论文信息 - PREPARATIVE SEPARATION OF CIS- AND TRANS-1,2-DIAMINOCYCLOHEXANE MIXTURE BY MEANS OF THE SELECTIVE NICKEL(II) COMPLEX FORMATION

PREPARATIVE SEPARATION OF CIS- AND TRANS-1,2-DIAMINOCYCLOHEXANE MIXTURE BY MEANS OF THE SELECTIVE NICKEL(II) COMPLEX FORMATION

The preparative separation method of cis- and trans-1,2-diaminocyclohexane (cis- and trans-dac) of commercially available dac preparations is reported by means of the selective complex formation of each dac with Ni(II) ions. cis- and trans-dac were separated as yellow Ni (cis-dac)2Cl2 and violet Ni(trans-dac)2(H2O)2Cl2 complexes respectively, which were precipitated preferentially under the appropriate conditions.

R. Saito | Y. Kidani

[1] R. G. Asperger,et al. Isomers of the Dichlorobis(l-cyclohexanediamine)cobalt(III) Ion , 1965 .

[2] A. Nielsen. The Isomeric Dinitrocyclohexanes. II. Stereochemistry1 , 1962 .