Emmanuel Nicolas Ingénieur-Chercheur

Publications

Article dans une revue (40)

Highly selective tandem electrocatalytic and thermocatalytic CO2 reduction to methanol using formic acid as intermediate Florian Lhostis,Nathan de Riggi,Ngoc‐tran Huan,Emmanuel Nicolas,Thibault Cantatet al. ChemCatChem, 2026, 18 (6), pp.e70682. ⟨10.1002/cctc.70682⟩ Article dans une revue hal-05569806v1
Catalytic reduction of Imines with silylformates: formation of silyl carbamates through CO$_2$ insertion Neethu Thyagarajan,Ruqaya Buhaibeh,Emmanuel Nicolas,Thibault Cantat Chemistry - A European Journal, 2025, 2025, pp.e202403907. ⟨10.1002/chem.202403907⟩ Article dans une revue cea-04969848v1
Water-mediated rhenium-catalyzed photodeoxygenation of polyfunctional organic N-oxides Nicolas Joly,Marianne Kjellberg,Alexis Bouchet,Emmanuel Nicolas,Thibault Cantatet al. Synthesis: Journal of Synthetic Organic Chemistry, 2025, ⟨10.1055/a-2649-0086⟩ Article dans une revue cea-05168219v1
Experimental evaluation of the hydricity of hydrosilanes Laurent Sévery,Emmanuel Nicolas,Alexis Mifleur,Thibault Cantat Inorganic Chemistry, 2025, 64 (26), pp.12927-12931. ⟨10.1021/acs.inorgchem.5c01201⟩ Article dans une revue hal-05455401v1
Simplified carbonylation catalyst based on [Co$_2$(CO)$_8$] and coordinating solvents for the carbonylation of β-lactones and α,β-unsaturated acids to cyclic anhydrides Marie-Hélène Pietraru,Antonin Homassel,Thibault Cantat,Emmanuel Nicolas ACS Sustainable Chemistry & Engineering, 2025, 13 (31), pp.12564. ⟨10.1021/acssuschemeng.5c04119⟩ Article dans une revue cea-05284666v1
H-Bond assisted cleavage of N-O bond in the electrochemical reduction of N$_2$O catalyzed by iron tetraphenylporphyrin Céline Naddour,Rana Deeba,Camille Chartier,Emmanuel Nicolas,Sylvie Chardon-Noblatet al. ACS Catalysis, 2025, 15 (11), pp.9393-9400. ⟨10.1021/acscatal.5c01965⟩ Article dans une revue hal-05061360v1
Inner-sphere electron transfer is rate limiting in the photoreduction of N -oxides by re-complexes Zineb El Moqaouil,Marianne Kjellberg,Winfried Leibl,Thibault Cantat,Lucile Anthore-Dalionet al. Organometallics, 2025, 44 (16), pp.1805-1814. ⟨10.1021/acs.organomet.5c00158⟩ Article dans une revue cea-05289001v1
Fluorophosphoniums as Lewis acids in organometallic catalysis: application to the carbonylation of β-lactones Marie-Hélène Pietraru,Louise Ponsard,Nicolas Lentz,Pierre Thuéry,Emmanuel Nicolaset al. Chemical Communications, 2024, 60 (8), pp.1043-1046. ⟨10.1039/d3cc04282k⟩ Article dans une revue hal-04660725v1
Formoxyboranes as hydroborane surrogates for the catalytic reduction of carbonyls through transfer hydroboration Gabriel Durin,R Martin Romero,Timothé Godou,Clément Chauvier,Pierre Thuéryet al. Catalysis Science & Technology, 2024, 14 (7), pp.1848-1853. ⟨10.1039/d3cy01702h⟩ Article dans une revue hal-04660726v1
Hydrogenolysis of haloboranes: from synthesis of hydroboranes to formal hydroboration reactions Guilhem Zwart,Alexis Mifleur,Gabriel Durin,Emmanuel Nicolas,Thibault Cantat Angewandte Chemie International Edition, In press, ⟨10.1002/anie.202411468⟩ Article dans une revue hal-04688981v1
Direct Enthalpy Measurement for Hydrogenation of Liquid Organic Hydrogen Carriers by Differential Scanning Calorimetry under H2 Pressure Florian d'Ambra,Vicent Faucheux,Emmanuel Nicolas,Thibault Cantat,Gérard Gébelet al. Industrial and engineering chemistry research, 2024, 63 (30), pp.13157-13168. ⟨10.1021/acs.iecr.4c01739⟩ Article dans une revue hal-04681564v1
Production of methane by catalytic decarboxylation of methyl formate as a liquid surrogate Nathan de Riggi,Arnaud Imberdis,Emmanuel Nicolas,Thibault Cantat Organometallics, 2024, pp.4c00023. ⟨10.1021/acs.organomet.4c00023⟩ Article dans une revue hal-04660735v1
Evaluation of acetophenone as a novel alcohol-cycloalkane bifunctional liquid organic hydrogen carrier (LOHC) Florian d'Ambra,Julia Levy,Parviz Hajiyev,Thibault Cantat,Gérard Gébelet al. International Journal of Hydrogen Energy, 2023, 48 (85), pp.33207-33222. ⟨10.1016/j.ijhydene.2023.05.024⟩ Article dans une revue cea-04440528v1
Vers la synthèse de réducteurs renouvelables à base de silicium Gabriel Durin,Jean-Claude Berthet,Emmanuel Nicolas,Thibault Cantat L'Actualité Chimique, 2023, 487, pp.14-20 Article dans une revue cea-04440659v1
Fluorophosphoniums as Lewis acids in organometallic catalysis: application in cobalt-catalyzed carbonylation of β-lactones Marie-Hélène Pietraru,Louise Ponsard,Nicolas Lentz,Pierre Thuéry,Emmanuel Nicolaset al. Chemical Communications, 2023, 60 (8), pp.1043-1046. ⟨10.26434/chemrxiv-2023-d3r4g⟩ Article dans une revue cea-04440608v1
Metal‐Free Catalytic Hydrogenolysis of Chlorosilanes into Hydrosilanes with “Inverse” Frustrated Lewis Pairs Gabriel Durin,Jean‐claude Berthet,Pierre Thuéry,Emmanuel Nicolas,Thibault Cantat Chemistry - A European Journal, 2023, 29 (61), ⟨10.1002/chem.202302155⟩ Article dans une revue hal-04236744v1
Catalytic Carbonylation of Acrylic Acid to Succinic Anhydride Marie‐Hélène Pietraru,Nicolas Lentz,Louise Ponsard,Emmanuel Nicolas,Thibault Cantat ChemCatChem, 2023, 15 (21), ⟨10.1002/cctc.202300720⟩ Article dans une revue cea-04440571v1
Metal‐Free Catalytic Hydrogenolysis of Silyl Triflates and Halides into Hydrosilanes Gabriel Durin,Albane Fontaine,Jean‐claude Berthet,Emmanuel Nicolas,Pierre Thuéryet al. Angewandte Chemie International Edition, 2022, 61 (23), pp.e202200911. ⟨10.1002/anie.202200911⟩ Article dans une revue hal-04097568v1
Additive-free formic acid dehydrogenation catalyzed by a cobalt complex Lentz Nicolas,Alicia Aloisi,Pierre Thuéry,Emmanuel Nicolas,Thibault Cantat Organometallics, 2021, 40 (5), pp.565-569. ⟨10.1021/acs.organomet.0c00777⟩ Article dans une revue cea-02933763v2
A copper(I)‐catalyzed sulfonylative Hiyama cross‐coupling Aurélien Adenot,Lucile Anthore-Dalion,Emmanuel Nicolas,Jean-Claude Berthet,Pierre Thuéryet al. Chemistry - A European Journal, 2021, 27 (72), pp.18047-18053. ⟨10.1002/chem.202103371⟩ Article dans une revue cea-03547768v1
The Role of ($^{tBu}$POCOP)Ir(I) and iridium(III) pincer complexes in the catalytic hydrogenolysis of silyl triflates into hydrosilanes Gabriel Durin,Jean-Claude Berthet,Emmanuel Nicolas,Thibault Cantat Organometallics, 2021, 2021 (41), pp.1786-1796. ⟨10.1021/acs.organomet.1c00576⟩ Article dans une revue cea-03547778v1
Unlocking the catalytic hydrogenolysis of chlorosilanes into hydrosilanes with superbases Gabriel Durin,Jean-Claude Berthet,Emmanuel Nicolas,Thibault Cantat ACS Catalysis, 2021, 11 (17), pp.10855-10861. ⟨10.1021/acscatal.1c01515⟩ Article dans une revue cea-03547774v2
Catalytic challenges and strategies for the carbonylation of $\sigma$-bonds Tawfiq Nasr Allah,Louise Ponsard,Emmanuel Nicolas,Thibault Cantat Green Chemistry, 2021, 23, pp.723-739. ⟨10.1039/d0gc02343d⟩ Article dans une revue cea-03096007v1
Copper–Ligand Cooperativity in H 2 Activation Enables the Synthesis of Copper Hydride Complexes Alicia Aloisi,Étienne Crochet,Emmanuel Nicolas,Jean-Claude Berthet,Camille Lescotet al. Organometallics, 2021, 40 (13), pp.2064-2069. ⟨10.1021/acs.organomet.1c00212⟩ Article dans une revue hal-03432183v1
Photocatalytic deoxygenation of N–O bonds with Rhenium complexes: from the reduction of nitrous oxide to pyridine N-oxides Marianne Kjellberg,Alexia Ohleier,Pierre Thuéry,Emmanuel Nicolas,Lucile Anthore-Dalionet al. Chemical Science, 2021, 2021 (12), pp.10266-10272. ⟨10.1039/D1SC01974K⟩ Article dans une revue cea-03277737v2
Coupling electrocatalytic CO2 reduction with thermocatalysis enables the formation of a lactone monomer Marc Fontecave,Louise Ponsard,Emmanuel Nicolas,Ngoc Huan Tran,Sarah Lamaisonet al. ChemSusChem, 2021, 14 (10), pp.2198-2204. ⟨10.1002/cssc.202100459⟩ Article dans une revue cea-03166022v1
[(dcpp)Ni( η 2 -Arene)] Precursors: Synthesis, Reactivity, and Catalytic Application to the Suzuki–Miyaura Reaction Florian D’accriscio,Alexia Ohleier,Emmanuel Nicolas,Matthieu Demange,Olivier Thillaye Du Boullayet al. Organometallics, 2020, 39 (10), pp.1688-1699. ⟨10.1021/acs.organomet.9b00834⟩ Article dans une revue hal-02911077v1
Carbonylation of C-N Bonds in Tertiary Amines Catalyzed by Low Valent Iron Catalysts Tawfiq Nasr Allah,Solène Savourey,Jean-Claude Berthet,Emmanuel Nicolas,Thibault Cantat Angewandte Chemie International Edition, 2019, 58, pp.10884-10887. ⟨10.1002/anie.201903740⟩ Article dans une revue cea-02145076v1
[​4+2] versus [​2+2] Homodimerization in P(V) Derivatives of 2,4-Disubstituted Phospholes Guillaume Bousrez,Emmanuel Nicolas,Agathe Martinez,Sylviane Chevreux,Florian Jaroschik Heteroatom Chemistry, 2019, 2019, pp.2596405. ⟨10.1155/2019/2596405⟩ Article dans une revue cea-02092318v1
Catalytic Metal-Free Deoxygenation of Nitrous Oxide with Disilanes Lucile Anthore-Dalion,Emmanuel Nicolas,Thibault Cantat ACS Catalysis, 2019, 9, pp.11563-11567. ⟨10.1021/acscatal.9b04434⟩ Article dans une revue cea-02372787v1
Synthesis, Characterization and Reactivity of Formal 20 Electron Zirconocene-Pentafulvene Complexes Florian Jaroschik,Manfred Penkhues,Bernard Bahlmann,Emmanuel Nicolas,Malte Fischeret al. Organometallics, 2017, 36 (10), pp.2004-2013. ⟨10.1021/acs.organomet.7b00213⟩ Article dans une revue hal-01996040v1
A Significant but Constrained Geometry Pt→Al Interaction: Fixation of CO 2 and CS 2 , Activation of H 2 and PhCONH 2 Marc Devillard,Richard Declercq,Emmanuel Nicolas,Andreas Ehlers,Jana Backset al. Journal of the American Chemical Society, 2016, 138 (14), pp.4917-4926. ⟨10.1021/jacs.6b01320⟩ Article dans une revue hal-03539232v1
“(Diphosphine)Nickel”-Catalyzed Negishi Cross-Coupling: An Experimental and Theoretical Study Emmanuel Nicolas,Alexia Ohleier,Florian d'Accriscio,Anne-Frédérique Pécharman,Matthieu Demangeet al. Chemistry - A European Journal, 2015, 21 (21), pp.7690-7694 Article dans une revue hal-02001069v1
Dative Au→Al Interactions: Crystallographic Characterization and Computational Analysis Marc Devillard ,Emmanuel Nicolas,Andreas Ehlers,Jana Backs,Sonia Mallet-Ladeiraet al. Chemistry - A European Journal, 2015, 21 (1), pp.74-79. ⟨10.1002/chem.201405610⟩ Article dans une revue istex hal-03539254v1
Ti-mediated intramolecular cyclopropanation of N-alkenyl thioamides: scope and mechanistic study Fabien Hermant,Emmanuel Nicolas,Yvan Six Tetrahedron, 2014, 70 (25), pp.3924-3930. ⟨10.1016/j.tet.2014.04.006⟩ Article dans une revue istex hal-01015278v1
Reductive Alkylation of Thioamides with Grignard Reagents in the Presence of Ti(OiPr)4: Insight and Extension Fabien Hermant,Ewelina Urbańska,Sarah Seizilles de Mazancourt,Thomas Maubert,Emmanuel Nicolaset al. Organometallics, 2014, 33 (20), pp.5643-5653. ⟨10.1021/om500603v⟩ Article dans une revue hal-01098819v1
Novel zwitterionic complexes arising from the coordination of an ambiphilic phosphorus–aluminum ligand to gold Marc Devillard,Emmanuel Nicolas,Christian Appelt,Jana Backs,Sonia Mallet-Ladeiraet al. Chemical Communications, 2014, 50 (94), pp.14805-14808. ⟨10.1039/C4CC06992G⟩ Article dans une revue hal-03539248v1
CO Activation by (Diphosphane)platinum(0): Carbonate and Acetone Formation - Experimental and Mechanistic Study Nicolas Mézailles,Grégory Nocton,Emmanuel Nicolas European Journal of Inorganic Chemistry, 2013, 22-23, pp.4000-4007. ⟨10.1002/ejic.201300182⟩ Article dans une revue istex hal-00906325v1
Reactivity differences between 2,4- and 2,5-disubstituted zirconacyclopentadienes: a highly selective and general approach to 2,4-disubstituted phospholes. Guillaume Bousrez,Florian Jaroschik,Agathe Martinez,Dominique Harakat,Emmanuel Nicolaset al. Dalton Transactions, 2013, epub ahead of print. ⟨10.1039/c3dt51158h⟩ Article dans une revue hal-00839784v1
Room temperature reversible C-H activation mediated by a Pt(0) center, and stoichiometric biphenyl formation via solvent activation. Emmanuel Nicolas,X. F Le Goff,Stéphane Bouchonnet,Nicolas Mézailles Chemical Communications, 2012, 48 (67), pp.8350-2. ⟨10.1039/c2cc33847e⟩ Article dans une revue hal-00823000v1

Communication dans un congrès (9)

Catalytic carbonylation of β-lactones and α,β-unsaturated acids to cyclic anhydrides Antonin Homassel,Marie-Hélène Pietraru,Emmanuel Nicolas,Thibault Cantat ISGC 2025 - International Symposium on Green Chemistry, May 2025, La Rochelle, France Communication dans un congrès cea-05110756v1
Prediction of chemical reaction properties: a journey between chemistry and computer science Timothée M Petitjean,Nikita Salov,Eugénie Roméro,Emmanuel Nicolas Congrès Pluridisciplinaire Junior 2025, May 2025, Gif-sur-Yvette | Île-de-France, France Communication dans un congrès cea-05201814v1
Copper-mediated electrophilic trifluoromethylation of amines Alexandre Touron,Uroš Todorović,Laurent Severy,Thibault Cantat,Emmanuel Nicolaset al. SECO 62 - Semaine d'Etudes en Chimie Organique, May 2025, Fournols, France Communication dans un congrès hal-05537773v1
Copper-mediated electrophilic trifluoromethylation of amines Lucile Anthore-Dalion,Alexandre Touron,Uros Todorovic,Laurent Severy,T Cantatet al. EuCOMC 2025 - XXVI European Conference on Organometallic Chemistry, Jul 2025, Berne, Switzerland Communication dans un congrès hal-05537844v1
Scandium-catalyzed deoxygenation of alcohols and ketones using hydrosilanes as reductants Neethu Thyagarajan,Guillaume Bousrez,Louis Monsigny,Emmanuel Nicolas,Thibault Cantat ECIRM 2024 - 6th European Colloquium on Inorganic Reaction Mechanisms, Sep 2024, Toulouse, France Communication dans un congrès cea-04969857v1
Catalytic carbonylation of acrylic acid to succinic anhydride: en route to the synthesis of a bio-based monomer Marie-Hélène Pietraru,Louise Ponsard,Nicolas Lentz,Emmanuel Nicolas,Thibault Cantat Symposium International sur la chimie durable (ISGC 2022), May 2022, La Rochelle, France Communication dans un congrès cea-03675178v1
Photocatalytic deoxygenation of nitrogen oxide compounds Marianne Kjellberg,Emmanuel Nicolas,Lucile Anthore-Dalion,Alexia Ohleier,Annamaria Quarantaet al. GECOM-CONCOORD 2022, May 2022, Sévrier, France Communication dans un congrès cea-03662299v1
Photocatalytic deoxygenation of nitrogen oxide compounds Marianne Kjellberg,Annamaria Quaranta,Emmanuel Nicolas,Lucile Anthore-Dalion,Alexia Ohleieret al. Symposium International sur la chimie durable (ISGC 2022), May 2022, La Rochelle, France Communication dans un congrès cea-03675180v1
Catalytic carbonylation of acrylic acid to succinic anhydride: en route to the synthesis of a bio-based monomer Marie-Hélène Pietraru,Louise Ponsard,Nicolas Lentz,Emmanuel Nicolas,Thibault Cantat GreenCAt 2022 - 4th International Green Catalysis Symposium, Apr 2022, Rennes, France Communication dans un congrès cea-03654519v1

Poster de conférence (14)

Copper-mediated trifluoromethylation of amines Alexandre Touron,Uroš Todorović,Laurent Sévery,Emmanuel Nicolas,Thibault Cantatet al. SCF JCO 2025 - Journées de Chimie Organique, Oct 2025, Palaiseau, France. , JCO 2025 Abstracts Books Poster de conférence hal-05537824v1
[1,2]-thiazete S,S-dioxide scaffold synthesis Virgil Pierron,Alexandre Touron,Pierre Thuéry,Emmanuel Nicolas,Lucile Anthore-Dalion Journée de printemps de la DCO 2025, Mar 2025, Lyon, France Poster de conférence cea-05110769v1
Combining machine learning and HTE: evaluating low data regimes for accurate yield predictions Timothée M Petitjean,Nikita Salov,Eugénie Roméro,Emmanuel Nicolas 8th Machine Learning and AI in Bio(Chemical) Engineering Conference, Jul 2025, Cambridge, United Kingdom. Poster de conférence cea-05201823v1
Rh-catalysed decarboxylative-sulfonylation for synthesis of thiazete dioxide scaffold Virgil Pierron,Alexandre Touron,Pierre Thuéry,Maxime Tricoire,Emmanuel Nicolaset al. Rencontre de Chimie Organique 2025, Jun 2025, Versailles, France Poster de conférence cea-05110764v1
Copper-mediated electrophilic trifluoromethylation of amines Alexandre Touron,Uros Todorović,Laurent Severy,Emmanuel Nicolas,T Cantatet al. ESOC 2025 - The 23rd European Symposium on Organic Chemistry, Jun 2025, Copenhague, Denmark. Poster de conférence hal-05537799v1
An Experimental Evaluation of the Hydricity of Hydrosilanes Laurent Sévery,Emmanuel Nicolas,Alexis Mifleur,Thibault Cantat Swiss Chemical Society (SCF) Fall Meeting 2025, Sep 2025, Zurich- University of Zurich, Switzerland Poster de conférence hal-05495694v1
Direct reduction of atmospheric CO2 by copper complexes Maël Bressoux,Thibault Cantat,Emmanuel Nicolas ISOC 2025 - XV International School of Organometallic Chemistry, Sep 2025, Camerino, Italy Poster de conférence hal-05248501v1
A Combination of DFT and Spectroscopy Solves Photocatalytic Mechanisms: the Case of N-O bonds Emmanuel Nicolas,Marianne Kjellberg,Zineb El Moqaouil,Lucile Anthore-Dalion,Annamaria Quarantaet al. DFT 2024, Aug 2024, Paris, France Poster de conférence hal-04689021v1
Scandium-catalyzed deoxygenation of alcohols and ketones using hydrosilanes as reductants Ruqaya Buhaibeh,Neethu Thyagarajan,Guillaume Bousrez,Louis Monsigny,Emmanuel Nicolaset al. XXIII ISHC - XXIII International Symposium on Homogeneous Catalysis, Jul 2024, Trieste, Italy Poster de conférence cea-04969863v1
Catalytic carbonylation of acrylic acid to succinic anhydride: en route to the synthesis of a bio-based monomer Marie-Hélène Pietraru,Louise Ponsard,Nicolas Lentz,Emmanuel Nicolas,Thibault Cantat Catalysis at the Energy - Chemistry Nexus 2022 Winter School, Mar 2022, Aussois, France. Poster de conférence cea-03654542v1
Understanding the catalytic carbonylation of epoxides for the valorization of carbon monoxide Louise Ponsard,Emmanuel Nicolas,Thibault Cantat GECOM-CONCOORD 2019, May 2019, Erquy, France Poster de conférence cea-02339556v1
Catalytic hydrogenolysis of silyl triflates to hydrosilanes using iridium pincer complexes Gabriel Durin,Jean-Claude Berthet,Emmanuel Nicolas,Pierre Thuéry,Thibault Cantat 12th International Scholl on Organometallic Chemistry “Marcial Moreno Mañas”, Jun 2019, Castellon, Spain Poster de conférence cea-02329217v1
Formic acid disproportionation to methanol and CO$_2$ reduction Emmanuel Nicolas,Alicia Aloisi,Solene Savourey,Thibault Cantat GYSS@one-North, Jan 2018, Singapore, Singapore Poster de conférence cea-02339603v1
To Bend or Not to Bend: Is CO2 Bending Required to Promote its Reduction? Emmanuel Nicolas,Niklas von Wolff,Thibault Cantat EuCOMC 2017, Jul 2017, Amsterdam, Netherlands Poster de conférence cea-02346348v1

Pré-publication, Document de travail (5)

A versatile and fast photocatalyzed deoxygenation of organic N-oxides with a rhenium complex in the presence of H$_2$O Nicolas Joly,Marianne Kjellberg,Alexis Bouchet,Emmanuel Nicolas,Thibault Cantatet al. 2024 Pré-publication, Document de travail hal-04751432v1
Metal-free catalytic hydrogenolysis of silyl triflates and halides into hydrosilanes Gabriel Durin,Albane Fontaine,Jean-Claude Berthet,Emmanuel Nicolas,Pierre Thuéryet al. 2022 Pré-publication, Document de travail cea-03540549v1
The Role of (tBuPOCOP)Ir(I) and iridium(III) Pincer Complexes in the Catalytic Hydrogenolysis of Silyl Triflates into Hydrosilanes Gabriel Durin,Jean-Claude Berthet,Emmanuel Nicolas,Pierre Thuéry,Thibault Cantat 2021 Pré-publication, Document de travail cea-03320572v1
Copper-Ligand Cooperativity in H$_2$ Activation Enables the Synthesis of Copper Hydride Complexes Alicia Aloisi,Étienne Crochet,Emmanuel Nicolas,Jean-Claude Berthet,Camille Lescotet al. 2021 Pré-publication, Document de travail cea-03132894v1
A copper(I)-catalyzed sulfonylative Hiyama cross-coupling Aurélien Adenot,Emmanuel Nicolas,Lucile Anthore-Dalion,Jean-Claude Berthet,Pierre Thuéryet al. 2021 Pré-publication, Document de travail cea-03284987v1

Thèse (1)

Complexes de métaux réduits : Activation de liaisons C H et de petites molécules Emmanuel Nicolas Chimie inorganique. Ecole Polytechnique, 2013. Français. ⟨NNT : ⟩ Thèse tel-01348272v1

HDR (1)

Petites Molécules pour la Chimie : Études Expérimentales et Théoriques Emmanuel Nicolas Catalyse. Université Paris-Saclay, 2024 HDR tel-04660760v1