc Toupet

Beilstein J. Org. Chem. 2014, 10, 2388–2405, doi:10.3762/bjoc.10.249

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Figure 1: CD-based mono- and diphosphines with inward-pointing phosphorus atoms.

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Scheme 1: Complexation of a "PdCl(dmba)" unit by HUGPHOS ligands.

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Scheme 2: Reaction of HUGPHOS-1 with [MCl₂(PhCN)₂] complexes (M = Pd, Pt). Only one isomer with a given MeO–M...

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Scheme 3: Synthesis of complexes 3–5.

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Figure 2: X-ray structure of aqua palladium complex 5 [44] (top: side view; bottom: view from the primary face). ...

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Scheme 4: Dehydration of Pd(II) complex 5.

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Figure 3: Ruthenium complexes 7 and 8 in Newman projection along the Ru–P bond.

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Figure 4: Titration of HUGPHOS-1 with [Rh(CO)₂Cl]₂ at 25 °C.

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Scheme 5: Synthesis of rhodium carbonyl complexes 9–11.

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Scheme 6: Synthesis of rhodium complexes 12 and 13.

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Scheme 7: Selective formation of complex 14 under 40 bar CO/H₂ at 80 °C.

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Figure 5: High pressure NMR spectra of 13 under CO/H₂ (1:1) recorded in toluene-d₈ (at various temperatures a...

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Figure 6: IR spectra of 14 recorded in CH₂Cl₂ at 50 °C under 40 bar of CO/H₂ 1:1.

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Figure 7: Calculated structures (Spartan 10) of trigonal bipyramidal [RhH(CO)₃(HUGPHOS-2)] with the phosphoru...

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Scheme 8: Possible mechanism for the hydroformylation of styrene when using monophosphine complexes 12 or 13 ...

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Scheme 9: Simplified Heck coupling mechanism when using HUGPHOS-1 or HUGPHOS-2 as ligands. Doted lines stand ...

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Published 15 Oct 2014

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