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Зеленин, K. Н.; Alekseyev, V. V.; Pihlaja, Kalevi; Ovcharenko, V. V.

doi:10.1023/a:1015419321855

Cited by 17 publications

(10 citation statements)

References 41 publications

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“…(2CH 3 C (3)), 29.1 (CH 3 C (5) ), 53.1 (C (4) ), 61.8 (C (3) ), 99.8 (C (5) (2) ), 31.6 (C (6) ), 41.6 (CH 2 ), 62.5 (C-N), 69.7 (C (2) ), 173.6 (C (5) …”

Section: -(2-acetylhydrazine)-335-trimethylisoxazolidine (2amentioning

confidence: 99%

Synthesis and structure of 5-acylhydrazine-3,3,5-trimethylisoxazolidines

Еrshov¹,

Добродумов²,

Грибанов³

2004

Arkivoc

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“…(2CH 3 C (3)), 29.1 (CH 3 C (5) ), 53.1 (C (4) ), 61.8 (C (3) ), 99.8 (C (5) (2) ), 31.6 (C (6) ), 41.6 (CH 2 ), 62.5 (C-N), 69.7 (C (2) ), 173.6 (C (5) …”

Section: -(2-acetylhydrazine)-335-trimethylisoxazolidine (2amentioning

confidence: 99%

Synthesis and structure of 5-acylhydrazine-3,3,5-trimethylisoxazolidines

Еrshov¹,

Добродумов²,

Грибанов³

2004

Arkivoc

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“…In recent years, cyci1zation of open chain monothiosemicarbazones derived from β‐diketones have been reported to give pyrazolo derivatives . The cyclization processes of such compounds appeared to be very sensitive to the following variables: i) The pH and the nature of solvent, ii) The type of substituent (s) on the 1,3‐dicarbonyl compounds, and iii) The presence of M(II) acetate (M = Zn and Cd) in the medium .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, spectroscopic characterization, x‐ray crystal structures, thermal behavior and antimicrobial activity of copper(II) complexes with the novel (3,5‐dimethyl‐1H‐pyrazol‐1‐yl)(morpholin‐4‐yl)methanethione

El-Samanody

2018

Applied Organom Chemis

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The new (3,5-dimethyl-1H-pyrazol-1-yl)(morpholin-4-yl) methanethione ligand (L) and its copper(II) chelates Cu(L)Br 2 (1), Cu(L)Cl 2 (2) and [Cu(L) 2 OH(H 2 O)] ClO 4 ·1.5H 2 O (3) have been prepared. The coordination behavior of the ligand and the properties of the chelate compounds have been investigated by several physico-chemical techniques. The structures of (L), (1), and (2) have been characterized by x-ray single crystal diffraction. The ligand (L) crystalizes in the monoclinic P2 1 /n space group, a = 11.2632(4), b = 7.9959(2), c = 13.4337 (5) Å, α = 90, β = 106.3080 (14), γ = 90°. The copper(II) complexes (1) and (2) show a distorted square-planar geometries, with the ligand behaves as a bidentates NS chelating agent, coordinating to the copper(II) ions through the N atom of the pyrazolyl ring and the thione S atom, the third and fourth coordination sites are occupied by two halogen (Br − or Cl − ) ions. The ESR spectra of the prepared complexes are consistent with d (x2-y2) 1 ground state with axial symmetry.The thermal analysis data of the Cu(II) complexes (1 and 2) indicated that they have similar thermal degradation pathways. The complexes displayed antimicrobial activity against various pathogenic bacteria and fungi higher than that of the free organic ligand. The reaction of Cu(L)Cl 2 (2) with pyridine (py) in ethanol at room temperature does not form mixed-ligand complex, but leads to complete substitution of the ligand (L). The product of the substitution reaction was characterized based on elemental analyses and FT-IR measurements.

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“…1,2 The ring-chain transformations in the series of nitrogen-containing heterocycles allow rearranging the five-membered rings to the six-membered rings or reverse. In addition, various heteroatoms may be incorporated into the heterocyclic ring.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, various heteroatoms may be incorporated into the heterocyclic ring. 2 It is known, that 5-hydroxy-2-pyrazolines in the solutions can exist in equilibrium with acyclic tautomers (Figure 1). A ratio of both forms is determined by the following factors: solvent, the structure of 1,3-dicarbonyl component and the nature of the substituted hydrazine moiety.…”

Section: Introductionmentioning

confidence: 99%