7/31/2017  TCI NEWS

We distribute TCI NEWS every four weeks, to our valued customers using research chemicals and chromatography products. We hope that you find this helpful for your research.

[Brochure] Liquid Crystal Materials

This contains compounds widely used in research of liquid crystals. The list is divided for each kind of liquid crystalline phase. You can find a proper liquid crystal material according to your purposes of usage.
F2036E
-Liquid crystalline phase materials are introduced by each kind clearly.
-This brochure is abundant in raw materials of liquid crystal materials and/or chiral liquid crystal materials.

Synthetic Organic Chemistry

Research Article

High Throughput Sequence-controlled Oligosiloxane Synthesis

Matsumoto and Shimada et al. have reported the high throughput oligosiloxane synthesis from some silanes as starting materials. According to their report, the coupling of trimethylsilyl acetate with dialkylsilanes in the presence of chlorobis(cyclooctene)iridium(I) dimer catalyst gives the desired disilyl acetals (1) in good yield. In this reaction, a rearrangement of the siloxy group of 1 proceeds in the presence of the tris(pentafluorophenyl)borane (2) catalyst and corresponding disiloxanes (3) are given effectively. 2 acts as a Si-H bond activator which enables the oligosiloxane synthesis to proceed with the coupling of third component organosilanes after the first two silane-component coupling, thus giving the related oligosilanes with five-silicon-atoms. Generally, sequential-controlled siloxane syntheses have been difficult. This synthetic method, however, is expected to be used for new oligosiloxane syntheses.
C2985, T2313

References

Product Highlight

DABSO as a SO2 Source Usable for Direct Sulfonylative-Suzuki Coupling of Aryl Boronic Acids

Bis(sulfur dioxide)-1,4-diazabicyclo[2.2.2]octane adduct (DABSO) has been widely used as a SO2 source since it was first applied to synthesis of sulfonyl compounds by Willis et al. in 2011.1) For example, Willis et al. have performed the (CH3CN)4CuBF4 complex catalyzed direct sulfonylative-Suzuki coupling of aryl boronic acids with electrophiles using DABSO as a SO2 source. In this reaction, nucleophilic aryl sulfinates are formed as a synthetic intermediate, and further react with various electrophiles like epoxides, in situ prepared chloroamines and an active fluorinating reagent (NFSI) to afford the related sulfones, sulfonamides and sulfonylfluorides.2) DABSO can be used as a SO2 surrogate reagent because gaseous SO2 is highly toxic, so it is expected to be further applied to organic syntheses.
B3960,T2666,O0494,F033

References

New Products

Life Science

New Products

HPLC Columns “TCI Chiral RP series”

Chiral separation of Flavanone by TCI Chiral MB-S RP

-Special REVERSED PHASE ONLY
-A unique stationary phase
 Polymaleimide (helical polymer) bearing chiral side groups coated on silica gel.
-Suitable for separation of carbonyl compounds and the others
 ex. Ketones, Esters, Carboxylic acids, N-Protected Amino acids, Alcohols etc.
-High column load capacity
-Superior column longevity [Maximum pressure: 2900 psi (20 MPa)]
-Affordable price
Kaseisorb LC NH2-60-5

[New Edition] TCIMAIL Quarterly Magazine – No. 173

TCIMAIL contains technical papers contributed by leading professors and scientists. We also introduce our new reagents in the fields of Synthetic Organic Chemistry, Materials Chemistry, Bioscience and Analytical Science. Examples of application and use are explained in an easy way, using various schemes and charts.

Research Article
- Aryl(2,4,6-trimethoxyphenyl)iodonium Salts as Reagents for Metal-Free Arylation of Carbon and Heteroatom Nucleophiles
David R. Stuart
Assistant Professor, Department of Chemistry, Portland State University, United States

Chemistry Chat – Focusing on the Elements –
Naming New Elements
Kentaro Sato

Applications
- High Mobility Organic Semiconductor: 2,6-Diphenylanthracene
- A Novel Hole Transport Material for Perovskite Solar Cells: V886
- Photoremovable DEACM Protecting Group
- Tyrosine Kinase Inhibitor: Methyl 2,5-Dihydroxycinnamate
- Tyrosine Kinase Inhibitor: Tyrphostin AG1478
- Fluorescent Probe: 5-CFDA

Reagent Guides 8th Edition

In these Reagent Guides, TCI products have been classified according to research fields, reaction types, applications and basic structures. Please click here to contact TCI local distributors or TCI for a Free Copy!
Synthetic Organic Chemistry & Materials Chemistry

Classification examples:

Synthetic Organic Chemistry
Asymmetric Organocatalysts / Cross-coupling Reaction Using Transition Metal Catalysts / Condensation & Active Esterification

Materials Chemistry
Solar Cell Research Reagents / OLED / Photochromic Compounds
Bioscience & Analytical Science

Classification examples:

Bioscience
Nucleosides / Amino Acids / Sugars / Lipids / Terpenes / Steroids / Antibodies

Analytical Science
GC Derivatizing Reagents / HPLC Labeling Reagents / HPLC Columns / Derivatization Reagents for MS

TCI has a wide variety of catalogs and product brochures. Most of them are available in PDF format and can be downloaded from our website.

» Other Catalogs & Product Brochures

TCI Website Tips

Reagent Guide - Online Version Available on TCI Website

TCI Reagent Guides, product catalogs by category, are very useful as reference for finding reagents. Do you know Reagent Guides are also available as online version on our website?
You click “Products” tab, then you can go around our product information by category easily.

Additionally, benefits of online catalogs include;
-New products that aren't included in the paper version are added every day.
-Product categories that aren’t included in the paper version are available, and new categories are uploaded timely.

Please click the following product categories, and find your chemicals!

Exhibitions/Meetings/Shows

254th ACS National Meeting & Exposition

Washington, DC Convention Center, Halls B/C
Sunday: 6 – 8:30 PM
Monday and Tuesday: 9 AM – 5 PM
Booth #1308
Aug 20-24, 2017
» TCI exhibition information      » Event details

Organic Chemistry Division of Korea Chemical Society:Workshop

STX Resort, Mungyeong, Korea
Aug 21 - 22, 2017
» TCI exhibition information      » Event details

GLYCO 24 (24th International Symposium on Glycoconjugates)

ICC Jeju, Jeju Island, Korea
Aug 27 - Sep 1, 2017
» TCI exhibition information      » Event details

Korea Society of Organic Synthesis:Workshop

Sungkyunkwan University, Suwon, Korea
Sep 21 - 22, 2017
» TCI exhibition information      » Event details

The Polymer Society of Korea 2017 Fall Meeting

International Convention Center Jeju, Korea
Oct 11 - 13, 2017
» TCI exhibition information      » Event details

120th KCS General Meeting & Exposition

Kimdaejung Convention Center, Gwangju, Korea
Oct 18 - 20, 2017
» TCI exhibition information      » Event details

Other Information

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