Schönenberger, Helmut and Thies, Heinrich and Zeller, A. and Borah, K. (1961) The influence of manganese(II) chloride on the reaction between Grignard compounds and Schiff bases. Naturwissenschaften 48, pp. 129-130.
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The reaction of benzylidenebutylamine with iso-PrMgI gave alpha -phenyl-alpha -butylamino-beta -methylpropane and small amts. of benzylbutylamine. In the presence of MnCl2, meso- and dl-N,N'-dibutyl-alpha ,alpha -diphenylethylenediamine were formed as further by-products. The yield of dimeric by-product was strongly dependent on the type of halogen in the Grignard compd. Thus, in the presence of 2.5 mole-% MnCl2, the total yield of dimeric product increased according to the sequence I < Br < Cl. The ratio of dl- to meso-form increased in the same sequence from 1.1 to 1.4 to 8.3.
|Additional information (public):||CAN 55:99167 10E Organic Chemistry: Benzene Derivatives 4169-62-4 (Derived from data in the 6th Collective Formula Index (1957-1961); 7773-01-5 (Manganese chloride, MnCl2) (in Grignard reaction with Schiff bases); 1137-52-6P (Benzylamine, N-butyl-alpha -isopropyl-); 1165-52-2P (Ethylenediamine, N,N'-dibutyl-1,2-diphenyl-, meso-); 2403-22-7P (Benzylamine, N-butyl-); 2403-38-5P (Ethylenediamine, N,N'-dibutyl-1,2-diphenyl-, dl-) Role: PREP (Preparation) (prepn. of)|
|Institutions:||Chemistry and Pharmacy > Institute of Pharmacy > Retired Professors > Prof. Schönenberger|
|Keywords:||Schiff bases (Grignard reactions of) Grignard reaction (with Schiff bases)|
|Subjects:||500 Science > 540 Chemistry & allied sciences|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||19 Nov 2010 07:21|
|Last Modified:||19 Nov 2010 07:21|