Preparation of Cyclic β-Amino Acid Derivatives with Quaternary Carbon Center via a Radical Addition-Cyclization Sequence

Heterocycles ◽  
2014 ◽  
Vol 89 (1) ◽  
pp. 143 ◽  
Author(s):  
Okiko Miyata ◽  
Norihiko Takeda ◽  
Masafumi Ueda ◽  
Seiko Kajisa ◽  
Kenji Matsuno ◽  
...  
Keyword(s):  
Amino Acid ◽  
Radical Addition ◽  
Amino Acid Derivatives ◽  
Quaternary Carbon

ChemInform Abstract: Preparation of Cyclic β-Amino Acid Derivatives with Quaternary Carbon Center via a Radical Addition-Cyclization Sequence.

ChemInform ◽  
2014 ◽  
Vol 45 (23) ◽  
pp. no-no
Author(s):  
Okiko Miyata ◽  
Norihiko Takeda ◽  
Masafumi Ueda ◽  
Seiko Kajisa ◽  
Kenji Matsuno ◽  
...  
Keyword(s):  
Amino Acid ◽  
Radical Addition ◽  
Amino Acid Derivatives ◽  
Quaternary Carbon

scholarly journals Directed, Nickel-Catalyzed Umpolung 1,2-Carboamination of Alkenyl Carbonyl Compounds

2018 ◽  
Author(s):  
Vincent van der Puyl ◽  
Joseph Derosa ◽  
Keary Engle
Keyword(s):  
Amino Acid ◽  
Tertiary Amine ◽  
Carbonyl Compounds ◽  
Amino Acid Derivatives ◽  
Quaternary Carbon ◽  
Carbon Centers ◽  
Two Component ◽  
Directing Group

We report a regioselective, nickel-catalyzed <i>syn</i>-1,2-carboamination of non-conjugated alkenyl carbonyl compounds with <i>O</i>-benzoyl hydroxylamine (N–O) electrophiles and aryl/alkylzinc nucleophiles to afford β- and γ-amino acid derivatives. This method enables preparation of products containing structurally diverse tertiary amine motifs, including heterocycles, and can also be used to form quaternary carbon centers. The reaction takes advantage of a tethered 8-aminoquinoline directing group to control the regiochemical outcome and suppress two-component coupling between the N–O electrophile and organozinc nucleophile.

scholarly journals Directed, Nickel-Catalyzed Umpolung 1,2-Carboamination of Alkenyl Carbonyl Compounds

2018 ◽  
Author(s):  
Vincent van der Puyl ◽  
Joseph Derosa ◽  
Keary Engle
Keyword(s):  
Amino Acid ◽  
Tertiary Amine ◽  
Carbonyl Compounds ◽  
Amino Acid Derivatives ◽  
Quaternary Carbon ◽  
Carbon Centers ◽  
Two Component ◽  
Directing Group

We report a regioselective, nickel-catalyzed <i>syn</i>-1,2-carboamination of non-conjugated alkenyl carbonyl compounds with <i>O</i>-benzoyl hydroxylamine (N–O) electrophiles and aryl/alkylzinc nucleophiles to afford β- and γ-amino acid derivatives. This method enables preparation of products containing structurally diverse tertiary amine motifs, including heterocycles, and can also be used to form quaternary carbon centers. The reaction takes advantage of a tethered 8-aminoquinoline directing group to control the regiochemical outcome and suppress two-component coupling between the N–O electrophile and organozinc nucleophile.

scholarly journals Stereoselective Synthesis of Unnatural α-Amino Acid Derivatives through Photoredox Catalysis

2021 ◽  
Author(s):  
Andrey Shatskiy ◽  
Anton Axelsson ◽  
Elena Vladimirovna Stepanova ◽  
Jian-Quan Liu ◽  
Temerdashev Azamat ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Visible Light ◽  
Convenient Method ◽  
Stereoselective Synthesis ◽  
Radical Addition ◽  
Amino Acid Derivatives ◽  
Photoredox Catalysis

A protocol for stereoselective C-radical addition to a chiral glyoxylate-derived N-sulfinyl imine was developed through visible light-promoted photoredox catalysis, providing a convenient method for the synthesis of unnatural α-amino acids....

Three Amino Acid Derivatives of Valproic Acid: Design, Synthesis, Theoretical and Experimental Evaluation as Anticancer Agents

2014 ◽  
Vol 14 (7) ◽  
pp. 984-993 ◽  
Author(s):  
Gabriela Luna-Palencia ◽  
Federico Martinez-Ramos ◽  
Ismael Vasquez-Moctezuma ◽  
Manuel Fragoso-Vazquez ◽  
Jessica Mendieta-Wejebe ◽  
...  
Keyword(s):  
Valproic Acid ◽  
Amino Acid ◽  
Anticancer Agents ◽  
Experimental Evaluation ◽  
Amino Acid Derivatives ◽  
Design Synthesis ◽  
Derivatives Of
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