Nobuhiro Takano | Researchain

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Archive | 1998

Epoxidation of 1,4-Naphthoquinones by Electrochemically Generated Hypohalogen Acids

Nobuhiro Takano; Manabu Ogata

Epoxidation using electrochemically generated hypohalogen acids in organic solvent-water-halide salt systems was investigated. In the CH3CN-H2O-NaI system, the epoxidation of 1,4-naphthoquinones provided the corresponding epoxides in good yields.

Chemical Communications | 2010

A novel chiral oxazolidine organocatalyst for the synthesis of an oseltamivir intermediate using a highly enantioselective Diels-Alder reaction of 1,2-dihydropyridine.

Hiroto Nakano; Kenichi Osone; Mitsuhiro Takeshita; Eunsang Kwon; Chigusa Seki; Haruo Matsuyama; Nobuhiro Takano; Yoshihito Kohari

Tetrahedron Letters | 2011

A highly enantioselective Diels–Alder reaction of 1,2-dihydropyridine using a simple β-amino alcohol organocatalyst for a practical synthetic methodology of oseltamivir intermediate

Chonticha Suttibut; Yoshihito Kohari; Ko Igarashi; Hiroto Nakano; Masafumi Hirama; Chigusa Seki; Haruo Matsuyama; Koji Uwai; Nobuhiro Takano; Yuko Okuyama; Kenichi Osone; Mitsuhiro Takeshita; Eunsang Kwon

Thin Solid Films | 2004

Gas sensors based on poly-3-hexylthiophene thin-film transistors

Hisashi Fukuda; Masahumi Ise; Toshimitsu Kogure; Nobuhiro Takano

Sensors and Actuators B-chemical | 2005

Gas sensing properties of poly-3-hexylthiophene thin film transistors

Hisashi Fukuda; Yasuaki Yamagishi; Masafumi Ise; Nobuhiro Takano

Analytica Chimica Acta | 1999

Solvent extraction of Pb(II) from acid medium with zinc hexamamethylenedithiocarbamate followed by back-extraction and subsequent determination by FAAS

Anthony R.K. Dapaah; Nobuhiro Takano; Akimi Ayame

Tetrahedron | 2012

Asymmetric synthesis of isoquinuclidines by Diels–Alder reaction of 1,2-dihydropyridine utilizing a chiral Lewis acid catalyst

Chigusa Seki; Masafumi Hirama; N. D. M. Romauli Hutabarat; Junko Takada; Chonticha Suttibut; Hideto Takahashi; Takuya Takaguchi; Yoshihito Kohari; Hiroto Nakano; Koji Uwai; Nobuhiro Takano; Mitsukuni Yasui; Yuko Okuyama; Mitsuhiro Takeshita; Haruo Matsuyama

Heterocycles | 2012

CHIRAL PRIMARY AMINO SILYL ETHER ORGANOCATALYST FOR THE ENANTIOSELECTIVE DIELS-ALDER REACTION OF 1,2-DIHYDROPYRIDINES WITH AlDEHYDES

Hiroto Nakano; Yuki Sakuta; Yoshihito Kohari; N. D. M. Romauli Hutabarat; Koji Uwai; Eunsang Kwon; Yuko Okuyama; Chigusa Seki; Haruo Matsuyama; Nobuhiro Takano; Michio Tokiwa; Mitsuhiro Takeshita

Heterocycles | 2012

Highly Enantioselective Synthesis of Isoquinuclidine by Diels-Alder Reaction of 1,2-Dihydropyridine Utilizing Chiral Bisoxazoline-Cu(II) Complex

Haruo Matsuyama; Chigusa Seki; Takashi Shimizu; Masafumi Hirama; Hiroto Nakano; Koji Uwai; Nobuhiro Takano; N. D. M. Romauli Hutabarat; Yoshihito Kohari; Eunsang Kwon

Chemistry Letters | 1996