Naotaka Sawada | Researchain

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Journal of Organic Chemistry | 2016

A Nitrogen-Assisted One-Pot Heteroaryl Ketone Synthesis from Carboxylic Acids and Heteroaryl Halides

Krystyna Demkiw; Hirofumi Araki; Eric L. Elliott; Christopher L. Franklin; Yoonjoo Fukuzumi; Frederick A. Hicks; Kazushi Hosoi; Tadashi Hukui; Yoichiro Ishimaru; Erin O’Brien; Yoshimasa Omori; Masahiro Mineno; Hideya Mizufune; Naotaka Sawada; Yasuhiro Sawai; Lei Zhu

A practical and highly effective one-pot synthesis of versatile heteroaryl ketones directly from carboxylic acids and heteroaryl halides under mild conditions is reported. This method does not require derivatization of carboxylic acids (preparation of acid chlorides, Weinreb amides, etc.) or the use of any additives/catalysts. A wide substrate scope of carboxylic acids with high functional group tolerance has also been demonstrated. The results reveal that the presence of an α-nitrogen on the halide substrate greatly improves the desired ketone formation.

Journal of Organic Chemistry | 2003

Convergent synthesis of the E'FGH ring fragment of ciguatoxin 1B via an acetylene cobalt complex strategy.

Shigeyuki Takai; Naotaka Sawada; Minoru Isobe

Tetrahedron Letters | 2006

Efficient copper-catalyzed coupling of aryl iodides and thiobenzoic acid

Naotaka Sawada; Takahiro Itoh; Nobuyoshi Yasuda

Journal of Organic Chemistry | 2005

Practical synthesis of a neuropeptide Y antagonist via stereoselective addition to a ketene

Takehiko Iida; Hiroki Satoh; Kenji Maeda; Yuhei Yamamoto; Kenichi Asakawa; Naotaka Sawada; Toshihiro Wada; Chie Kadowaki; Takahiro Itoh; Toshiaki Mase; Steven A. Weissman; Dave Tschaen; Shane W. Krska; Ralph P. Volante

Archive | 2008