Nucleophilic Addition of Aliphatic Diamines NH2(CH2)nNH2 (n=6, 9) to Nitrilium Derivatives of the closo-Decaborate Anion [2-B10H9NCR]- (R = CH3, C2H5, nC3H7)

The reaction of a number of nitrilium derivatives of the closo-decaborate anion with hexamethylene- and nonamethylenediamine has been studied. It has been shown that the process proceeds with the functionalization of both amino groups of the nucleophile to form amidines of the type (Bu4N)(2)[B10H9NH=C(R)NH (CH2)(n)NH(R)C=NHB10H9] (R = CH3, C2H5, (C3H7)-C-n; n = 6, 9). Target compounds have been characterized by high resolution multinuclear NMR and ESI mass spectrometry.

Automated summary

The reaction between several nitrilium derivatives and hexamethylene- and nonamethylenediamine of the closo-decaborate anion has been investigated. The process involves the functionalization of the amino groups in the nucleophile, resulting in amidines formation.