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- Publications
- Influence
A new artificial cyclase for polyprenoids: enantioselective total synthesis of (-)-chromazonarol, (+)-8-epi-puupehedione, and (-)-11'-deoxytaondiol methyl ether.
- H. Ishibashi, K. Ishihara, H. Yamamoto
- Chemistry, Medicine
- Journal of the American Chemical Society
- 18 August 2004
This paper describes a new artificial cyclase, optically pure 3-o-fluorobenzyloxy-2-hydroxy-2'-(p-methoxybemzyl)-1,1'-binaphthyl.SnCl4, which is effective for the enantioselective cyclization of… Expand
Widely useful DMAP-catalyzed esterification under auxiliary base- and solvent-free conditions.
- A. Sakakura, Kimio Kawajiri, T. Ohkubo, Y. Kosugi, K. Ishihara
- Chemistry, Medicine
- Journal of the American Chemical Society
- 6 November 2007
With regard to atom economy and E-factor, catalytic condensation of carboxylic acids with equimolar amounts of alcohols is the most desirable. Although several highly active dehydration catalysts… Expand
Hypervalent iodine-mediated oxidation of alcohols.
- M. Uyanik, K. Ishihara
- Chemistry, Medicine
- Chemical communications
- 9 April 2009
Over the past two decades there has been a dramatic increse in the use of hypervalent iodine compounds in synthetic organic chemistry due to their mild and selective oxidizing properties. Hypervalent… Expand
3,4,5-Trifluorobenzeneboronic Acid as an Extremely Active Amidation Catalyst.
- K. Ishihara, S. Ohara, H. Yamamoto
- Chemistry, Medicine
- The Journal of organic chemistry
- 26 June 1996
Which is the actual catalyst: chiral phosphoric Acid or chiral calcium phosphate?
- M. Hatano, K. Moriyama, T. Maki, K. Ishihara
- Chemistry, Medicine
- Angewandte Chemie
- 17 May 2010
Highly efficient alkylation to ketones and aldimines with Grignard reagents catalyzed by zinc(II) chloride.
- M. Hatano, S. Suzuki, K. Ishihara
- Chemistry, Medicine
- Journal of the American Chemical Society
- 14 July 2006
A highly efficient alkylation to ketones and aldimines with Grignard reagents in the presence of catalytic trialkylzinc(II) ate complexes derived from ZnCl2 (10 mol %) in situ was developed. This… Expand
The First Enantioselective Biomimetic Cyclization of Polyprenoids
- K. Ishihara, and Shingo Nakamura, H. Yamamoto
- Chemistry
- 11 May 1999
Cyanuric chloride as a mild and active Beckmann rearrangement catalyst.
- Yoshiro Furuya, K. Ishihara, H. Yamamoto
- Chemistry, Medicine
- Journal of the American Chemical Society
- 23 July 2005
The first general organocatalytic Beckmann rearrangement of ketoximes into amides has been realized by the catalytic use of cyanuric chloride. Furthermore, acids such as HCl and ZnCl2 are effective… Expand
Design of Brønsted Acid-Assisted Chiral Lewis Acid (BLA) Catalysts for Highly Enantioselective Diels−Alder Reactions
- K. Ishihara, Hideki Kurihara, M. Matsumoto, H. Yamamoto
- Chemistry
- 29 June 1998
Bronsted acid-assisted chiral Lewis acid (BLA) was highly effective as a chiral catalyst for the enantioselective Diels−Alder reaction of both α-substituted and α-unsubstituted α,β-enals with various… Expand
Highly alkyl-selective addition to ketones with magnesium ate complexes derived from Grignard reagents.
- M. Hatano, Tokihiko Matsumura, K. Ishihara
- Chemistry, Medicine
- Organic letters
- 15 January 2005
A highly efficient alkyl-selective addition to ketones with magnesium ate complexes derived from Grignard reagents and alkyllithiums is described. The nucleophilicity of R in R3MgLi is remarkably… Expand