6/8/2015  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.

Chemistry Chat

- Focusing on the Elements - Chemistry between Carbon and Other Elements


Kentaro Sato

Numerous research articles are published every day in the field of organic chemistry. Come to think of it, in the genre that deals with only one element - carbon, considering such high pace of publication, one might wonder how researchers manage not to run out of new ideas. Apparently, the possibility of carbon chemistry has a large space left to be explored after hundreds of years of history, and the horizon even continues to expand.

In the CAS database, the largest chemical database in the world, close to 70 million compounds are registered. Of those, 80 percents are carbon-based organic compounds. Within the periodic table consisting of more than 100 elements, carbon has a special status which may be called the “king of all elements.”

Reagent for Perovskite Solar Cells: Purified Lead(II) Iodide



A study on a perovskite solar cell recently receives much attention. At a main part of the solar cell, the organic-inorganic perovskite semiconductor (MeNH3PbI3) can functionalize as an absorption layer. Use of a purified lead(II) iodide is a key to fabricate efficient perovskite solar cell devices.

This material was produced by collaboration with Prof. Atsushi Wakamiya at Institute for Chemical research, Kyoto University
Advantages
- Lead(II) iodide with extremely low water quantity for preparing a concentrated clear DMF solution.
- Fabricates efficient perovskite solar cell devices (PCE > 10%) with high reproducibility.

TCI will introduce more detail at The 5th Sungkyun International Solar Forum 2015 (SISF 2015)Korea on June 24-26.

[Pamphlet] - Reagents for Conducting Polymer Research

This brochure contains many essential reagents with a focus on thiophene derivatives for conducting polymer research.
Reagents for Conducting Polymer Research
•Lists a wide variety of thiophenes with different types of substituents.
•Lists pyrroles, carbazoles, dichlorosilanes, and fluorenes.

Synthetic Organic Chemistry

Research Article

Oxidative Umpolung α‑Alkylation of Ketones

Szpilman et al. have reported [hydroxy(tosyloxy)iodo]benzene mediated the α-alkylative umpolung reaction of carbonyl compounds with dialkylzinc reagents. This reaction can be applied to a wide range of ketones, including 1,3-dicarbonyl compounds, leading to the corresponding α-alkylated carbonyl products in up to 93% yield. They have proposed a reaction mechanism from experimental and computational analysis which reaction proceeds through the umpolunged ketone enolate to α-electrophile by the action of the hypervalent iodine oxidant and subsequent addition of an alkyl nucleophile.
P1015

References

O. S. Shneider, E. Pisarevsky, P. Fristrup, A. M. Szpilman, Org. Lett. 2015, 17, 282.

Product Highlight

An Air- and Moisture- stable Electrophilic Fluorinating Reagent

1-Fluoro-3,3-dimethyl-1,2-benziodoxole (1) is a hypervalent iodine derivative developed by Stuart et al.1) This compound is stable to air and moisture and used as an electrophilic fluorinating reagent for a α-monofluorination of β-ketoesters in the presence of triethylamine trihydrofluoride. In this reaction, a difluorination reaction occurs by increasing the amounts of 1 with heating at 60 °C.
On the other hand, Szabó et al. have reported a difluorination reaction of 1 with styrene derivatives.2) They suggest that the reaction proceeds through the formation of a phenonium ion intermediate based on a deuterium-isotope-labelling experiment.
F0957

References

1) G. C. Geary, E. G. Hope, K. Singh, A. M. Stuart, Chem. Commun. 2013, 49, 9263.
2) N. O. Ilchenko, B. O. A. Tasch, K. J. Szabó, Angew. Chem. Int. Ed. 2014, 53, 12897.

New Products

Bioscience

New Products

HPLC Mixed-Mode columns (ODS + Ion-Exchange) “TCI Dual series”

• Separation of Organic Acids by TCI Dual ODS-AX20 (Anion-Exchange column)
TCI Dual ODS-AX20

[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

TCI Catalogs & Product Brochures

websitetip
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

The 5th Sungkyun International Solar Forum 2015 (SISF 2015)

600th Anniversary Hall, Sungkyunkwan University, Seoul, Korea
June 24-26, 2015
» TCI exhibition information      » Event details

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

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

Other Information

TCI Facebook Page

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