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The separation of N,N'-dibutyl-alpha ,alpha '-diphenylethylenediamine dihydrochloride into its meso and racemic forms by Craig's partition method

Schönenberger, Helmut (1958) The separation of N,N'-dibutyl-alpha ,alpha '-diphenylethylenediamine dihydrochloride into its meso and racemic forms by Craig's partition method. Chemische Berichte 91, pp. 862-864.

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Abstract

The title compd. (285 mg., m. 185-220 Deg) was put through a 24-tube Craig app. using the solvent system 28:12:40 2% sq. HClMeOH-CHCl3, which gave a vol. ratio of the phases of 1.6. Most of component A (106 mg., m. 174-6 Deg) remained in the first 2 tubes; most of component B (168 mg., m. 214-16 Deg) was found in tubes 5 to 17 with a max. concn. in tube 11. By analogy with other stereoisomeric alpha ,alpha '-diphenylethylenediamines, it is concluded that A is racemic and B is meso.

Item Type:

Article

Additional information (public):

CAN 52:103991 10E Organic Chemistry: Benzene Derivatives 4169-62-4P Role: SPN (Synthetic preparation), PRP (Properties), PREP (Preparation) (The separation of N,N'-dibutyl-alpha ,alpha '-diphenylethylenediamine dihydrochloride into its meso and racemic forms by Craig's partition method); 96504-88-0P (Ethylenediamine, N,N'-dibutyl-1,2-diphenyl-, dihydrochloride) Role: PREP (Preparation) (sepn. of optical isomers by countercurrent distribution)

Institutions:

Chemistry and Pharmacy > Institute of Pharmacy > Retired Professors > Prof. Schönenberger

Identification Number:

Value	Type
1958:103991	Other

Keywords:

Resolution (by countercurrent extn.) Extraction (countercurrent, resolution of optical isomers by) Isomerism (diastereo-, sepn. by countercurrent extn.)

Subjects:

500 Science > 540 Chemistry & allied sciences

Status:

Published

Refereed:

Yes, this version has been refereed

Created at the University of Regensburg:

Owner:

Petra Gürster

Deposited On:

19 Nov 2010 10:58

Last Modified: