著者

Suguru Yoshida Takamitsu Hosoya

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.44, no.11, pp.1450-1460, 2015-11-05 (Released:2015-11-05)

参考文献数

159

被引用文献数

173 1

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Recent developments in aryne chemistry are reviewed with a particular focus on synthetic methods. This includes an overview of the precursors of arynes and their activators; the generation of arynes with functional groups and their ensuing reactivities; and the novel transformations achieved via aryne intermediates. These newly developed methods have enabled the synthesis of a variety of previously inaccessible aromatic compounds, allowing the construction of a diversity-enriched chemical library that will further facilitate future drug discoveries.

著者

Satoshi Inomata Hiroshi Tanimoto Hiroyuki Yamada

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.43, no.4, pp.538-540, 2014-04-05 (Released:2014-04-05)

参考文献数

21

被引用文献数

19 2

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The detection properties of alkanes by proton-transfer-reaction plus switchable reagent ion mass spectrometry (PTR + SRI-MS) were investigated. Alkanes (RH) were commonly detected as R+ by PTR + SRI-MS using NO+ as the reagent ion, and detection sensitivities were comparable to those of aromatics observed by H3O+ ionization. It can be concluded that sensitive online measurement of multiple alkanes is possible by PTR + SRI-MS using NO+ as the reagent ion.

著者

Nakamura Ikusei Aimoto Kohjiroh Fujimoto Kaoru Tominaga Hiro-o

出版者

The Chemical Society of Japan

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

no.3, pp.437-440, 1988

被引用文献数

2 2

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A nickel supported on active carbon catalyst was found to exhibit an excellent activity for transfer hydrocracking of diphenylpropane with tetralin at 400 °C. It is demonstrated that the catalytic transfer hydrogenation is effected by the reverse spillover of hydrogen atom over the active carbon.

著者

KAWASAKI Tsuneomi UCHIDA Mizuki KAIMORI Yoshiyasu SASAGAWA Taisuke MATSUMOTO Arimasa SOAI Kenso

出版者

The Chemical Society of Japan

雑誌

Chemistry letters (ISSN:03667022)

巻号頁・発行日

vol.42, no.7, pp.711-713, 2013-07-05

参考文献数

44

被引用文献数

22

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5-Pyrimidyl alkanol with an enantiomeric excess of up to >99.5% was formed using chiral crystals of achiral tris(2-hydroxyethyl) 1,3,5-benzenetricarboxylate as a chiral initiator. In the enantioselective addition of diisopropylzinc to pyrimidine-5-carbaldehyde, the helicity of the molecular arrangement of achiral tricarboxylate in the crystalline state could be successfully used as a source of chirality to afford enantioenriched alkanol in conjunction with asymmetric autocatalysis with amplification of enantiomeric excess.

著者

Hikaru Sugita Yasuo Hatanaka Tamejiro Hiyama

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.25, no.5, pp.379-380, 1996 (Released:2006-03-01)

参考文献数

13

被引用文献数

13

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Alkynylation of chlorosilanes with copper(I) alkynides takes place smoothly in the presence of triphenylphosphine, N, N, N′, N′-tetramethylethylenediamine, or zinc powder to give a variety of alkynylsilanes in good yields.

著者

Akira Takahashi Azusa Yamaguchi Yoshimune Nonomura

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

pp.140778, (Released:2014-09-09)

被引用文献数

6

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We evaluated the frictional force between two finger models that mimic properties of fingertips. Friction dynamics were drastically changed with the presence of fingerprints and variations in sliding speed and vertical force. For example, a periodic variation of the frictional force was observed under slow sliding conditions between finger models with fingerprint-like rough surfaces.

著者

Keitaro Kuramitsu Toshio Nomura Shyuhei Nomura Takashi Maeno Yoshimune Nonomura

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.42, no.3, pp.284-285, 2013-03-05 (Released:2013-02-23)

参考文献数

13

被引用文献数

35

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We developed a friction evaluation system with a human finger model. The surface of the model was covered with imitation fingerprints. When a polypropylene surface was rubbed against the finger model, the friction profile varied with the sliding velocity and vertical force.

著者

Sobi Asako Laurean Ilies Pritha Verma Saki Ichikawa Eiichi Nakamura

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

pp.131205, (Released:2014-02-04)

被引用文献数

3

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A theoretical study on a tripodal alkoxydipshophine ligand (POP), which accelerates the nickel-catalyzed monosubstitution of a polyfluoroarene with an organozinc reagent, revealed that the alkoxy group and the diphosphine act independently to facilitate cooperation of a Lewis acid and a transition metal.

著者

Eiji Yashima Mitsuru Akashi Noriyuki Miyauchi

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.20, no.6, pp.1017-1020, 1991 (Released:2006-05-12)

参考文献数

24

被引用文献数

53

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Chiral bis(1,10-phenanthroline) with Tröger’s base skeleton (1) was synthesized from 5-amino-1,10-phenanthroline with formaldehyde and HCl. Racemic 1 could interact with DNA from CD spectroscopy and could cleave DNA when it was complexed with copper(I).

著者

Naoki Nakagawa Yoshimune Nonomura

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.40, no.8, pp.818-819, 2011-08-05 (Released:2011-07-02)

参考文献数

28

被引用文献数

5

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We observed the drying process of Pickering emulsions with a microscope. In the case of water-in-oil (w/o) emulsions stabilized by common surfactants, the emulsion droplets shrunk while maintaining their spherical shapes. On the other hand, in the case of w/o emulsions stabilized by solid particles, wrinkles occurred and expanded on the droplet surfaces. The colorant dissolved in the water phase remained in a wide area after drying.

著者

Yoshimune Nonomura Masahiro Yamane

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.37, no.4, pp.406-407, 2008-04-05 (Released:2008-03-01)

参考文献数

12

被引用文献数

1

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We found self-motion and accelerated dissolution of a fatty acid particle at the oil–water interface. The dissolution time at the interface was 15–20 times shorter than that in the oil phase. The driving force of the self-motion and the accelerated dissolution is the Marangoni flow induced by the spatial heterogeneity of a fatty acid layer at the oil–water interface.

著者

Toshiaki Taira Yuji Suzaki Kohtaro Osakada

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

pp.130345, (Released:2013-06-06)

被引用文献数

12

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Addition of α-cyclodextrin (α-CD) to amphiphilic Pd(II) complex with bipyridinium ligands forms the metal-containing rotaxane, and its aqueous solution undergoes sol-gel transition depending on temperature and concentration.

著者

Hiromitsu Haba Daiya Kaji Yukiko Komori Yuki Kudou Kouji Morimoto Kosuke Morita Kazuhiro Ooe Kazutaka Ozeki Nozomi Sato Atsushi Shinohara Akira Yoneda

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.38, no.5, pp.426-427, 2009 (Released:2009-03-28)

被引用文献数

3 18

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An isotope of element 104, rutherfordium (261Rf), produced in the 248Cm(18O, 5n)261Rf reaction was successfully extracted to a chemistry laboratory using a gas-jet transport system coupled to the RIKEN gas-filled recoil ion separator GARIS. The present system is a promising interface to explore new frontiers in superheavy element chemistry.

著者

Binod Babu Shrestha Sangita Karanjit Gautam Panda Shuhei Higashibayashi Hidehiro Sakurai

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.42, no.4, pp.386-388, 2013-04-05 (Released:2013-04-05)

参考文献数

30

被引用文献数

34

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Electrophilic substitution reactions of sumanene were studied. Mono-, di-, and trisubstituted sumanenes were selectively prepared with the separation of all regioisomers. The regioselectivity was predicted well by the HOMO density values determined by DFT calculations.

著者

Takayuki Ishida Chihiro Tsukano Yoshiji Takemoto

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.41, no.1, pp.44-46, 2012-01-05 (Released:2011-12-24)

参考文献数

43

被引用文献数

16

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A method of synthesizing 2-iminoindolines using samarium diiodide (SmI2) is reported. In the presence of tert-butyl alcohol, treatment of carbodiimides bearing α,β-unsaturated carbonyl moieties with a stoichiometric amount of SmI2 afforded 2-iminoindolines in moderate to high yields. The products were isolated after Boc protection of the amidine moieties. This reaction proved to be applicable to lactams and acyclic/cyclic esters as substrates.

著者

Junji Kobayashi Yuya Domoto Takayuki Kawashima

出版者

The Chemical Society of Japan

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.39, no.2, pp.134-135, 2010-02-05 (Released:2010-01-23)

参考文献数

27

被引用文献数

10

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A fluorescent host molecule bearing a bicyclic triarylphosphate framework was synthesized. Its inclusion behavior to C60 was revealed by fluorescent titration. Cocrystallization of the host and C60 resulted in the formation of an inclusion complex in the crystalline state.

著者

Yuki Yamasaki Takaharu Hirayama Koichiro Oshima Seijiro Matsubara

出版者

(社)日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.33, no.7, pp.864-865, 2004 (Released:2004-06-14)

被引用文献数

10

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Optically active secondary alkyl halides and sulfonates were treated with alkaline hydrothermal water at 250 °C in sealed vessel. The hydrolysis mostly proceeded with inversion of stereochemistry.

著者

Li Xi Xia Jinfeng Li Xin Shen Yibo Hu Tianxi Ye Danwang Jiang Danyu Li Qiang

出版者

公益社団法人 日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.47, no.6, pp.797-799, 2018

被引用文献数

2

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<p>The stickiness of acacia gum was used to assist in the ball milling of graphite in aqueous media. Graphite is successfully exfoliated through a "sticky tape" mechanism, to give a 2.06 mg mL⁻¹ aqueous dispersion of graphene. PEG₆₀₀₀ doped with 0.4 wt% of as-prepared graphene nanosheets (GN) exhibited obviously growing enthalpies and increasing thermal conductivity by 260% over pure PEG₆₀₀₀.</p>

著者

Yasuda Shuhei Yokoi Toshiyuki Kunitake Yusuke Osuga Ryota Nakamura Kengo Matsumoto Takeshi Sago Keita Kondo Junko N. Yabushita Mizuho Muramatsu Atsushi

出版者

公益社団法人 日本化学会

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.51, no.1, pp.46-49, 2022

被引用文献数

2

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<p>Supported nickel CHA-type zeolites with different framework compositions including borosilicate, gallosilicate and aluminosilicate were synthesized. The effect of heteroatoms in the framework on the state of the Ni species introduced was investigated. The size and dispersibility of the Ni species differed greatly depending on the heteroatom in the zeolite framework, and the use of the aluminosilicate-type framework led to the formation of a highly dispersed and nano-sized Ni species. Thus, prepared Supported Ni CHA-type aluminosilicate exhibited the highest catalytic performance in oxidative conversion of CH₄.</p>

著者

Anthony J. Arduengo III Thomas P. Bannenberg Daniela Tapu William J. Marshall

出版者

The Chemical Society of Japan

雑誌

Chemistry Letters (ISSN:03667022)

巻号頁・発行日

vol.34, no.7, pp.1010-1011, 2005 (Released:2005-06-11)

参考文献数

26

被引用文献数

15

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The synthesis of bis[(3a,4,5,6,6a-η)-1,3,4,5,6-pentamethylcyclopenta[d]imidazo-2-thionoyl]iron(II) is reported. Structural determination of the unusual hetero-substituted metallocene by X-ray crystallographic analysis is described. Preliminary electrochemical studies reveal that oxidation and reduction potentials for the subject ferrocene lie midway between those of ferrocene and decamethylferrocene.