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Original Paper

 
 
 
 

Synthesis of fluorous pyrrolidinium and piperidinium ionic liquids
Mitsunori Honda, Takahiro Iwamoto, Taku Ohnogi, Ko-Ki Kunimoto, Masahito Segi
Tetrahedron Lett., 58 (32), 3191–3193, 2017

 
 
 
 

Stereoselective synthesis of allyl ethers using α,β-unsaturated acylsilanes
Mitsunori Honda, Takehide Takatera, Ryousuke Ui, Ko-Ki Kunimoto, Masahito Segi
Tetrahedron Lett., 58 (9), 864–869, 2017

 
 
 
 

Selective synthesis of caffeoylquinic acids (CQAs) using transesterification of vinyl caffeate
La Ode Kadidae, Akira Usami, Takuma Matsui, Mitsunori Honda, Ko-Ki Kunimoto
Int. J. Appl. Chem., 12(3), 193–207, 2016

 
 
 
 

New route for synthesis of 3- and 5-caffeoylquinic acids (CQAs) via protected quinic acids (QAs)
La Ode Kadidae, Akira Usami, Tomoya Koyama, Mitsunori Honda, Ko-Ki Kunimoto
Eur. J. Chem., 6(4), 367–373, 2015

 
 
 
 

Stereoselective synthesis of 1,2,3-triol derivatives from α,β-unsaturated acylsilanes
Mitsunori Honda, Takayoshi Nakamura, Takumi Sumigawa, Ko-Ki Kunimoto, and Masahito Segi
Heteroatom Chem., 25(6), 565-577, 2014

 
 
 
 

Crystal structure of 4-ethyl-1,3-oxazolidine-2-thione
Hisako Okumura, Soh-ichi Kitoh, Mitsuhiro Suda, Mitsunori Honda and Ko-Ki Kunimoto
Eur. Chem. Bull., 3(10), 1017-1019, 2014

 
 
 
 

Extraction of arbutin and its comparative content in branches, leaves, stems, and fruits of Japanese pear Pyrus pyrifolia cv. Kousui
Chizuru Sasaki, Masaki Ichitani, Ko-Ki Kunimoto, Chikako Asada and Yoshitoshi Nakamura
Biosci. Biotechnol. Biochem., 78(5), 874-877, 2014

 
 
 
 

Molecular structure (monomeric and dimeric) and hydrogen bonds in 5-benzyl 2-thiohydantoin studied by FT-IR and FT-Raman spectroscopy and DFT calculations
Vipin Deval, Amit Kumar, Vineet Gupta, Anamika Sharma, Archana Gupta, Poonam Tandon and Ko-Ki Kunimoto
Spectrochim. Acta A, 132, 15-26, 2014

 
 
 
 

Vibrational spectra and normal coordinate analysis of lithium pyruvate monohydrate and its isotopic compounds
Kazuhiko Hanai, Akio Kuwae, Ko‐Ki Kunimoto and Soh‐Ichi Kitoh
Eur. J. Chem., 5(2), 305-310, 2014

 
 
 
 

Crystal structures of racemic and enantiomeric 5-isopropyl-5-methylhydantoin
Masaki Ichitani, Soh-ichi Kitoh, Keiko Tanaka, Shuhei Fujinami, Mitsuhiro Suda, Mitsunori Honda, and Ko-Ki Kunimoto
Eur. J. Chem., 5(1), 6-10, 2014

 
 
 
 

1-Acetyl-5-(4-fluorophenyl)-2-sulfanyl-ideneimidazolidin-4-one
S. Kitoh, Y. Feng, S. Fujinami, M. Ichitani, M. Honda and K.-K. Kunimoto
Acta Cryst. E, 69, o1699, 2013

 
 
 
 

Synthesis and crystal structure of (S)-5-isopropyl-5-methyl-2-thiohydantoin
Masaki Ichitani, Soh-ichi Kitoh, Keiko Tanaka, Shuhei Fujinami, Mitsuhiro Suda, Mitsunori Honda, Akio Kuwae, Kazuhiko Hanai and Ko-Ki Kunimoto
Eur. J. Chem., 4(4), 350-352, 2013

 
 
 
 

Persimmon tannin gel: formation by autoxidation and caffeine adsorption properties
La Ode Ahmad, Le Hoang My Linh, Mio Akimoto, Yusuke Kaneki, Mitsunori Honda, Mitsuhiro Suda and Ko-Ki Kunimoto
Food Sci. Technol. Res., 19(4), 697-703, 2013

 
 
 
 

5-Isopropyl-5-methyl-2-sulfanylideneimidazolidin-4-one
Masaki Ichitani, Soh-ichi Kitoh, Shuhei Fujinami, Mitsuhiro Suda, Mitsunori Honda and Ko-Ki Kunimoto
Acta Cryst. E, 69, o953, 2013

 
 
 
 

Raman spectra and structures of 1-methyl-4-(4-diethylaminophenylazo)-pyridinium iodide in neutral and acidic aqueous solutions
A. Iwase, A. Ueda, A. Kuwae, K. Hanai, K. Kunimoto
J. Mol. Struct., 1047, 55-60, 2013

 
 
 
 

Crystal structure of 1-methyl-4-(4-diethylamino phenylazo)pyridinium iodide, C16H21N4+・I, C16H21IN4
S. Kitoh, S. Fujinami, A. Iwase, A. Kuwae, K. Hanai, M. Suda, M. Honda, K. Kunimoto
Z. Kristallogr. NCS, 228, 33-34, 2013

 
 
 
 

Experimental (FT-IR, FT-Raman, NMR) and theoretical spectroscopic properties of intermolecular hydrogen bonded 1-acetyl-2-thiohydantoin polymorphs
A. Sharma, V. Gupta, P. Tandon, P. Rawat, S. Maeda, K. Kunimoto
Spectrochim. Acta A, 90, 141-151, 2012

 
 
 
  Formation of carbamates and cross-linking of microbial poly(ε-L-lysine) studied by 13C and 15N solid-state NMR
S. Maeda, S. Oumae, S. Kaneko and K. Kunimoto
Polym. Bull., 67, 745-754, 2012
 
 
 
 

An efficient synthesis of cyclopropyl silyl ketones
Mitsunori Honda, Kenta Nakae, Toshiaki Nishizawa, Mitsuhiro Suda, Ko-Ki Kunimoto, and Masahito Segi
Tetrahedron, 2011, 67, 9500-9508

 
 
 
 

Characterization of microbial poly(ε-L-lysine) and its derivatives by solid-state NMR
S. Maeda, C. Sasaki, and K. Kunimoto
NMR Spectroscopy of Polymers: Innovative NMR Strategies for Complex Macromolecular Systems, in American Chemical Society Symposium Series, 1077, ed. H. N. Cheng, T. Asakura, A. D. English, NMR Spectroscopy of Polymers: Innovative Strategies for Complex Macromolecules, Chapt 19, pp317-335, 2011

 
 
 
  Structural analysis of microbial poly(ε-L-lysine)/poly(acrylic acid) complex by FT-IR, DSC, and solid-state 13C and 15N NMR
S. Maeda, Y. Fujiwara, C. Sasaki, and K. Kunimoto
Polym. J., 1–4, 2011
 
 
 
  Study of vibrational spectra and molecular structure of intermolecular hydrogen bonded 2-thiohydantoin using Density Functional Theory
A. Sharma, V. Gupta, R. Mishra, P. Tandon, S. Maeda, K. Kunimoto
J. Mol. Struct., 2011, 1004, 237-247
 
 
 
  微生物産生高分子およびそのポリマーブレンドの構造解析
S. Maeda and K. Kunimoto
月刊ケミカルエンジニヤリング, 2011, 56(9), 63-68
 
 
 
  Solid state NMR study on microbial poly(ε-L-lysine)/carboxymethyl cellulose blends
S. Maeda, K. Kato, K.Takagi, M. Kobayashi, and K. Kunimoto
Int. J. Modern Phys. B, 25(31), 4315-4318, 2011
 
 
 
  Reaction of acylsilanes with α-sulfinyl carbanions: regioselective synthesis of silyl enol ethers
Mitsunori Honda, Tadashi Nakajima, Maiko Okada, Keita Yamaguchi, Mitsuhiro Suda, Ko-Ki Kunimoto and Masahito Segi
Tetrahedron Lett., 2011, 52, 3740-3742.
 
 
 
  Synthesis of selenohydantoins from isoselenocyanates and α-amino acids
Hajime Maeda, Koichi Sakata, Masaru Takashima, Tatsuya Watanabe, Nobuteru Mizukami, Mitsunori Honda, and Masahito Segi
Heterocycles, 2011, 82, 1709-1717.
 
 
 
 

One-pot synthesis of selenoureas and selenocarbamates via selenation of isocyanates with bis(dimethylaluminum) selenide
Hajime Maeda, Masaru Takashima, Koichi Sakata, Tatsuya Watanabe, Mitsunori Honda, Masahito Segi
Tetrahedron Lett., 2011, 52, 415-417.

 
 
 
  A novel utilization of acylsilanes in organic synthesis
Honda, M. and Segi, M.
J. Synth. Org. Chem., Jpn. 2010, 68, 601-613.
 
 
 
  The reaction of 1-silylcyclopropyl anions with dichloromethyl methyl ether: the efficient synthesis of cyclopropyl silyl ketones via cyclopropylidene derivatives
Nishizawa, T.; Nakae, K.; Honda, M.; Kunimoto, K-K.; Segi, M.
Tetrahedron Lett., 2010, 51, 1294-1297.
 
 
 
  硫酸を使わないエステル合成-固体酸ナフィオンの活用
須田光広, 本田光典, 国本浩喜
化学と教育, 58(4), 174-175 (2010)
 
 
 
  HPLC behavior of tea catechins on cyclodextrin-bonded silica column
Hisako Okumura, Yutaka Ikeda, Masaki Ichitani, Takanobu Takihara, Naohiro Kuriyama, Taeko Nakajima, Noriko Shoji and Ko-Ki Kunimoto
Jpn. J. Food Chem. Safety, 16(3), 152-156 (2009)
 
 
 
  A new polymorph of 1-acetyl-2-thiohydantoin
Kazutaka Taniguchi, Hisako Okumura, Mitsunori Honda, Mitsuhiro Suda, Shuhei Fujinami, Akio Kuwae, Kazuhiko Hanai, Shiro Maeda and Ko-Ki Kunimoto
X-ray Structure Analysis Online, 25, X93-X94 (2009)
 
 
 
  A new polymorph of 2-Thiohydantoin
Toshikazu Ogawa, Hisako Okumura, Mitsunori Honda, Mitsuhiro Suda, Shuhei Fujinami, Akio Kuwae, Kazuhiko Hanai and Ko-Ki Kunimoto
X-ray Structure Analysis Online, 25, X91-X92 (2009)
 
 
 
  Crystal structures and conformations of 5-benzyl-2-thiohydantoin and its 1-acetylated derivative
Ko-Ki Kunimoto, Masaki Ichitani, Toshikazu Ogawa, Soh-ichi Kitoh, Akio Kuwae and Kazuhiko Hanai
Spectrosc. Lett., 42(2), 73-80 (2009)
 
 
 
  Reaction behavior of cyclopropylmethyl cations derived 1-phenylselenocyclopropylmethanols with acids
Honda, M.; Nishizawa, T.; Nishii, Y.; Fujinami, S.; Segi, M.
Tetrahedron, 2009, 65, 9403-9411.
 
 
 
     
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