IMIDAZOLIDINE-2
3 Ethyl 5 (4 oxochroman 3 ylmethylene) 1,3 imidazolidine 2,4 dione
... The chemical reagents used in the synthesis were purchased from E. Merck (Darmstadt, Germany), Fluka (Buchs, Switzerland) and Aldrich (Milwaukee, MI, USA). A mixture of chromone-3-carbox- aldehyde (0.3 g, 1.72 mmol) and ...
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5 (4 Fluorobenzylidene)imidazolidine 2,4 dione
... of imidazolidine- 2,4-diones have intrinsic germicidal (Marton et ...and 2, respectively, where the dashed lines indicate inter- molecular N—H O hydrogen bonds (Table ...
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One Pot Synthesis of Imidazolidine 2 Thiones, Hydantoins and Thiohydantoins under Solvent Free and Grinding Conditions
... DOI:10.4236/oalib.1100705 2 October 2014 | Volume 1 | e705 step methods, one-pot, solid-phase and microwave-assisted approaches have been published ...of imidazolidine-2-thiones 3, hydantoins and ...
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N—H⋯S and N—H⋯O hydrogen bonding in tetra n butylammonium (imidazolidine 2 thione 2κS)dioxo 1κ2O di μ sulfido 1:2κ4S:S copper(I)tungstate(VI)
... and Cu atoms have tetrahedral and trigonal-planar coordina- tion, respectively. Two sulfide ligands bridge the two metal centres; tungsten is additionally coordinated by two terminal oxo ligands and copper by the ...
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5 (4 Hydroxyphenyl)imidazolidine 2,4 dione
... Data collection: SMART Bruker, 1997; cell refinement: SAINT Bruker, 1997; data reduction: SAINT; programs used to solve structure: SHELXS97 Sheldrick, 2008; programs used to refine struc[r] ...
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Crystal structure of 1′ (2 methylpropyl) 2,3 dihydrospiro[1 benzothiopyran 4,4′ imidazolidine] 2′,5′ dione
... The hydantoin ring in the structure is planar within the experimental limits with a maximum deviation of 0.012 (2) Å for N1 atom from the least-squares plane of the hydantoin ring. The N—C bong length values of ...
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Crystal structure of 1′ ethylspiro[chroman 4,4′ imidazolidine] 2′,5′ dione: a hydantoine derivative
... the imidazolidine ring is twisted about the C9A—N2A bond, while in molecule B this ring is flat ...the imidazolidine ring is inclined to the aromatic ring of the chroman unit by ...
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Crystal structure, Hirshfeld surface analysis and interaction energy and DFT studies of 5,5 diphenyl 1,3 bis(prop 2 yn 1 yl)imidazolidine 2,4 dione
... C C and H N/N H contacts (McKinnon et al., 2007) are illustrated in Fig. 6b–f, together with their relative contribu- tions to the Hirshfeld surface while details of the various contacts are given in Table 2. The ...
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Crystal structure of bis[(acetato κO)(imidazolidine 2 thione κS)bis(triphenylphosphane κP)silver(I)] di μ imidazolidine 2 thione κ4S:S bis[(imidazolidine 2 thione κS)bis(triphenylphosphane κP)silver(I)] diacetate acetonitrile disolvate tetrahydrate
... Silver(I) complexes containing S- or P-donor ligands have received much attention because of their potential applica- tions in biochemistry (Isab et al., 2010; Nawaz et al., 2011) and their luminescent properties ...
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3 (4 Bromophenyl) 1 butyl 5 [1 (2 chloro 6 methylphenyl) 1H tetrazol 5 yl]imidazolidine 2,4 dione
... The molecular structure is shown in Fig. 1. The terminal carbon of the butyl substituent is disordered between two positions, with occupancies that refine to 0.67 (3) for C14A and 0.33 (3) for C14B. As seen in Fig. ...
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Ab Initio Investigation of Physicochemical, Thermodynamical and Spectroscopic Characteristics of Hydantoin Structures
... or imidazolidine-2,4-dione was discovered by Bayer in 1861, a largeset of imidazolidine derivatives have been synthesizedshowing a wide range of biological activities like anticonvulsant, antischistosomal, ...
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Synthesis, characterization and biological activity evaluation of new pyridazines containing imidazolidine moiety
... This paper contained the synthesis of some new derivatives of pyridazine from the reaction of pyridazine-3,6-diol (1) with chloroacetyl chloride in chloroform with presence of potassium carbonate as catalyst to obtain: ...
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Chlorido(2,2′ {[2 (1 methyl 1H imidazol 2 yl κN3)imidazolidine 1,3 diyl κN]bis(methylene)}bis(1 methyl 1H imidazole κN3))copper(II) perchlorate
... bis(methylene)}bis(1-methyl-1H-imidazole), L: The new ligand L was synthesized by condensation reaction between N 1 ,N 2 -bis[(1-methyl-1H-imidazol-2-yl)methyl]ethane-1,2-di- amine (Neves et al., 1997) ...
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4,4′ Di tert butyl 2,2′ [imidazolidine 1,3 diylbis(methylene)]diphenol
... The imidazolidine ring adopts an envelope conformation, with C3 as the ...the imidazolidine nitrogen atoms with S(6) graph-set motifs (Bernstein et ...
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SYNTHESIS AND BIOLOGICAL ACTIVITY OF SOME NOVEL IMIDAZOLIDINE ANALOGUES AS POTENT ANTIDIABETIC AGENT
... ABSTRACT: Imidazolidine are five-member heterocyclic compounds having two nitrogens in the ...with imidazolidine to yield the respective ...type 2 diabetic ...
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2 Phenyl 1,3 bis(2 pyridylmethyl)imidazolidine
... (1975)]. The ring has a pseudo-mirror, which includes the phenyl ring through C3 and is orthogonal to the C1ÐC2 bond. All three substituents are in equatorial positions, and the pyridine rings are oriented in a syn ...
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Crystal structure of the di Mannich base 4,4′ dichloro 3,3′,5,5′ tetramethyl 2,2′ [imidazolidine 1,3 diylbis(methylene)]diphenol
... intramolecular O—H N hydrogen bonds between the phenolic hydroxy groups and imidazolidine N atoms. The two 3-chloro-6-hydroxy-2,4-dimethyl- benzyl groups are located in a cis orientation with respect to the ...
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Dichotomization: 2 × 2 (×2 × 2 × 2...) categories: infinite possibilities
... variables; 2) illustrate the potential effects of changing the cutoff on ORs and standard error; and 3) (re)propose a method for summarizing the results of analyses across plausible ...
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2′ (2 Thienylmethylidene) 2 hydroxybenzohydrazide
... The molecule is essentially planar, with an r.m.s. deviation of 0.0048 AÊ. An intermolecular OÐH O hydrogen bond is observed linking the hydroxyl H atom with the carbonyl group of an adjacent molecule. In addition, an ...
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2′ (2 Fluorobenzylidene) 2 hydroxybenzohydrazide
... 1999). 2-Fluorobenzaldehyde is an effective intermediate in producing fever-allaying, pain- relieving and tumor-preventing medicines (Donnell & Bennett, ...
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