ChemInform Abstract: Asymmetric Synthesis of α,α-Disubstituted α-Amino Acids via Enantioselective Alkylation of Azlactones under Biphasic Conditions Using P-Spiro Chiral Tetraaminophosphonium Salts as a Phase-Transfer Catalyst.

Daisuke Uraguchi; Yoshihiro Asai; Yuki Seto; Takashi Ooi

doi:10.1002/chin.200928171

ChemInform Abstract: Asymmetric Synthesis of α,α-Disubstituted α-Amino Acids via Enantioselective Alkylation of Azlactones under Biphasic Conditions Using P-Spiro Chiral Tetraaminophosphonium Salts as a Phase-Transfer Catalyst.

ChemInform ◽

10.1002/chin.200928171 ◽

2009 ◽

Vol 40 (28) ◽

Author(s):

Daisuke Uraguchi ◽

Yoshihiro Asai ◽

Yuki Seto ◽

Takashi Ooi

Keyword(s):

Amino Acids ◽

Asymmetric Synthesis ◽

Phase Transfer ◽

Phase Transfer Catalyst ◽

Enantioselective Alkylation

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Asymmetric Synthesis of α,α-Disubstituted α-Amino Acids via Enantioselective Alkylation of Azlactones under Biphasic Conditions Using P-Spiro Chiral Tetraaminophosphonium Salts as a Phase-Transfer Catalyst

Synlett ◽

10.1055/s-0028-1087812 ◽

2009 ◽

Vol 2009 (04) ◽

pp. 658-660 ◽

Cited By ~ 5

Author(s):

Takashi Ooi ◽

Daisuke Uraguchi ◽

Yoshihiro Asai ◽

Yuki Seto

Keyword(s):

Amino Acids ◽

Asymmetric Synthesis ◽

Phase Transfer ◽

Phase Transfer Catalyst ◽

Enantioselective Alkylation

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Development of a Recyclable Fluorous Chiral Phase-Transfer Catalyst: Application to the Catalytic Asymmetric Synthesis of α-Amino Acids.

ChemInform ◽

10.1002/chin.200435186 ◽

2004 ◽

Vol 35 (35) ◽

Author(s):

Seiji Shirakawa ◽

Youhei Tanaka ◽

Keiji Maruoka

Keyword(s):

Amino Acids ◽

Asymmetric Synthesis ◽

Phase Transfer ◽

Phase Transfer Catalyst ◽

Chiral Phase ◽

Catalytic Asymmetric Synthesis ◽

Catalytic Asymmetric

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Convenient preparation of highly active phase-transfer catalyst for catalytic asymmetric synthesis of α-alkyl- and α,α-dialkyl-α-amino acids: application to the short asymmetric synthesis of BIRT-377

Tetrahedron Letters ◽

10.1016/j.tetlet.2005.09.185 ◽

2005 ◽

Vol 46 (49) ◽

pp. 8555-8558 ◽

Cited By ~ 37

Author(s):

Zhenfu Han ◽

Yukako Yamaguchi ◽

Masanori Kitamura ◽

Keiji Maruoka

Keyword(s):

Amino Acids ◽

Asymmetric Synthesis ◽

Phase Transfer ◽

Active Phase ◽

Phase Transfer Catalyst ◽

Catalytic Asymmetric Synthesis ◽

Highly Active ◽

Catalytic Asymmetric ◽

Convenient Preparation

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A practical asymmetric synthesis of α-methyl α-amino acids using a chiral Cu–salen complex as a phase transfer catalyst

Tetrahedron Letters ◽

10.1016/s0040-4039(00)01247-8 ◽

2000 ◽

Vol 41 (37) ◽

pp. 7245-7248 ◽

Cited By ~ 57

Author(s):

Yuri N Belokon' ◽

R.Gareth Davies ◽

Michael North

Keyword(s):

Amino Acids ◽

Asymmetric Synthesis ◽

Phase Transfer ◽

Phase Transfer Catalyst ◽

Salen Complex

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Convenient Preparation of Highly Active Phase-Transfer Catalyst for Catalytic Asymmetric Synthesis of α-Alkyl- and α,α-Dialkyl-α-amino Acids: Application to the Short Asymmetric Synthesis of BIRT-377.

ChemInform ◽

10.1002/chin.200612197 ◽

2006 ◽

Vol 37 (12) ◽

Author(s):

Zhenfu Han ◽

Yukako Yamaguchi ◽

Masanori Kitamura ◽

Keiji Maruoka

Keyword(s):

Amino Acids ◽

Asymmetric Synthesis ◽

Phase Transfer ◽

Active Phase ◽

Phase Transfer Catalyst ◽

Catalytic Asymmetric Synthesis ◽

Highly Active ◽

Catalytic Asymmetric ◽

Convenient Preparation

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ChemInform Abstract: Molecular Design of a C2-Symmetric Chiral Phase-Transfer Catalyst for Practical Asymmetric Synthesis of α-Amino Acids.

ChemInform ◽

10.1002/chin.199945038 ◽

2010 ◽

Vol 30 (45) ◽

pp. no-no

Author(s):

Takashi Ooi ◽

Minoru Kameda ◽

Keiji Maruoka

Keyword(s):

Amino Acids ◽

Asymmetric Synthesis ◽

Phase Transfer ◽

Molecular Design ◽

Phase Transfer Catalyst ◽

Chiral Phase

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Molecular Design of aC2-Symmetric Chiral Phase-Transfer Catalyst for Practical Asymmetric Synthesis ofα-Amino Acids

Journal of the American Chemical Society ◽

10.1021/ja991062w ◽

1999 ◽

Vol 121 (27) ◽

pp. 6519-6520 ◽

Cited By ~ 269

Author(s):

Takashi Ooi ◽

Minoru Kameda ◽

Keiji Maruoka

Keyword(s):

Amino Acids ◽

Asymmetric Synthesis ◽

Phase Transfer ◽

Molecular Design ◽

Phase Transfer Catalyst ◽

Chiral Phase

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Development of a Recyclable Fluorous Chiral Phase-Transfer Catalyst: Application to the Catalytic Asymmetric Synthesis of α-Amino Acids

Organic Letters ◽

10.1021/ol049724w ◽

2004 ◽

Vol 6 (9) ◽

pp. 1429-1431 ◽

Cited By ~ 40

Author(s):

Seiji Shirakawa ◽

Youhei Tanaka ◽

Keiji Maruoka

Keyword(s):

Amino Acids ◽

Asymmetric Synthesis ◽

Phase Transfer ◽

Phase Transfer Catalyst ◽

Chiral Phase ◽

Catalytic Asymmetric Synthesis ◽

Catalytic Asymmetric

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ChemInform Abstract: A Practical Asymmetric Synthesis of α-Methyl α-Amino Acids Using a Chiral Cu-Salen Complex as a Phase-Transfer Catalyst.

ChemInform ◽

10.1002/chin.200048038 ◽

2000 ◽

Vol 31 (48) ◽

pp. no-no

Author(s):

Yuri N. Belokon' ◽

R. Gareth Davies ◽

Michael North

Keyword(s):

Amino Acids ◽

Asymmetric Synthesis ◽

Phase Transfer ◽

Phase Transfer Catalyst ◽

Salen Complex

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ChemInform Abstract: Chiral Salen-Metal Complexes as Novel Catalysts for the Asymmetric Synthesis of α-Amino Acids under Phase Transfer Catalysis Conditions.

ChemInform ◽

10.1002/chin.200130192 ◽

2010 ◽

Vol 32 (30) ◽

pp. no-no

Author(s):

Yuri N. Belokon ◽

Michael North ◽

Tatiana D. Churkina ◽

Nikolai S. Ikonnikov ◽

Victor I. Maleev

Keyword(s):

Amino Acids ◽

Metal Complexes ◽

Asymmetric Synthesis ◽

Phase Transfer Catalysis ◽

Phase Transfer

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