Ryuuichirou Hayakawa: search on Z-Library

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1

The Baker's Yeast Reduction of the β-Keto Aldehydes in the Presence of a Sulfur Compound

Hayakawa, Ryuuichirou, Shimizu, Makato

Journal:

Year:

1999

Language:

english

File:

PDF, 52 KB

english, 1999

2

ChemInform Abstract: Synthesis of Chiral Epoxides from Aldehydes Using Sulfur Ylide Derived from Reduced Product of Baker′s Yeast Reduction.

Ryuuichirou Hayakawa, Makoto Shimizu

Journal:

Year:

1999

File:

PDF, 33 KB

1999

3

Pinacol Coupling Reaction of β-Halo-α,β-unsaturated Aldehydes Promoted by TiI4.

Makoto Shimizu, Hiroshi Goto, Ryuuichirou Hayakawa

Journal:

Year:

2003

File:

PDF, 235 KB

2003

4

Synthesis of Chiral Epoxides from Aldehydes Using Sulfur Ylide Derived from Reduced Product of Bakers' Yeast Reduction

Hayakawa, Ryuuichirou, Shimizu, Makoto

Journal:

Year:

1999

Language:

english

File:

PDF, 53 KB

english, 1999

5

ChemInform Abstract: Reformatsky-Type Reaction of α-Haloketones Promoted by Titanium Tetraiodide.

Makoto Shimizu, Fumiko Kobayashi, Ryuuichirou Hayakawa

Journal:

Year:

2002

File:

PDF, 31 KB

2002

6

Highly Diastereoselective Addition Reaction of Ketene Silyl Acetals to Imines Catalyzed by Samarium(III) Iodide

Hayakawa, Ryuuichirou, Shimizu, Makoto

Journal:

Chemistry Letters

Year:

1999

File:

PDF, 364 KB

1999

7

The baker's yeast reduction of 1-acetoxy-2-alkanones in the presence of a sulfur compound

Ryuuichirou Hayakawa, Makoto Shimizu, Tamotsu Fujisawa

Journal:

Tetrahedron: Asymmetry

Year:

1997

Language:

english

File:

PDF, 268 KB

english, 1997

8

ChemInform Abstract: The Baker′s Yeast Reductions of α- and β-Keto Ester Derivatives in the Presence of a Sulfur Compound.

Ryuuichirou Hayakawa, Kazumi Nozawa, Kimihiko Kimura, Makoto Shimizu

Journal:

Year:

1999

File:

PDF, 34 KB

1999

9

ChemInform Abstract: Highly Diastereoselective Addition Reaction of Ketene Silyl Acetals to Imines Catalyzed by Samarium(III) Iodide.

Ryuuichirou Hayakawa, Makoto Shimizu

Journal:

Year:

1999

File:

PDF, 34 KB

1999

10

The bakers' yeast reductions of α- and β-keto ester derivatives in the presence of a sulfur compound

Ryuuichirou Hayakawa, Kazumi Nozawa, Kimihiko Kimura, Makoto Shimizu

Journal:

Year:

1999

Language:

english

File:

PDF, 613 KB

english, 1999

11

Pinacol Coupling Reaction of β-Halo-α,β-unsaturated Aldehydes Promoted by TiI 4

Shimizu, Makoto, Goto, Hiroshi, Hayakawa, Ryuuichirou

Journal:

Organic Letters

Year:

2002

Language:

english

File:

PDF, 66 KB

english, 2002

12

Novel Carbon−Carbon Bond Formation Reaction of Methoxyallene Oxide Promoted by TiI 4

Hayakawa, Ryuuichirou, Shimizu, Makoto

Journal:

Organic Letters

Year:

2000

Language:

english

File:

PDF, 50 KB

english, 2000

13

ChemInform Abstract: Chemoselective Deoxygenation of Sulfoxides with Titanium Tetraiodide.

Makoto Shimizu, Katsuhiko Shibuya, Ryuuichirou Hayakawa

Journal:

Year:

2001

File:

PDF, 32 KB

2001

14

Titanium(IV) Iodide Promoted Pinacol Coupling

Hayakawa, Ryuuichirou, Shimizu, Makoto

Journal:

Chemistry Letters

Year:

2000

Language:

english

File:

PDF, 294 KB

english, 2000

15

Reversal of diastereofacial selectivity in the nucleophilic addition reaction to chiral N-sulfinimine and application to the synthesis of indrizidine 223AB

Yuji Koriyama, Akihiro Nozawa, Ryuuichirou Hayakawa, Makoto Shimizu

Journal:

Year:

2002

Language:

english

File:

PDF, 228 KB

english, 2002

16

Control of Enantioselectivity in the Bakers' Yeast Reduction of β-Keto Ester Derivatives in the Presence of a Sulfur Compound

Ryuuichirou Hayakawa, Kazumi Nozawa, Makoto Shimizu, Tamotsu Fujisawa

Journal:

Tetrahedron Letters

Year:

1998

Language:

english

File:

PDF, 654 KB

english, 1998

17

ChemInform Abstract: Chemoselective Reduction of α-Imino Carbonyl Compounds into α-Amino Carbonyl Compounds with Titanium Tetraiodide.

Makoto Shimizu, Tetsuya Sahara, Ryuuichirou Hayakawa

Journal:

Year:

2002

File:

PDF, 30 KB

2002

18

ChemInform Abstract: Use of 1-Methoxy-1-trimethylsilylallene Oxide and Titanium Tetraiodide as a Dianion Synthon of Methoxyacetone.

Ryuuichirou Hayakawa, Hiroaki Makino, Makoto Shimizu

Journal:

Year:

2002

File:

PDF, 31 KB

2002

19

ChemInform Abstract: Titanium(IV) Iodide Promoted Pinacol Coupling.

Ryuuichirou Hayakawa, Makoto Shimizu

Journal:

Year:

2000

File:

PDF, 27 KB

2000

20

Reformatsky-type reaction of α-haloketones promoted by titanium tetraiodide

Makoto Shimizu, Fumiko Kobayashi, Ryuuichirou Hayakawa

Journal:

Year:

2001

Language:

english

File:

PDF, 87 KB

english, 2001

21

A Facile Synthesis of 1β-Methylcarbapenem Skeleton Utilizing Cyclization of α,β-Unsaturated Ester with Methanesulfenyl Chloride

Hayakawa, Ryuuichirou, Fuseya, Ichiro, Konagaya, Tomohiro, Shimizu, Makoto, Fujisawa, Tamotsu

Journal:

Chemistry Letters

Year:

1998

File:

PDF, 160 KB

1998

22

Ethyl (R)-3-hydroxy-4-phenylthiobutyrate: Synthesis by the bakers' yeast reduction and use as a precursor of enantiomerically pure β-lactam

Ryuuichirou Hayakawa, Makoto Shimizu, Tamotsu Fujisawa

Journal:

Tetrahedron Letters

Year:

1996

Language:

english

File:

PDF, 224 KB

english, 1996

23

Reduction of 1,2-diketones with titanium tetraiodide: a simple approach to α-hydroxy ketones

Ryuuichirou Hayakawa, Tetsuya Sahara, Makoto Shimizu

Journal:

Tetrahedron Letters

Year:

2000

Language:

english

File:

PDF, 62 KB

english, 2000

24

Selective synthesis of optically active 3-haloazetidin-2-ones or aziridines by the condensation of various metal enolates of α-haloacetate with a chiral imine

Tamotsu Fujisawa, Ryuuichirou Hayakawa, Makoto Shimizu

Journal:

Tetrahedron Letters

Year:

1992

Language:

english

File:

PDF, 272 KB

english, 1992

25

Use of 1-Methoxy-1-trimethylsilylallene Oxide and Titanium Tetraiodide as a Dianion Synthon of Methoxyacetone

Hayakawa, Ryuuichirou, Makino, Hiroaki, Shimizu, Makoto

Journal:

Chemistry Letters

Year:

2001

Language:

english

File:

PDF, 50 KB

english, 2001

26

ChemInform Abstract: The Baker′s Yeast Reduction of the β-Keto Aldehydes in the Presence of a Sulfur Compound.

Ryuuichirou Hayakawa, Makoto Shimizu

Journal:

Year:

1999

File:

PDF, 33 KB

1999

27

ChemInform Abstract: Reduction of 1,2-Diketones with Titanium Tetraiodide: A Simple Approach to α-Hydroxy Ketones.

Ryuuichirou Hayakawa, Tetsuya Sahara, Makoto Shimizu

Journal:

Year:

2001

File:

PDF, 31 KB

2001

28

Hydrogenolysis-Isomerization-Reduction of Propargyl Acetate, and Regio- and Stereoselective Hydrogenation of Dienyl Ester for the Synthesis of 1 β -Methylcarbapenem Precursor

Fujisawa, Tamotsu, Hayakawa, Ryuuichirou, Shimizu, Makoto

Journal:

Chemistry Letters

Year:

1995

File:

PDF, 355 KB

1995

29

ChemInform Abstract: Novel Carbon—Carbon Bond Formation Reaction of Methoxyallene Oxide Promoted by TiI4.

Ryuuichirou Hayakawa, Makoto Shimizu

Journal:

Year:

2001

File:

PDF, 34 KB

2001

30

Chemoselective Reduction of α-Imino Carbonyl Compounds into α-Amino Carbonyl Compounds with Titanium Tetraiodide

Shimizu, Makoto, Sahara, Tetsuya, Hayakawa, Ryuuichirou

Journal:

Chemistry Letters

Year:

2001

Language:

english

File:

PDF, 42 KB

english, 2001

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