Dimeric boronates derived from the reaction of schiff bases and boronic acids

Abstract

A síntese one-pot de complexos diméricos de boro é descrita. Os compostos foram obtidos pela reação de bases de Schiff (ligantes tridentados) com ácido trans-β-fenilvinilborônico, ácido 3tiofeninoborônico e ácido metilborônico. A construção das estruturas diméricas é favorecida pela presença de ligações de coordenação N→B intramoleculares, resultando na formação de anéis heterociclicos de dez membros. A análise cristalográfica de raio X de um deles confirmou a natureza dimérica desses compostos. The one-pot synthesis of dimeric boron complexes is reported. The compounds were obtained by reaction of Schiff bases (tridentate ligands) with trans-β-phenylvinylboronic acid, 3thiopheneboronic acid and methylboronic acid. Building of the dimeric structures is favored by the presence of intramolecular N→B coordination bonds, resulting in the formation of ten-membered ring heterocycles. An X-ray crystallographic analysis for one of them confirmed the dimeric nature of these compounds.

Syntheses, silylation, characterization, and antimicrobial and antifertility activities of organoboron derivatives of some bioactive monofunctional bidentate semicarbazones

“…A sharp singlet appeared in the range 1.15-1.45 ppm with reference to methyl borate in the 11 B NMR spectra of all derivatives (1a-2e) which indicates the presence of tetracoordinated boron [30][31][32] atom in these derivatives.…”

Synthesis of New Ligands Containing Azomethine Group and Investigation of Antioxidant, Antiurease Activities

“…The geometrical structures of Schiff bases can give us an idea about the complexity of the complexes. The complexes obtained with Schiff bases having a more rigid structure are more likely to form a polymeric structure [7].…”

Synthesis and characterization of some new coordination compounds of boron with mixed azines

“…[1][2][3][4][5][6][7] Continuing earlier research [8][9][10][11][12][13] on biologically active complexes, an attempt has now been made to synthesize mixed azines derived from salicylaldehyde and hydrazine with aldehydes/ketones and their complexes with triisopropoxyborane. [1][2][3][4][5][6][7] Continuing earlier research [8][9][10][11][12][13] on biologically active complexes, an attempt has now been made to synthesize mixed azines derived from salicylaldehyde and hydrazine with aldehydes/ketones and their complexes with triisopropoxyborane.…”