scholarly journals Asymmetric Synthesis of Threonine by Optically Active Complex Ions of Cobalt

1959 ◽  
Vol 32 (3) ◽  
pp. 308-309 ◽  
Author(s):  
Masuo Murakami ◽  
Kozo Takahashi
Keyword(s):  
Asymmetric Synthesis ◽  
Optically Active ◽  
Complex Ions ◽  
Active Complex

Studies of cobalt(III) complexes of thiosemicarbazide

1970 ◽  
Vol 48 (15) ◽  
pp. 2327-2333 ◽  
Author(s):  
Kenneth K. W. Sun ◽  
Roland A. Haines
Keyword(s):  
Optically Active ◽  
Optical Rotatory Dispersion ◽  
Bond Rupture ◽  
Ionic Form ◽  
Optical Rotatory ◽  
Geometric Isomers ◽  
Complex Ions ◽  
Active Complex ◽  
Cis And Trans ◽  
Rupture Mechanism

cis and trans geometric isomers of low spin octahedral cobalt(III) complexes containing either thiosemicarbazide (Htsc) or its anion (tsc) have been prepared and electronic spectra are presented and discussed. For the ionic form [Co(Htsc)3]3+ both isomers were resolved and absolute configurations were assigned on the basis of optical rotatory dispersion and circular dichroism measurements. The interconversion of these optically active complex ions in aqueous solution was studied and a bond rupture mechanism is proposed to account for the observed inversion and isomerization.

Central–axial–central chirality transfer: asymmetric synthesis of highly substituted indenes bearing a stereogenic quaternary carbon center from optically active propargyl alcohols

2015 ◽  
Vol 51 (2) ◽  
pp. 380-383 ◽  
Author(s):  
Masahiro Egi ◽  
Kaori Shimizu ◽  
Marin Kamiya ◽  
Yuya Ota ◽  
Shuji Akai
Keyword(s):  
Asymmetric Synthesis ◽  
Optically Active ◽  
Quaternary Carbon ◽  
Chirality Transfer ◽  
Propargyl Alcohols

An asymmetric synthesis of highly substituted indenes has been developed via the central–axial–central chirality transfer from optically active propargyl alcohols.

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