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 PCl2- and remaining SOCl-centre. The different isomeric forms of the mono-, bis-, tris-, and tetrakis(piperidino) derivatives are characterized by means of 31P NMR data. Application of 13C NMR leads in two cases to a structure assignment.
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