nanyang research conference synthetic chemistry and...

Co-Organisers Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences Institute of Advanced Studies

Nanyang Research Conference Synthetic Chemistry

and Catalysis 15 - 17 January 2020

Nanyang Technological University, Singapore

Contents

PAGE

Program Overview 3

Nobel Laureate Public Lecture 4

Conference Schedule 5

Poster Presentations 9

Exhibitors 15

Poster Awards Sponsors 16

Conference Sponsors 19

Special Acknowledgement 24

For the Abstracts of Speakers and Poster Presenters, please scan the QR code below to

access the e-book.

3

Program Overview

Venue: Nanyang Executive Centre Auditorium, NTU

15 Jan 2020 (Wed) 16 Jan 2020 (Thur) 17 Jan 2020 (Fri)

AM

Registration

Keynote Lectures & Invited Talks


PM

Registration

Lunch & Poster

Session

Lunch & Poster

Session Welcome Address

Keynote Lectures &

Invited Talks



Nobel Laureate

Public Lecture by Prof Ryoji Noyori

& Prof Ben Feringa (venue: Tan Chin Tuan

Lecture Theatre)

Conference Closing & Poster Awards

Presentation

Poster Session & Networking Dinner

5

Nanyang Research Conference: Synthetic Chemistry and Catalysis 15-17 Jan 2020

Conference Schedule Venue: Nanyang Executive Centre Auditorium, NTU

DAY ONE (15 JANUARY 2020, WEDNESDAY)

13:00 - 14:00 Registration and Welcome Refreshments

14:00 - 14:10 Welcome Address by Scientific Chair Shunsuke CHIBA Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences, Nanyang Technological University

Session Chair: Shunsuke CHIBA 14:10 - 14:55 Teck Peng LOH (Nanyang Technological University)

Development of New and Practical Green Synthetic Methods

14:55 - 15:40 Richmond SARPONG (University of California, Berkeley) Break-it-to-Make-it Strategies for Complex Molecule Synthesis

15:40 - 16:10 Coffee break

16:10 - 16:55 Yu ZHAO (National University of Singapore) Catalytic Enantioselective Redox-Neutral Processes for Efficient Chemical Synthesis

Session Chair: Yu Zhao

16:55 - 17:15 Shingo ITO (Nanyang Technological University) Polycyclic Aromatic Azomethine Ylide for Efficient Synthesis of Nitrogen-Containing Polycyclic Aromatic Molecules

17:15 - 17:35 Yuuya NAGATA (Kyoto University) Asymmetric Catalysis in Chiral Solvents Enabled by Macromolecular Scaffolds

17:35 - 17:55 Han Sen SOO (Nanyang Technological University) Unifying Artificial Photosynthesis and Photoredox Catalysis by C-C Bond Activation

17:55 - 18:40 David PROCTER (University of Manchester) Sulfoxides as Substrate Activators: New Cross-Couplings for Materials and Medicines

18.45 - 21:00 Poster Session & Networking Dinner

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DAY TWO (16 JANUARY 2020, THURSDAY)

Session Chair: Felipe GARCIA (Nanyang Technological University)

09:00 - 09:45 Eva HEVIA (University of Bern) Bespoke Bimetallics for Chemical Cooperativity

09:45 - 10:05 Bin TAN (Southern University of Science and Technology) Asymmetric Axial Chirality Chemistry

10:05 - 10:25 Jun SHIMOKAWA (Kyoto University) Syntheses of Heteropolycyclic Natural Products


Session Chair: Jie WU (National University of Singapore)

10:55 - 11:40 Nuno MAULIDE (University of Vienna) The Beautiful Simplicity of Rearrangements: Making Difficult Bonds the Easy Way

11:40 - 12:00 Takaaki SATO (Keio University) Unified Total Synthesis of Stemoamide-Type Alkaloids by Chemoselective Assembly of Five-Membered Building Blocks

12:00 - 12:20 Junfeng ZHAO (Jiangxi Normal University) Ynamide Coupling Reagent: Discovery and Application

12:20- 14:00 Lunch & Poster Session

Session Chair: Shingo ITO (Nanyang Technological University)

14:00 - 14:45 Yixin LU (National University of Singapore) Enantioselective Organic Reactions Catalyzed by Amino Acid-Derived Bifunctional Phosphines

14:45 - 15:05 Felipe GARCIA (Nanyang Technological University) Mechanochemistry: New Opportunities and Challenges in Synthetic Chemistry

15:05 - 15:35 Group Photo & Coffee break

15:50 Adjourn to Tan Chin Tuan Lecture Theatre for Nobel Public lecture

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NOBEL PUBLIC LECTURE (Venue: Tan Chin Tuan Lecture Theatre) 16:30 - 16:45

Welcome Remarks by: Choon Hong TAN Chair, School of Physical and Mathematical Sciences, NTU; President, Singapore National Institute of Chemistry LING San Deputy President and Provost, NTU

16:45 - 17:45 Ryoji NOYORI (Nobel Laureate in Chemistry 2001) Where Am I From? Where Are You Going?

17:45 - 18:45 Ben FERINGA (Nobel Laureate in Chemistry 2016) Exploring Chiral Space in Catalysis

18:45 - 19:00 Presentation of mementos & group photo-taking

DAY THREE (17 JANUARY 2020, FRIDAY)

Session Chair: Han Sen SOO (Nanyang Technological University) 09:00 - 09:45 Corinna SCHINDLER (University of Michigan)

Catalytic Carbonyl-Olefin Metathesis and Oxygen Atom Transfer

09:45 - 10:05 Ming Joo KOH (National University of Singapore) Nickel-Catalyzed Reductive Functionalizations of Unactivated Alkenes

10:05 - 10:25 Laurean ILIES (RIKEN Center for Sustainable Resource Science) C-H Activation with Earth-Abundant Metals

10:25 - 10:45 Shaozhong GE (National University of Singapore) Cobalt-Catalyzed Synthesis of gem-Bis(boryl)alkanes from Unsaturated Hydrocarbons


Session Chair: Ming Joo KOH (National University of Singapore)

11:15 - 12:00 Franziska SCHOENEBECK (RWTH Aachen University) Insight-Driven Strategies in Catalysis for Selective Functionalizations

12:00 - 12:20 Yifeng WANG (University of Science and Technology of China) NHC-Boryl Radical Enabled New Synthesis and Catalysis

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12:20 - 12:40 Hongli BAO (Fujian Institute of Research on the Structure of Matter, Chinese

Academy of Sciences) Reactions Enabled by Alkyl Peroxides

12:40 - 13:00 James David NOBBS (Institute of Chemical and Engineering Sciences, A*STAR Singapore) Tandem Isomerising Carbonylation Reactions using Heterocyclic Phosphine Ligands

13:00 - 14:00 Lunch & Poster Session

Session Chair: Yifeng WANG (University of Science and Technology of China)

14:00 – 14:45 Corey STEPHENSON (University of Michigan) Redox Catalysis Strategies for Complex Molecules

14:45 - 15:05 Zhiwei ZUO (ShanghaiTech University) LMCT Catalysis for Selective Functionalization of Strong Bonds

15:05 - 15:25 Soon Hyeok HONG (Korea Advanced Institute of Science and Technology) Direct C(sp3)-H Functionalization of Unactivated, Nondirected C(sp3)-H Bonds Enabled by Metallaphotoredox Catalysis

15:25 - 15:45 Jie WU (National University of Singapore) Neutral Eosin Y as a Direct Hydrogen Atom Transfer Photocatalyst for C-H and Si-H Functionalization


Session Chair: Shunsuke CHIBA 16:05 - 16:50 Paolo MELCHIORRE (The Institute of Chemical Research of Catalonia)

Organocatalysis in the Excited State

16:50 - 17:35 Choon Hong TAN (Nanyang Technological University) Chiral Cationic Ion-Pairing Catalysis

17:35 - 17:50 Conference Closing & Poster Awards Presentation

Please note that taking pictures and videos of the presentations shown on screen is strictly forbidden at the Conference & Nobel Laureate Public Lecture.

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Poster Presentations

Poster ID Name Poster Title

PP 01 Qiangqiang LI Division of Chemistry & Biological Chemistry, Nanyang Technological University

Synthetic Study of 9a-Azaphenalenyl

PP 02 Xiaodong TANG Department of Chemistry, National University of Singapore

A Dielectrophilic Allenic Ketone-Enabled (4+2) Annulation with 3,3’-Bisoxindoles: Enantioselective Creation of Two Contiguous Quaternary Stereogenic Centers

PP 03 Yoshiya SEKIGUCHI Division of Chemistry & Biological Chemistry, Nanyang Technological University

Zinc-Catalyzed Enantioselective Conjugate Addition of Cyclopropanols via Homoenolates

PP 04 David WHALLEY Institute of Chemical and Engineering Sciences, A*STAR Singapore

Metal-Free, Visible Light Mediated Smiles Rearrangements

PP 05 Xinjiang ZHANG Division of Chemistry & Biological Chemistry, Nanyang Technological University

Synthetic Study of Highly Curved Azabuckybowls Having a Pentalene Core

PP 06 Guangjian MEI Department of Chemistry, National University of Singapore

Enantioselective Dearomatization of Indoles via an Azoalkene-enabled (3 + 2) Reaction: Facile Access to Pyrroloindolines

PP 07 Changsheng WANG Division of Chemistry & Biological Chemistry, Nanyang Technological University

Cobalt/Lewis Acid Cooperative Catalysis for Hydrocarbofunctionalization of Alkynes

PP 08 Jonathan HILL National Institute for Materials Science, Tsukuba

Stable Pyrazinacenes up to Tetradecaazaheptacene: Structures and Properties

PP 09 Kek Foo CHIN Division of Chemistry & Biological Chemistry, Nanyang Technological University

Visible Light Driven Cascade Carbon-Carbon Bond Scission for Organic Transformations and Plastics Recycling

PP 10 Jia Nuo LEUNG Department of Chemistry, National University of Singapore

Spectroscopically Determined Donor Strengths of Substituted Pyridines and Its Correlation to Sigma Hammett Constants

PP 11 Wei DING Division of Chemistry & Biological Chemistry, Nanyang Technological University

Stereoselective Synthesis of Highly Substituted Vinyl Ethers via Iodo(III)alkoxylation of Alkynes

PP 12 Choon Wee KEE Institute of Chemical and Engineering Sciences, A*STAR Singapore

Synthesis of 18F-difluoromethylarenes using Aryl Boronic Acids, Ethyl Bromofluoroacetate and [18F]fluoride

PP 13 Bi Xiang LEONG Division of Chemistry & Biological Chemistry, Nanyang Technological University

A Versatile NHC-Parent Silyliumylidene Cation for Catalytic Chemo- and Regioselective Hydroboration

PP 14 Mingyue WU Department of Chemistry, National University of Singapore

Cyclohexyl-Fused, Spirobiindane-Derived, Phosphine-Catalyzed Synthesis of Tricyclic γ-Lactams and Kinetic Resolution of γ-Substituted Allenoates

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PP 15 Weiting KO

Division of Chemistry & Biological Chemistry, Nanyang Technological University

Towards the Total Synthesis of Trichoether A

PP 16 Daniel PAYNE National Institute for Materials Science, Tsukuba

Porphyrinoids as Nanomolecular Sensors and Asymmetric Catalysts

PP 17 Ajaz Ahmad DAR Division of Chemistry & Biological Chemistry, Nanyang Technological University

A New Synthesis of Aza-based 𝜋𝜋-Systems - A Step towards Nanographenes

PP 18 Guoqiang YANG Department of Chemistry, National University of Singapore

Practical Cascade Processes for Redox-Neutral Heterocycle Synthesis

PP 19 Pattarakiat SEANKONGSUK Division of Chemistry & Biological Chemistry, Nanyang Technological University

Synthesis of Mycobacterium Tuberculosis ATP Synthase Inhibitors

PP 20 Jie An YANG Davies Collision Cave Asia Pte Ltd, Singapore

Chemistry in the Pharmaceutical Industry: Tracing the Synthesis of Sildenafil Citrate

PP 21 Viktor BARAT Division of Chemistry & Biological Chemistry, Nanyang Technological University

An Efficient Synthetic Strategy for Polysulfonylated PAHs

PP 22 Thang Loi PHAM Division of Chemistry & Biological Chemistry, Nanyang Technological University

New Approach to the Synthesis of Neopeltolide

PP 23 Mandeep Kaur CHAHAL National Institute for Materials Science, Tsukuba

Evolution of Oxoporphyrinogens from Sensing to Organocatalysis

PP 24 Yong TEOH Division of Chemistry & Biological Chemistry, Nanyang Technological University

Mechanochemical Synthesis of Corannulene

PP 25 Jun Yang ONG Department of Chemistry, National University of Singapore

NHC-Catalyzed Stereoselective Propargylic Substitution and Cascade Cyclization

PP 26 Annabel Xuan Ying HO Division of Chemistry & Biological Chemistry, Nanyang Technological University

Towards the Total Synthesis of Montanacin D

PP 27 Hong YAN College of Chemistry and Chemical Engineering, Xiamen University

Photoelectrochemical C–H Alkylation of Heteroarenes with Organotrifluoroborates

PP 28 Dzeneta HALILOVIC Division of Chemistry & Biological Chemistry, Nanyang Technological University

Extension of Corannulene Core: Photochemical Strategy

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PP 29 Yongbing LIU Department of Chemistry, National University of Singapore

Redox-Neutral, Stereoconvergent Heterocycle Functionalization via Borrowing Hydrogen

PP 30 Anders Yang Feng SEE Division of Chemistry & Biological Chemistry, Nanyang Technological University

Towards the Synthesis of Samroiyotmycins A & B

PP 31 Taiki FUJITA Graduate School of Pharmaceutical Science, The University of Tokyo

Chemo- and Enantioselective Allyl Migration of Allyl Ester by Boron/Palladium Hybrid Catalysis

PP 32 Kei OTA Division of Chemistry & Biological Chemistry, Nanyang Technological University

σ-Bonding between Two π-Orbitals in Zwitterionic Inorganic Benzene Valence Isomer

PP 33 Lin HAO Division of Chemistry & Biological Chemistry, Nanyang Technological University

Mild and Safe Synthetic Organic Electroreduction of Alkenes and Alkynes through Carbanions

PP 34 Peng XIONG College of Chemistry and Chemical Engineering, Xiamen University

Electrochemically Enabled Carbohydroxylation of Alkenes with H2O and Organotrifluoroborates

PP 35 Gillian Kor Hwee GOH Division of Chemistry & Biological Chemistry, Nanyang Technological University

Synthesis, Structure and Reactivity of Diazadiborinines

PP 36 Richa GUPTA Department of Chemistry, National University of Singapore

Selective C-F bond Functionalization of Polyfluorocarbon Using Frustrated Lewis Pair Approach

PP 37 Yingguo LIU Division of Chemistry & Biological Chemistry, Nanyang Technological University

Catalytic Asymmetric Acetalization of Carboxylic Acids for Access to Chiral Phthalidyl Ester Prodrugs

PP 38 Shohei AOKI Department of Applied Chemistry, Osaka University

Pd/Cu Co-Catalyzed Regiodivergent Ring-Opening C–Si Bond-Forming Reactions of 2-Arylaziridines with Silylborane

PP 39 Weiqiang ZHOU Division of Chemistry & Biological Chemistry, Nanyang Technological University

Impeding Catalyst Poisoning in Solution by Metal-Organic Framework Composites

PP 40 Hendrik TINNERMANN Department of Chemistry, National University of Singapore

Ligand Centered Reactivity of PCP Pincer Complexes in Dechalcogenation Reactions

PP 41 Chengli MOU Division of Chemistry & Biological Chemistry, Nanyang Technological University

Carbene-Catalyzed Reaction of Indolyl Methylenemalononitriles and Enals for Enantioselective Access to Tetrahydrocarbazoles

PP 42 Luke WHITAKER Department of Pure & Applied Chemistry, University of Strathclyde

Reductive Etherification

12

PP 43 Qian CHENG


Linkage Engineering of Covalent-Organic Frameworks to Achieve Covalently Bridged Inorganic/Organic Hybrids for Efficient Photocatalysis

PP 44 Guoyong LUO Division of Chemistry & Biological Chemistry, Nanyang Technological University

Access to Cyclic β-Amino Acids by Amine-Catalyzed Enantioselective Addition of the γ-Carbon Atoms of α,β-Unsaturated Imines to Enals

PP 45 Sota AKIYAMA Division of Applied Chemistry, Hokkaido University

Copper(I)-Catalyzed Enantioselective Synthesis of Fluorine-Containing Allylic Boronates and their Transformations

PP 46 Anivind Kaur BINDRA Division of Chemistry & Biological Chemistry, Nanyang Technological University

Semi-Conducting Polymer-Inorganic Hybrid Self-Assembled Nanoparticles for Phototherapy and Photoacoustic Imaging

PP 47 Dipendu MANDAL Department of Chemistry, National University of Singapore

Selective Single Fluoride Nucleophilic Substitution in Trifluoromethyl Arenes

PP 48 Jun XU Division of Chemistry & Biological Chemistry, Nanyang Technological University

Base-Assisted Reductive Coupling Construction of Vicinal All-Carbon Quaternary Stereocenters：Application to the Synthesis of Dimer Hexahydropyrroloindole Alkaloids

PP 49 Lars GNAEGI Department of Chemistry and Biochemistry, University of Bern

Stereochemical Aspects of the Triflate Mediated Intramolecular Schmidt Reaction

PP 50 Deblin JANA Division of Chemistry & Biological Chemistry, Nanyang Technological University

Biodegradable Biocatalyst for Synergistic Tumor Starvation and Low-Temperature Photothermal Therapy

PP 51 Chenfei LIU Department of Chemistry, National University of Singapore

Synthesis of Secondary and Tertiary Fluorides by Catalytic Decarboxylative Cross-Coupling

PP 52 Wenchao CHEN Division of Chemistry & Biological Chemistry, Nanyang Technological University

Enantioselective Reductive Alkylation of Chromones and Coumarins via Bisguanidinium Silicate Ion-Pairing Catalysis

PP 53 Yu OZAWA Division of Applied Chemistry, Hokkaido University

Reactivity and Enantioselectivity Enhancement of Direct Enantioconvergent Borylation by Gear-meshing-like Effect in Phosphorus Ligand

PP 54 Wei Liang TEO Division of Chemistry & Biological Chemistry, Nanyang Technological University

Facile Solvent- and HF-Free Synthesis of Flexible MIL-88B (Cr)

PP 55 Xin ZHANG Division of Chemistry & Biological Chemistry, Nanyang Technological University

An Enantioconvergent Halogenophilic Nucleophilic Substitution (SN2X) Reaction

PP 56 Toshimasa OKITA Department of Applied Chemistry, Waseda University

Pd-Catalyzed Intramolecular C–H Arylation of Aromatic Esters and Nitroarenes

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PP 57 Derek Yiren ONG


Synthesis of α-tertiary Alkyl Amines by Reductive Functionalization of Carboxamides

PP 58 Haonan ZHAO Department of Chemistry, National University of Singapore

Remote Borylation of Unactivated C-H Bonds Enabled by Synergistic Hydrometallation and Borometallation

PP 59 Mrinmoy DAS Division of Chemistry & Biological Chemistry, Nanyang Technological University

Metal-Free Visible Light Photoredox Enables Generation of Carbyne Equivalents via Phosphonium Ylide C-H Activation

PP 60 Nishanth Rao RAMDAS Department of Chemistry, Vellore Institute of Technology

Utility of 2-Amino Pyridine: A Hit to Lead Identification Study

PP 61 Bin WANG Division of Chemistry & Biological Chemistry, Nanyang Technological University

Stereoselective Semi-Reduction of Alkynes by NaH-MgI2

PP 62 Jianming YAN Department of Chemistry, National University of Singapore

Smiles Rearrangement Promoted by Neutral Eosin Y as the Direct Hydrogen Atom Transfer Photocatalyst

PP 63 Manikantha MARASWAMI Division of Chemistry & Biological Chemistry, Nanyang Technological University

Rh(III)-Catalyzed Macrolide Synthesis through Alkenyl sp2 C-H Activation

PP 64 Hayate SAITO Department of Chemistry, Kyoto University

Seven-Membered Dialkoxysilyl Group Activatable under Specific Conditions

PP 65 Dhika Aditya GANDAMANA Division of Chemistry & Biological Chemistry, Nanyang Technological University

Diastereoselective Intramolecular Hydride Transfer Under Brønsted Acid Catalysis

PP 66 Jeffrey GOH Division of Chemistry & Biological Chemistry, Nanyang Technological University

Green Synthetic Pathway of Vinyl Sulfones via a Sulfa-Michael Reaction of Electron-Deficient Allenes and Sulfinic Acids

PP 67 Nilmadhab ROY Department of Chemistry, Vellore Institute of Technology

Development of Novel Ruthenium (II) and Iridium (III) Based Monometallic, Bimetallic and Heterobimetallic Scaffolds for Theranostic Application in Treatment of Cancer

PP 68 Hirohito HAYASHI Division of Chemistry & Biological Chemistry, Nanyang Technological University

Photo-Induced Biaryl Cross-Coupling

PP 69 Mu WANG Department of Chemistry, National University of Singapore

Towards Automation: End-to-End Synthesis of APIs

PP 70 Felix LEON Division of Chemistry & Biological Chemistry, Nanyang Technological University

Synthesis of New Phosphazane Based N-heterocyclic Carbenes

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PP 71 Masaki YOSHITAKE

Department of Chemistry, Kyushu University

Highly Enantioselective N-Acyl Nitrene Transfer using Dioxazolone: Synthesis of Chiral Sulfimides

PP 72 Roshayed Ali LASKAR Division of Chemistry & Biological Chemistry, Nanyang Technological University

Cobalt-Catalyzed, N–H Imine Directed Arene C–H Benzylation with Benzyl Phosphates

PP 73 Qiong LIU Department of Chemistry, National University of Singapore

Polymeric Carbon Nitride Nanosheets with Vacancies as Efficient Photoredox Catalysts

PP 74 Gavin Gao Xiao HUM Division of Chemistry & Biological Chemistry, Nanyang Technological University

Mechanochemistry: Towards the Synthesis of Earth-Abundant Metal Complexes

PP 75 How Chee ONG Division of Chemistry & Biological Chemistry, Nanyang Technological University

Mitochondria-Targeting Phosphonium Dications Enabled by Aryl Methylation

PP 76 Kausani GHATAK Department of Chemistry, National University of Singapore

Stereoelectronics of Metal Complexes with Bidentate diNHC Ligands

PP 77 Gabor BATI Division of Chemistry & Biological Chemistry, Nanyang Technological University

Fusing the Non-Fusible: Saddle-Shaped Corannulenes

PP 78 David KATONA Division of Chemistry & Biological Chemistry, Nanyang Technological University

A Catalytic Approach to Generating Chiral P,N-Chelate Complexes

PP 79 Shina QUEK Division of Chemistry & Biological Chemistry, Nanyang Technological University

Cocrystallization of Cis-Oxidized Cyclodiphosph(V/V)azanes with Nerve Gas Mimic Molecules

PP 80 Dongdong WANG Division of Chemistry & Biological Chemistry, Nanyang Technological University

Self-Assembled Single-Atom Nanozyme for Enhanced Photodynamic Therapy of Tumor

Poster Session Timings

15 January (Wed), 1845 - 2100 hrs | Poster Judging & Networking Dinner

16 January (Thur), 1220 - 1400 hrs | Lunch & Poster Session

17 January (Fri), 1300 - 1400 hrs | Lunch & Poster Session

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Our Exhibitors Booth Number

Royal Society of Chemistry B1

Wiley-VCH B2

Waters Pacific Pte Ltd B3

Shimadzu (Asia Pacific) Pte Ltd B4

Agilent Technologies Singapore (International) Pte Ltd B5

Tokyo Chemical Industry Co., Ltd B6

ITS Science and Medical Pte Ltd B7

World Scientific Publishing Co Pte Ltd B8

Exhibition Timings

15 January (Wednesday) Opens 13:00 onwards

16 January (Thursday) Opens 10:25 onwards

17 January (Friday) Opens 10:45 onwards

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Our Poster Awards Sponsors

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Our Conference Sponsors Waters Pacific Pte Ltd Waters Corporation, the world's leading specialty measurement company, has pioneered chromatography, mass spectrometry, and thermal analysis innovations serving the life, materials, and food sciences for more than 60 years. Through its Waters and TA branded portfolio, Waters Corporation equips polymer scientists with solutions that enable separation, purification, MS based technologies, and material property analysis including Thermal Analysis, Rheology, Calorimetry, and Mechanical Testing instruments.

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NOTES

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NOTES

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Special Acknowledgement to our Sponsors,

Exhibitors and Supporting Organisations

American Chemical Society American Chemical Society

Royal Society of Chemistry Royal Society of Chemistry

nanyang research conference synthetic chemistry and...

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