bis-Bidenticity of 2,4-Dihydroxy-5-acetylacetophenone and Its Derivatives with Divalent Nickel and Copper

Co (II), Ni (II), and Cu (II) complexes of 4,6‐bis(2‐hydroxynaphthalen‐1‐yl)methyl‐ene)hydrazono)ethyl)benzene‐1,3‐diol: Synthesis, spectroscopic, biological, and theoretical studies

“…The methods in the literature were used to prepare 4,6-diacetylresorcinol (DAR) [65] and 4,6-bis (1-hydrazonoethyl)benzene-1,3-diol (NH 2 DAR). [16] The ligand, 4,6-bis(2-hydroxynaphthalen-1-yl)methylene) hydrazono)ethyl)benzene-1,3-diol; DHNAPH (Scheme 1), was synthesized by dropwise addition of NH 2 DAR S C H E M E 1 Synthesis of ligand (DHNAPH) and its metal complexes (1-3) (10 mmol/ethanol 30 ml) suspended in ethanol to an ethanolic solution of 2-hydroxy-1-naphthaldehyde (20 mmol). The mixture was heated under reflux for 2 h, and the ligand (DHNAPH) was filtered off, washed several times by hot ethanol, and dried to give a pure yellow product with m.p.…”

“…[8][9][10][11][12][13][14] The coordinating behavior of the di-carbonyl compound 4,6-diacetylresorcinol (2,4-dihydroxy-5-acetylacetophenone) (DAR) has been studied. [15][16][17][18][19] In addition, some symmetrical and asymmetrical Schiff bases, hydrazones, and other ligands [20][21][22][23][24][25][26][27][28][29][30][31][32][33] have been constructed from DAR. Complexation of these ligands with different metal ions gave polynuclear (monouclear, biuclear, and trinuclear) complexes, which showed variable biological applications.…”

Binuclear Co(II), Ni(II) and Cu(II) Complexes of a new Bis(tridentate) Hydrazone Ligand: Synthesis, Thermal, Spectroscopic, Biological, Molecular Docking and Theoretical Studies

“…The methods in the literature were used to prepare 4,6-diacetylresorcinol (DAR) [56] and 4,6bis(1-hydrazonoethyl)benzene-1,3-diol (NH2DAR) [12]. The ligand, 4,6-bis(2-hydroxynaphthalen-1yl)methylene)hydrazono)ethyl)benzene-1,3-diol (DHNAPH) was synthesized (Scheme 1) by dropwise addition of NH2DAR (10 mmol/ethanol 30 mL) suspended to ethanolic solution of 2-hydroxy-1naphthaldehyde (20 mmol).…”

“…The coordinating behavior of the di-carbonyl compound; 4,6-diacetylresorcinol (2,4dihydroxy-5-acetylacetophenone) (DAR) has been studied [11][12][13][14][15][16]. In addition, some symmetrical and asymmetrical Schiff bases, hydrazones and other ligands [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] have been constructed from DAR.…”

Association thermodynamic parameters for nano Cu(NO3)2·2.5H2O with ligands at different temperatures

“…Finally, it is a component in some ceramic glazes and metal patinas. [23][24][25][26] 4,6-Diacetylresorcinol and 4,6-bis(1-hydrazonoethyl) benzene-1,3-diol (Schemes 1 and 2) have been used as bis(bidentate) ligands towards transition metal ions (VO(IV), 27 Co(II), 28 Ni(II), 29 Cu(II) 28,29 and Ru(II) 30 ), alkaline earth metal ions (Mg(II), Ca(II), Sr(II) and Ba(II) 31 ) in addition to Ce(III) and UO 2 (VI) ions. 27 In addition, these organic compounds have been used to synthesize different polydentate ligands including ON, ONN and ONS-donor ligands, which used to obtain solid polynuclear complexes.…”