5/11/2015  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.

[Pamphlet] - Chiral Building Blocks

This brochure contains more than 900 chiral building blocks and related compounds, and makes a great addition to your reagent library!
Chiral Building Blocks
• Carboxylic acids, esters, amides and isocyanates are listed by chemical structure
• Convenient for finding total synthesis building blocks and designing asymmetric catalysts

[New Edition] TCIMail Quarterly Magazine – No. 165

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 to understand way, using various schemes and charts.
Chemistry Chat
- Focusing on the Elements - Compounds Composed of Two Elements (2)
Kentaro Sato

Applications
- Hybrid-type Oxidizing Catalyst Using Peracetic Acid as a Co-oxidizing Agent
- A New 3,3,3-trifluoropropenylation Reagent, Ikeda–Omote Reagent
- Redox Coenzymes
- JAK Inhibitor
- Bone Resorption Inhibitor
- Detergent for Biochemical Research

Synthetic Organic Chemistry

Research Article

Straightforward Aryne Polymerization: Synthesis of Poly(ortho -arylene)s

  Uchiyama et al. have reported the first straightforward aryne polymerization that connects aromatic rings at their ortho-positions to give poly(ortho -arylene)s of up to ca. 100-mer size. They use 4,5-dimethoxy-2-(trimethylsilyl)phenyl trifluoromethanesulfonate as an aryne precursor and CuCN as a crucial initiator in the polymerization. In this report, they demonstrate that the polymerization proceeds in chain-growth fashion, not through step growth because the molecular weight of the poly(ortho -arylene)s are modulated by the initiator amount. In addition, they presume the reaction pathway of this polymerization by means of density functional theory (DFT) calculations.
D3883

References

Y. Mizukoshi, K. Mikami, M. Uchiyama, J. Am. Chem. Soc. 2015, 137, 74.

Product Highlight

A Silylborane Derivative Usable for Transition-Metal-Free Borylation

  2-(Dimethylphenylsilyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (1) is a silylborane and it reacts with various aryl, alkenyl and alkyl bromides under the influence of potassium methoxide to afford the corresponding borates. In this reaction, various aryl bromides with a functional group such as a chloro, fluoro, ester or amide group can react with 1 and the bromo group is selectively substituted for the (pinacolato)boryl group. This reaction is also applicable to the substances having an allyl group because it has no need for any palladium catalyst which may remove allyl groups. Furthermore, in a case using very bulky alkyl groups such as 2, the reaction proceeds and the related boryl group substituted product is given in good yield even though it is generally difficult to introduce by conventional synthetic methods.
  This reaction is a transition-metal-free reaction and environmentally benign. The given borates can be directly used for the Suzuki-Miyaura cross-coupling reaction.
D4357

References

E. Yamamoto, K. Izumi, Y. Horita, H. Ito, J. Am. Chem. Soc. 2012, 134, 19997.

New Products

Bioscience

New Products

Chromatography -HPLC Chiral columns for reversed phase “TCI Chiral RP series”

•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
TCI Chiral RP series

TCI Catalogs & Product Brochures

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TCI has a wide variety of specific catalogs and product brochures. Most of them are available in PDF format and can be downloaded from our website.
Please click the following links to pick up the catalogs and brochures you are interested in:

TCI Website Tips

Reagent Guide Online –Product Information Page in 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 in our website?
You click “Products” tab, then you can go around our product information by category easily.

Additionally, there are many online version specific benefits;
-New products that aren’t included in Reagent Guide are added every day.
-Product categories that aren’t included in Reagent Guides are available, and new categories are uploaded on a timely basis.

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

Exhibitions/Meetings/Shows

7th Pacific Symposium on Radical Chemistry (PSRC-7)

Nanyang Technological University, Singapore
July 15-18, 2015
» TCI exhibition information      » Event details

Other Information

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