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Kayoko Hata

Osaka University

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Publication

Featured researches published by Kayoko Hata.

Chemical Communications | 2010

Organic synthesis using a hypervalent iodine reagent: unexpected and novel domino reaction leading to spiro cyclohexadienone lactones

Hiromichi Fujioka; Hideyuki Komatsu; Taeko Nakamura; Akihito Miyoshi; Kayoko Hata; Jnashuara Ganesh; Kenichi Murai; Yasuyuki Kita

The reaction of 1-(p-hydroxyaryl)cyclobutanols and phenyl iodide(III) diacetate in hexafluoroisopropanol and water produced spiro cyclohexadienone lactones via a domino reaction.

Chemical Communications | 2005

A new synthesis of dienone lactones using a combination of hypervalent iodine(III) reagent and heteropoly acid

Kayoko Hata; Hiromi Hamamoto; Yukiko Shiozaki; Yasuyuki Kita

The oxidation of non-phenolic alkanoic acid derivatives to oxygen heterocycles was investigated; a new oxidative route to dienone lactones has been developed using a combination of hypervalent iodine(III) reagent, phenyliodine(III) bis(trifluoroacetate)(PIFA), and heteropoly acid (HPA).

Chemistry: A European Journal | 2005

Efficient synthesis of thioesters and amides from aldehydes by using an intermolecular radical reaction in water

Hisanori Nambu; Kayoko Hata; Masato Matsugi; Yasuyuki Kita

Tetrahedron Letters | 2004

A novel and direct synthesis of chroman derivatives using a hypervalent iodine(III) reagent

Hiromi Hamamoto; Kayoko Hata; Hisanori Nambu; Yukiko Shiozaki; Hirofumi Tohma; Yasuyuki Kita

Tetrahedron | 2007

Nucleophilic attack of intramolecular hydroxyl groups on electron-rich aromatics using hypervalent iodine(III) oxidation

Kayoko Hata; Hiromi Hamamoto; Yukiko Shiozaki; Simon B. Cämmerer; Yasuyuki Kita

Chemistry: A European Journal | 2007

Facile and efficient synthesis of lactols by a domino reaction of 2,3-epoxy alcohols with a hypervalent iodine(III) reagent and its application to the synthesis of lactones and the asymmetric synthesis of (+)-tanikolide.

Hiromichi Fujioka; Satoshi Matsuda; Mai Horai; Eri Fujii; Maiko Morishita; Natsuko Nishiguchi; Kayoko Hata; Yasuyuki Kita

Chemistry: A European Journal | 2004

The Efficient Synthesis of Morphinandienone Alkaloids by Using a Combination of Hypervalent Iodine(III) Reagent and Heteropoly Acid

Hiromi Hamamoto; Yukiko Shiozaki; Hisanori Nambu; Kayoko Hata; Hirofumi Tohma; Yasuyuki Kita

Angewandte Chemie | 2005

Domino reaction of 2,3-epoxy-1-alcohols and PIFA in the presence of H2O and the concise synthesis of (+)-tanikolide.

Yasuyuki Kita; Satoshi Matsuda; Eri Fujii; Mai Horai; Kayoko Hata; Hiromichi Fujioka

Tetrahedron Letters | 2004

A simple and efficient radical reduction using water-soluble radical initiator and hypophosphorous acid in aqueous alcohol

Hisanori Nambu; Anahita Hessamian Alinejad; Kayoko Hata; Hiromichi Fujioka; Yasuyuki Kita

Chemical & Pharmaceutical Bulletin | 2004

A Novel and Concise Synthesis of Spirodienone Alkaloids Using Hypervalent Iodine(III) Reagents

Hiromi Hamamoto; Yukiko Shiozaki; Kayoko Hata; Hirofumi Tohma; Yasuyuki Kita

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Yasuyuki Kita

Ritsumeikan University

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Hisanori Nambu

Hokkaido University

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Hiromi Hamamoto

Osaka University

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Hiromichi Fujioka

Osaka University

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Yukiko Shiozaki

Osaka University

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Eri Fujii

Osaka University

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Hirofumi Tohma

Osaka University

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Masato Matsugi

Meijo University

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Satoshi Matsuda

Osaka University

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Mai Horai

Osaka University

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