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'Aminolysis' in keywords Facet   Publication Year 1978  [X]
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1978[X]
1Author    H. H. Baalmann, R. Keizer, J. C. Van De Grampel, C. KrukRequires cookie*
 Title    Derivatives of eis-NPC12(NS0C1)2 and (NPC12)2NS0C1, Part IX [1] Substitution Reactions of eis-NPC12(NS0C1)2 with Piperidine  
 Abstract    Aminolysis of cis-NPCl2(NSOCl)2 by piperidine in acetonitrile at room temperature proceeds via a non-geminal substitution pattern. During the first substitution step the reactivity of a SOCl-centre appears to be greater than that of a PCl2-centre. The second and third substitution step successively take place at the PC12-and remaining SOCl-centre. The different isomeric forms of the mono-, bis-, tris-, and tetrakis(piperidino) derivatives are characterized by means of 31 P NMR data. Application of 13 C NMR leads in two cases to a structure assignment. 
  Reference    Z. Naturforsch. 33b, 959—963 (1978); received June 26 1978 
  Published    1978 
  Keywords    Aminolysis, Reaction Pattern, Structure Assignment 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0959.pdf 
 Identifier    ZNB-1978-33b-0959 
 Volume    33 
2Author    Volker Böhmer, Klaus WörsdörferRequires cookie*
 Title    Nachbargruppeneffekte bei der Aminolyse von Estern, II Die Aminolyse von 2-(2-Hydroxybenzyl)phenylacetaten Neighboring Group Effects in the Aminolysis of Esters, II The Aminolysis of 2-(2-Hydroxybenzyl)phenylacetates  
 Abstract    The aminolysis of 2-(2-hydroxybenzyl)phenyl acetates with w-butylamine in dioxane is much faster than for the corresponding 2-(2-methoxybenzyl)phenyl acetates or 2-methyl-phenyl acetates. The kinetic results can be explained by two equivalent mechanisms. Both of them include the formation of a l:l-complex between 2-(2-hydroxybenzyl)phenyl acetate and n-butylamine which is formed in an equilibrium. The reaction of this complex according to a second order rate law seems to be more probable than the reaction of the free ester according to a third order rate law. 
  Reference    Z. Naturforsch. 33b, 439—449 (1978); eingegangen am 30. Dezember 1977 
  Published    1978 
  Keywords    Kinetics, Aminolysis, Aprotic Solvent, Neighboring Group Effects, 2 -(2 -Hy droxybenzy 1 )phenylacetates 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0439.pdf 
 Identifier    ZNB-1978-33b-0439 
 Volume    33