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Boron chelates and boron‐metal chelates. XI. Constitution of Diphenylboron Chelates from Salicylaldehyde and amino compounds with functional groups
Author(s) -
Hohaus Eberhard
Publication year - 1983
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19835061122
Subject(s) - chelation , salicylaldehyde , chemistry , benzene , boron , polymer chemistry , amine gas treating , ring (chemistry) , inorganic chemistry , organic chemistry , schiff base
The chelates 1 — 5 were synthesized from salicylaldehyde, an amine component, and diphenylboric anhydride. Their elementary analytic and spectroscopic investigation showed that diphenylboron chelates were formed and not monophenylboron chelates (BC 6 H 5 group belongs to two chelate rings). The 1 H‐NMR spectroscopic investigation of the thermal decomposition products of 3 shows that, in addition to the release of the ethanol bonded by intermolecular hydrogen bridges, benzene is eliminated while the monophenylboron chelate is formed. By means of UV, IR, and NMR data ( 1 H, 13 C and 11 B) it has been proved that 1 — 3 and 5 show ring closures in the “salicylaldehyde” part of the azomethine chelating agent.