Works by Tozawa, Takashi

Results: 11

Diastereo- and Enantioselective Tandem Michael Addition and Lactonization between Silyl Enolates and α,β-Unsaturated Ketones Catalyzed by a Chiral Quaternary Ammonium Phenoxide.

Published in:

Chemistry Letters, 2006, v. 35, n. 4, p. 10, doi. 10.1246/cl.2006.360

By:

Tozawa, Takashi;
Yamane, Yoshinobu;
Mukaiyama, Teruaki

Publication type:

Article

Enantioselective Synthesis of 3,4-Dihydropyran-2-ones by Chiral Quaternary Ammonium Phenoxide-catalyzed Tandem Michael Addition and Lactonization.

Published in:

Chemistry Letters, 2006, v. 35, n. 1, p. 56, doi. 10.1246/cl.2006.56

By:

Tozawa, Takashi;
Yamane, Yoshinobu;
Mukaiyama, Teruaki

Publication type:

Article

An Efficient Method for the Preparation of Carboxamides by Dehydration Condensation Using Tetrakis(1,1,1,3,3,3-hexafluoro-2-propoxy)silane.

Published in:

Chemistry Letters, 2005, v. 34, n. 12, p. 1586, doi. 10.1246/cl.2005.1586

By:

Tozawa, Takashi;
Yamane, Yoshinobu;
Mukaiyama, Teruaki

Publication type:

Article

An Effective Method for the Synthesis of Carboxamides by Using Tetrakis(pyridine-2-yloxy)silane as a Mild Coupling Reagent.

Published in:

Chemistry Letters, 2005, v. 34, n. 10, p. 1334, doi. 10.1246/cl.2005.1334

By:

Tozawa, Takashi;
Yamane, Yoshinobu;
Mukaiyama, Teruaki

Publication type:

Article

A Convenient Method for Preparations of 1-Acylimidazoles and Carboxamides by Using Novel Imidazolylsilane Derivatives.

Published in:

Chemistry Letters, 2005, v. 34, n. 5, p. 734, doi. 10.1246/cl.2005.734

By:

Tozawa, Takashi;
Yamane, Yoshinobu;
Mukaiyama, Teruaki

Publication type:

Article

Stereoselective Synthesis of trans-3,4-Dihydropyran-2-ones by Phenoxide ion-catalyzed Tandem Michael Addition and Lactonization.

Published in:

Chemistry Letters, 2005, v. 34, n. 4, p. 514, doi. 10.1246/cl.2005.514

By:

Tozawa, Takashi;
Yamane, Yoshinobu;
Mukaiyama, Teruaki

Publication type:

Article

An Efficient Synthesis of 3,4-Dihydropyran-2-one Derivatives by Lewis Base-catalyzed Tandem Michael Addition and Lactonization.

Published in:

Chemistry Letters, 2004, v. 33, n. 11, p. 1454, doi. 10.1246/cl.2004.1454

By:

Tozawa, Takashi;
Fujisawa, Hidehiko;
Mukaiyama, Teruaki

Publication type:

Article

Lithium Alkoxide-promoted Michael Reaction between Silyl Enolates and α,β-Unsaturated Carbonyl Compounds.

Published in:

Chemistry Letters, 2004, v. 33, n. 11, p. 1410, doi. 10.1246/cl.2004.1410

By:

Mukaiyama, Teruaki;
Tozawa, Takashi;
Fujisawa, Hidehiko

Publication type:

Article

EFFECTS OF CEMENTED TUNGSTEN CARBIDE DUST ON RAT LUNGS FOLLOWING INTRATRACHEAL INJECTION OF SALINE SUSPENSION.

Published in:

Pathology International, 1980, v. 30, n. 2, p. 241, doi. 10.1111/j.1440-1827.1980.tb01319.x

By:

Kitamura, Hitoshi;
Yoshimura, Yoshiyuki;
Tozawa, Takashi;
Koshi, Kimiko

Publication type:

Article

CEMENTED TUNGSTEN CARBIDE PNEUMOCONIOSIS.

Published in:

Pathology International, 1978, v. 28, n. 6, p. 921, doi. 10.1111/j.1440-1827.1978.tb01281.x

By:

Kitamura, Hitoshi;
Kitamura, Hajime;
Tozawa, Takashi;
Kimula, Yuji

Publication type:

Article

Enantioselective Synthesis of 3,4-Dihydropyran-2-ones by Domino Michael Addition and Lactonization with New Asymmetric Organocatalysts: Cinchona-Alkaloid-Derived Chiral Quaternary Ammonium Phenoxides.

Published in:

Chemistry - An Asian Journal, 2007, v. 2, n. 1, p. 123, doi. 10.1002/asia.200600228

By:

Tozawa, Takashi;
Nagao, Hitoshi;
Yamane, Yoshinobu;
Mukaiyama, Teruaki

Publication type:

Article