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Dive into the research topics where Takeshi Kajiwara is active.

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Featured researches published by Takeshi Kajiwara.


Catalysis Science & Technology | 2012

Asymmetric catalytic hydrogenation for large scale preparation of optically active 2-(N-benzoylamino)cyclohexanecarboxylic acid derivatives

Takeshi Kajiwara; Takahiro Konishi; Mitsuhisa Yamano

Asymmetric catalytic hydrogenation methodology was applied to the synthesis of 2-[N-(4-difluoromethoxy)benzoylamino]cyclohexanecarboxylic acid derivatives. During the course of optimization, it was found that chiral Ru(II) dicarboxylate complexes worked efficiently with an acid additive, aqueous HBF4. Regarding chiral ligand, DTBM-BINAP showed the best result with full-conversion and the highest stereoselectivity. Practical conditions for the asymmetric hydrogenation were also established suppressing the amount of the catalyst and multi-kilogram scale synthesis was successfully achieved.


Archive | 2003

Fused heterocyclic sulfonylurea compound, herbicide containing the same, and method of controlling weed with the same

Yasushi Tanaka; Yukari Kajiwara; Makoto Noguchi; Takeshi Kajiwara; Takanori Tabuchi


Archive | 1996

Triazole compounds, their production and use

Takafumi Fusaka; Osamu Ujikawa; Takeshi Kajiwara; Yasushi Tanaka


Weed Biology and Management | 2006

Sulfonylurea derivatives with fused heterocycle moiety control sulfonylurea-resistant paddy weeds

Yasushi Tanaka; Yukari Kajiwara; Takeshi Kajiwara; Makoto Noguchi; Naofumi Shimizu; Keizaburo Minami


Journal of Pesticide Science | 2004

Synthesis and Herbicidal Activity of Novel 3-Alkoxycarbonyl-3-aryl-2, 3-dihydro-2-oxo-1H-pyrrole Derivatives

Takafumi Fusaka; Seiji Yamato; Takeshi Kajiwara; Hideo Kamiyama; Shigeyuki Itoh; Yasushi Tanaka


Archive | 2003

Process for producting imidazo[1,2-b]pyridazine derivative

Takanori Tabuchi; Tetsuhiro Yamamoto; Takeshi Kajiwara


Archive | 2012

PRODUCTION METHOD OF OPTICALLY ACTIVE DIHYDROBENZOFURAN DERIVATIVE

Mitsuhisa Yamano; Mitsutaka Goto; Takeshi Kajiwara; Hiroyuki Maeda; Takahiro Konishi; Misayo Sera; Yuichiro Kondo; Seiji Yamasaki


Synlett | 2013

Convenient and Eco-Friendly Method for the Conversion of Benzylic Alcohols into Aldehydes, Ketones, and Carboxylic Acids Using NaOCl without any Additives in 1,2-Dimethoxyethane

Naohiro Fukuda; Takeshi Kajiwara; Tomoaki Katou; Keisuke Majima; Tomomi Ikemoto


Archive | 2010

NEW METHOD FOR PRODUCING IMIDAZO[1,2-b]PYRIDAZINES

Takeshi Kajiwara; Satonori Tabuchi; Tetsuhiro Yamamoto; 哲寛 山本; 武志 梶原; 学典 田渕


Archive | 2005

COMPUESTOS DE SULFONILUREA DE HETEROCICLICO CONDENSADO, HERBICIDA, QUE CONTIENE EL MISMO PARA CONTROLAR MALEZA CON EL MISMO

Yasushi Tanaka; Yukari Kajiwara; Makoto Noguchi; Takeshi Kajiwara; Tabuchi Takanori

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Yasushi Tanaka

Takeda Pharmaceutical Company

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Makoto Noguchi

Takeda Pharmaceutical Company

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Yukari Kajiwara

Takeda Pharmaceutical Company

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Tetsuhiro Yamamoto

Takeda Pharmaceutical Company

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Mitsuhisa Yamano

Takeda Pharmaceutical Company

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Takafumi Fusaka

Takeda Pharmaceutical Company

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Takahiro Konishi

Takeda Pharmaceutical Company

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Hideo Kamiyama

Takeda Pharmaceutical Company

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Hiroyuki Maeda

Takeda Pharmaceutical Company

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