scholarly journals Electro-organic Reactions on Organic Electrodes. Part 2. Electrochemical Asymmetric Reduction of Citraconic and Mesaconic Acids on Optically-active Poly(amino acid)-coated Electrodes

1983 ◽  
Vol 56 (9) ◽  
pp. 2778-2783 ◽  
Author(s):  
Tsutomu Nonaka ◽  
Shigemitsu Abe ◽  
Toshio Fuchigami
Keyword(s):  
Amino Acid ◽  
Asymmetric Reduction ◽  
Optically Active ◽  
Organic Reactions ◽  
Coated Electrodes ◽  
Organic Electrodes

Convenient Preparation of Optically Active N,N’-Disubstituted Piperazines from Various (S)-α-Amino Acid Esters

Synthesis ◽  
1996 ◽  
Vol 1996 (04) ◽  
pp. 452-454 ◽  
Author(s):  
Masaaki Watanabe ◽  
Yoshitane Kojima ◽  
Kenji Kawabe ◽  
Eiji Hatamoto ◽  
Eiji Tsuru ◽  
...  
Keyword(s):  
Amino Acid ◽  
Optically Active ◽  
Amino Acid Esters ◽  
Convenient Preparation ◽  
Acid Esters

Circular dichroism spectra of amino acid complexes. II. Chelated amino acid complexes with the CoN5O chromophore

1970 ◽  
Vol 23 (9) ◽  
pp. 1735 ◽  
Author(s):  
CJ Hawkins ◽  
PJ Lawson
Keyword(s):  
Amino Acids ◽  
Circular Dichroism ◽  
Amino Acid ◽  
Visible Region ◽  
Optically Active ◽  
Circular Dichroism Spectra ◽  
Amino Acid Complexes ◽  
Similar Series ◽  
Cotton Effects ◽  
Circular Dichroïsm

The circular dichroism spectra of a series of optically active (α-aminocarboxylato)tetraamminecobalt(111) complexes have been measured in aqueous solution, and in the presence of salts of polarizable anions. The observed spectra in the visible region have been analysed to determine the signs of the Cotton effects of the three components of the 1A1g ↔ 1T1g cobalt(111) transition. For L-amino acids, the transition with A2g(D4h) parentage is negative, and the two transitions with Eg(D4h) parentage have opposite signs. Published circular dichroism spectra of complexes of the type [Co(en)2(L-am)]2+ were similarly interpreted in terms of a perturbed tetragonal chromophore, and it was shown that the vicinal effect of the L-amino acids imposed the same signs onto the component transitions as for the tetraammines and for a similar series of pentaamminecobalt(111) complexes.

Synthesis of Optically Active 2,3-Disubstituted Indoline ­Derivatives through Cycloaddition Reactions between Benzynes and α,β-Unsaturated γ-Aminobutyronitriles

Synlett ◽  
2018 ◽  
Vol 29 (04) ◽  
pp. 530-536 ◽  
Author(s):  
Takashi Ikawa ◽  
Shuji Akai ◽  
Yuta Sumii ◽  
Shigeaki Masuda ◽  
Ding Wang ◽  
...  
Keyword(s):  
Amino Acid ◽  
Cycloaddition Reaction ◽  
Optically Active ◽  
Amino Acid Derivatives ◽  
Cycloaddition Reactions

We report a method for synthesizing optically active 2,3-disubstituted indolines by the cycloaddition reaction of benzynes with various 4-[(4-toluenesulfonyl)amino]-(E)-but-2-enenitriles, which are readily prepared from the corresponding l-amino acid derivatives.

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