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Journal articles on the topic 'Imidazolidine-2'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 April 2022

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1

Sultana, Razia, Tarlok S. Lobana, and Alfonso Castineiras. "Chemistry of heterocyclic-2-thiones: in situ generated 1-(4,5-dihydro-3-alkyl-imidazolidin-2-yl)-3-alkyl-imidazolidine-2-thione and triiodide form novel mixed valent CuI–II/CuII complexes." RSC Advances 5, no. 122 (2015): 100579–88. http://dx.doi.org/10.1039/c5ra20449f.

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Copper(i) iodide transforms N-n-butyl-imidazolidine-2-thione in air into 1-(4,5-dihydro-3-butyl-imidazolidin-2-yl)-3-butyl-imidazolidine-2-thione (L-NBu<sup>n</sup>) which formed novel complex, [Cu(κ<sup>2</sup>-N,S-L-NBu<sup>n</sup>)<sub>2</sub>](I<sub>3</sub>)<sub>2</sub>.

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2

Vaughan, Keith, Shasta Lee Moser, Reid Tingley, M. Brad Peori, and Valerio Bertolasi. "Triazene derivatives of (1,x-)diazacycloalkanes. Part VI. 3-({5,5-Dimethyl-3-[2-aryl-1-diazenyl]-1-imidazolidinyl}methyl)-4,4-dimethyl-1-[2-aryl-1-diazenyl]imidazolidines — Synthesis, characterization, and X-ray crystal structure." Canadian Journal of Chemistry 84, no. 10 (2006): 1294–300. http://dx.doi.org/10.1139/v06-091.

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Reaction of a series of diazonium salts with a mixture of formaldehyde and 1,2-diamino-2-methylpropane affords the 3-({5,5-dimethyl-3-[2-aryl-1-diazenyl]-1-imidazolidinyl}methyl)-4,4-dimethyl-1-[2-aryl-1-diazenyl]imidazolidines (1a–1f) in excellent yield. The products have been characterized by IR and NMR spectroscopic analysis, elemental analysis, and X-ray crystallography. The X-ray crystal structure of the p-methoxycarbonyl derivative (1c) establishes without question the connectivity of these novel molecules, which can be described as linear bicyclic oligomers with two imidazolidinyl group

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3

Lee, See, Ainnul Azizan, and Edward Tiekink. "1-(2-Hydroxyethyl)imidazolidine-2-thione." Molbank 2018, no. 4 (2018): M1035. http://dx.doi.org/10.3390/m1035.

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1-(2-Hydroxyethyl)imidazolidine-2-thione (1) was obtained as a product from an in situ reaction between N-(2-hydroxyethyl)ethylenediamine, carbon disulfide, potassium hydroxide, and di(4-fluorobenzyl)tin dichloride. Compound 1 was characterized by IR, UV, 1H, 13C{1H}, and 2D (COSY, NOESY, HSQC, and HMBC) NMR spectroscopies. The cyclic molecular structure was confirmed by single crystal X-ray crystallography which showed the five-membered ring to be non-planar and the π-electron density to be localized over the CN2S chromophore. In the crystal, thioamide–N–H…O(hydroxy) and hydroxy–O–H…S(thione)

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4

Wazeer, Mohamed I. M., Anvarhusein A. Isab, and Ali El-Rayyes. "Solid state NMR study of 1,3imidazolidine-2-thione, 1,3-imidazolidine-2-selenone and some of their N-substituted derivatives." Spectroscopy 18, no. 1 (2004): 113–19. http://dx.doi.org/10.1155/2004/309130.

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Solid‒state NMR spectra were recorded for 1,3-imidazolidine-2-thione, 1,3-imidazolidine-2-selenone and some of their N-substituted derivatives. Spinning side-bands of thione and selenone carbons were analysed to yield chemical shift anisotropies for these carbons. The NMR spectrum of imidazolidine-2-thione (Imt) showed some evidence for the presence of thiol tautomer. Molecular computations were carried out for Imt and its N-methyl derivative to yield relative energies of various tautomers.

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5

Bjernemose, Jens K., Christine J. McKenzie, and Martin N. Mortensen. "2-Phenyl-1,3-bis(2-pyridylmethyl)imidazolidine." Acta Crystallographica Section E Structure Reports Online 59, no. 7 (2003): o1017—o1018. http://dx.doi.org/10.1107/s1600536803013394.

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6

Żesławska, Ewa, Ewa Szymańska, Wojciech Nitek, and Jadwiga Handzlik. "Crystallographic studies of piperazine derivatives of 3-methyl-5-spirofluorenehydantoin in search of structural features of P-gp inhibitors." Acta Crystallographica Section C Structural Chemistry 77, no. 8 (2021): 467–78. http://dx.doi.org/10.1107/s2053229621006756.

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5-Spirofluorenehydantoin derivatives show efflux modulating, cytotoxic and antiproliferative effects in sensitive and resistant mouse T-lymphoma cells. In order to extend the knowledge available about the pharmacophoric features responsible for the glycoprotein P (P-gp) inhibitory properties of arylpiperazine derivatives of 3-methyl-5-spirofluorenehydantoin, we have performed crystal structure analyses for 1-[3-(3′-methyl-2′,4′-dioxospiro[fluorene-9,5′-imidazolidin]-1′-yl)propyl]-4-phenylpiperazine-1,4-diium dichloride monohydrate, C29H32N4O2 2+·2Cl−·H2O (1), 3′-methyl-1′-{3-[4-(4-nitrophenyl)

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7

Sun, Na-Bo, Guo-Wu Rao, and Jian-Bo Chu. "1-{[3-(2-Chloro-3,3,3-trifluoroprop-1-enyl)-2,2-dimethylcyclopropan-1-yl]carbonyl}-3-(methylsulfonyl)imidazolidin-2-one." Acta Crystallographica Section E Structure Reports Online 68, no. 6 (2012): o1744. http://dx.doi.org/10.1107/s1600536812021216.

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In the title molecule, C13H16ClF3N2O4S, the imidazolidine ring is approximately planar, the largest deviation from this plane being 0.025 (3) Å. The cyclopropane ring forms a dihedral angle of 64.1 (2)° with the imidazolidine ring. In the crystal, C—H...O hydrogen bonds are observed.

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8

Umar, M. Naveed, M. Nawaz Tahir, Mohammad Shoaib, Akbar Ali, and Imran Khan. "1,3-Bis(1-phenylethyl)imidazolidine-2-thione." Acta Crystallographica Section E Structure Reports Online 68, no. 4 (2012): o1188. http://dx.doi.org/10.1107/s160053681201224x.

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The complete molecule of the title compound, C19H22N2S, is generated by crystallographic twofold symmetry with the C=S group lying on the rotation axis. The imidazolidine ring adopts a flattened twist conformation. The dihedral angle between the asymmetric part of the imidazolidine-2-thione fragment and the benzene ring is 89.49 (17)°.

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9

Raper, Eric S., John D. Wilson та William Clegg. "[Bis{bis(imidazolidine-2-thione)-μ2-(imidazolidine-2-thione)copper(I)}] diperchlorate: synthesis and crystal structure". Inorganica Chimica Acta 194, № 1 (1992): 51–55. http://dx.doi.org/10.1016/s0020-1693(00)85822-3.

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10

Shtamburg, Vasiliy G., Andrey A. Anishchenko, Victor V. Shtamburg, et al. "Synthesis and crystal structure of new imidazolidine-2,4-dione and imidazolidin-2-one derivatives." Mendeleev Communications 18, no. 2 (2008): 102–4. http://dx.doi.org/10.1016/j.mencom.2008.03.018.

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11

Jiang, Kai, Xiao-Qiang Wang, Li-Ya Wang, and Yu-Fang Wang. "4,4,5,5-Tetramethyl-2-(2-thienyl)imidazolidine-1,3-diol." Acta Crystallographica Section E Structure Reports Online 62, no. 11 (2006): o4814—o4815. http://dx.doi.org/10.1107/s1600536806039687.

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12

Shaheen, Muhammad Ashraf, Muhammad Nawaz Tahir, Sarwat Sabir та ін. "Synthesis and crystal structures of bis(imidazolidine-2-thione-κS)bis(thiocyanato-κS)mercury(II) and bis(cyanido)bis(μ2-imidazolidine-2-thione-κS)mercury(II).Hg(CN)2". Zeitschrift für Naturforschung B 72, № 9 (2017): 671–76. http://dx.doi.org/10.1515/znb-2017-0080.

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AbstractTwo mercury(II) complexes containing imidazolidine-2-thione (Imt) and thiocyanate or cyanide ligands, [Hg(Imt)2(SCN)2] (1) and [Hg(Imt)2(CN)2].Hg(CN)2(2), have been prepared and characterized by IR and NMR spectroscopy and X-ray crystallography. In compound1, the mercury atom is located on a two-fold rotation axis and is coordinated to two thione sulfur atoms of imidazolidine-2-thione (Imt) and to two sulfur atoms of thiocyanate in a distorted tetrahedral mode with the S-Hg-S bond angles in the range of 98.96(3)–148.65(6)°. In2, the mercury atom is hexa-coordinated having a distorted o

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13

Gupta, Vivek, Vedhagiri Karthik та Ganapathi Anantharaman. "Labile dioxy-functionalised zwitterionic imidazolinium salt: access to zwitterionic and neutral imidazolidin-2-ylidene derivatives and π-acceptor properties of imidazolidine-2-selones". RSC Advances 5, № 107 (2015): 87888–96. http://dx.doi.org/10.1039/c5ra15333f.

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14

Zhou, Yuxuan, Fanghui Ma, Ping Lu, and Yanguang Wang. "Preparation of spiro[imidazolidine-4,3′-indolin]-2′-imines via copper(i)-catalyzed formal [2 + 2 + 1] cycloaddition of 3-diazoindolin-2-imines and triazines." Organic & Biomolecular Chemistry 17, no. 39 (2019): 8849–52. http://dx.doi.org/10.1039/c9ob01767d.

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15

Jiang, Kai, Jiu-Li Chang, Li-Ya Wang, Lu-Fang Ma, and Yu-Fang Wang. "4,4,5,5-Tetramethyl-2-(thiazol-2-yl)imidazolidine-1,3-diol." Acta Crystallographica Section E Structure Reports Online 61, no. 10 (2005): o3430—o3432. http://dx.doi.org/10.1107/s1600536805029910.

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16

Umar, M. Naveed, M. Nawaz Tahir, Mohammad Shoaib, Akbar Ali, and Ziauddin. "1,3-Bis(1-cyclohexylethyl)imidazolidine-2-thione." Acta Crystallographica Section E Structure Reports Online 68, no. 3 (2012): o743. http://dx.doi.org/10.1107/s1600536812006150.

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17

Shivachev, Boris, Rosica Petrova, Petja Marinova, Neyko Stoyanov, Anife Ahmedova, and Mariana Mitewa. "Four cycloalkanespiro-4′-imidazolidine-2′,5′-dithiones." Acta Crystallographica Section C Crystal Structure Communications 62, no. 4 (2006): o211—o215. http://dx.doi.org/10.1107/s0108270106003489.

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18

Li, Dongmei, Zhongzhen Tian, Gaolei Wang, Peifeng Wei, and Yanming Zhang. "(E)-1-(2,2-Dimethoxyethyl)-2-(nitromethylidene)imidazolidine." Acta Crystallographica Section E Structure Reports Online 66, no. 9 (2010): o2216. http://dx.doi.org/10.1107/s1600536810030266.

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19

Merniz, Salah, Mahiedine Mokhtari, Hénia Mousser, Lahcène Ouahab та Abdelhamid Mousser. "Pentacarbonyl(imidazolidine-2-thione-κS)tungsten(0)". Acta Crystallographica Section E Structure Reports Online 66, № 6 (2010): m629—m630. http://dx.doi.org/10.1107/s1600536810016314.

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20

Liu, Xiao-Wei, and Liang-Zhong Xu. "2-[1-(1-Phenylethyl)imidazolidin-2-ylidene]malononitrile." Acta Crystallographica Section E Structure Reports Online 68, no. 4 (2012): o1203. http://dx.doi.org/10.1107/s1600536812010823.

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In the title compound, C14H14N4, the imidazolidine moiety is nearly planar, having an N—C—N—C torsion angle of 4.43 (3)°. The crystal structure is characterized by classical N—H...N hydrogen bonds, which form inversion dimers.

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21

Friedrichsa, Friedrichsa, and Peter G. Jones. "Secondary Interactions in Gold(I) Complexes with Thione Ligands, 3. Three Ionic Dimesylamides [1, 2]." Zeitschrift für Naturforschung B 59, no. 11-12 (2004): 1429–37. http://dx.doi.org/10.1515/znb-2004-11-1210.

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Three structures of the form bis(thione)gold(I) di(methanesulfonyl)amide [thione = imidazolidine- 2-thione, 1; 1-methyl-imidazolidine-2-thione, 2; thiazolidine-2-thione, 3] were determined; all crystallize with one formula unit in the asymmetric unit. Each N-H hydrogen bond donor forms one classical two-centre hydrogen bond with an anion acceptor. Compound 1 thereby forms a complex layer structure with a layer thickness of 10.17 Å ; the packing may be analysed in terms of thinner subunit layers consisting of interlinked, hydrogen-bonded chains and rings. Compound 2 forms a chain structure cons

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22

Rivera, Augusto, Jicli José Rojas, Jaime Ríos-Motta, and Michael Bolte. "Crystal structure of 1,1′-[imidazolidine-1,3-diylbis(methylene)]bis(naphthalen-2-ol)." Acta Crystallographica Section E Crystallographic Communications 71, no. 3 (2015): 258–60. http://dx.doi.org/10.1107/s2056989015002078.

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The crystal structure of the title compound, C25H24N2O2, at 173 K has monoclinic (C2/c) symmetry. The molecule is located on a crystallographic twofold rotation axis with only half a molecule in the asymmetric unit. The imidazolidine ring adopts a twist conformation, with a twist about the ring C—C bond. The crystal structure shows theanticlinaldisposition of the two (2-hydroxynaphthalen-1-yl)methyl substituents of the imidazolidine ring. The structure displays two intramolecular O—H...N hydrogen bonds, each forming anS(6) ring motif.

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23

Iskenderov, Turganbay S., Irina A. Golenya, Elźbieta Gumienna-Kontecka, Igor O. Fritsky, and Elena V. Prisyazhnaya. "(2RS)-3-Hydroxy-2-methyl-2-(2-pyridyl)imidazolidine-4-one." Acta Crystallographica Section E Structure Reports Online 65, no. 9 (2009): o2123—o2124. http://dx.doi.org/10.1107/s1600536809030840.

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24

Ji, Zhi Xiang, and Peng Fei Li. "Crystal Structure and Catalytic Activity of A Novel Cd(II) Coordination Polymer Formed by Dicarboxylic Ligand." Bulletin of Chemical Reaction Engineering & Catalysis 13, no. 2 (2018): 220. http://dx.doi.org/10.9767/bcrec.13.2.1178.220-226.

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A new Cd(II) coordination polymer, {[Cd3(L)2(DMF)2(H2O)2]·H2O}n (H2L = 1,3-bisbenzyl-2-imidazolidine-4,5-dicarboxylic acid) was synthesized by one-pot synthesis method from 1,3-bisbenzyl-2-imidazolidine-4,5-dicarboxylic acid, NaOH, DMF, and Cd(NO3)2·4H2O. Its structure was determined by elemental analysis and single crystal X-ray diffraction. Structural analysis shows that three Cd(II) ions are all six-coordinated with four oxygen atoms of four 1,3-bisbenzyl-2-imidazolidine-4,5-dicarboxylate ligands and two O atoms from two DMF molecules (Cd1) or two oxygen atoms of two coordinated H2O molecul

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25

Alizadeh, Mohammad Hasan, and Irandokht Mohammadi Zonoz. "12-Tungstophosphoric acid–1,1′-methylenebis(imidazolidine-2,4-dione)–imidazolidine-2,4-dione–water (2/1/4/21.5)." Acta Crystallographica Section E Structure Reports Online 66, no. 7 (2010): m839. http://dx.doi.org/10.1107/s160053681002310x.

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26

Mietlarek-Kropidłowska, Anna, Jaroslaw Chojnacki, and Barbara Becker. "1,3-Dibenzylimidazolidine-2-thione." Acta Crystallographica Section E Structure Reports Online 68, no. 8 (2012): o2521. http://dx.doi.org/10.1107/s1600536812032655.

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In the title compound, C17H18N2S, the imidazolidine ring adopts a twisted conformation. In the crystal, molecules are linked by slipped π–π interactions between the benzene rings of neighbouring molecules [centroid-to-centroid distance = 3.903 (2) Å].

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27

Zhao, Fei, Yuexing Li, Yang Wang, Wen-Xiong Zhang, and Zhenfeng Xi. "Selective synthesis of (Z)-2-enynyl-2-hydroxy-imidazolidine-4,5-diones via Cu(i)-mediated multicomponent coupling of terminal alkynes, carbodiimides and oxalyl chloride." Org. Biomol. Chem. 12, no. 21 (2014): 3336–39. http://dx.doi.org/10.1039/c4ob00185k.

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(Z)-2-Enynyl-2-hydroxy-imidazolidine-4,5-diones are synthesized via Cu(i)-mediated (Z)-selective geminal coupling among two terminal alkynes, carbodiimides, and oxalyl chloride. Further transformation is explored.

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28

De Simone, C. A., M. A. Pereira, C. Luu-Duc, et al. "3-Benzyl-5-(2-fluorobenzylidene)imidazolidine-2,4-dione." Acta Crystallographica Section C Crystal Structure Communications 52, no. 11 (1996): 2771–72. http://dx.doi.org/10.1107/s0108270196007317.

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29

Friedrichs, S., and P. G. Jones. "Bis(imidazolidine-2-thione)gold(I) diiodoaurate(I)." Acta Crystallographica Section C Crystal Structure Communications 55, no. 10 (1999): 1625–27. http://dx.doi.org/10.1107/s0108270199008148.

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30

Zhivotova, T. S., A. M. Gazaliev, S. D. Fazylov, Z. K. Aitpaeva, and D. M. Turdybekov. "Synthesis and structure of some imidazolidine-2-thiones." Russian Journal of Organic Chemistry 42, no. 3 (2006): 448–50. http://dx.doi.org/10.1134/s1070428006030183.

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31

Al-Arfaj, A. R., J. H. Reibenspies, A. A. Isab, and M. S. Hussain. "Dichlorobis(1,3-imidazolidine-2-thione-S)cadmium(II)." Acta Crystallographica Section C Crystal Structure Communications 54, no. 1 (1998): 51–53. http://dx.doi.org/10.1107/s0108270197012092.

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32

Yiğit, Beyhan, Murat Yiğit, İsmail Özdemir, Bekir Çetinkaya, and Engin Çetinkaya. "2-(4-Pyridyl)-1,3-di(4-picolyl)imidazolidine." Molbank 2010, no. 1 (2010): M649. http://dx.doi.org/10.3390/m649.

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33

Zhang, Yong, and Lei Teng. "1-[5-(Dimethylamino)-1-naphthylsulfonyl]imidazolidine-2-thione." Acta Crystallographica Section E Structure Reports Online 66, no. 8 (2010): o2181. http://dx.doi.org/10.1107/s1600536810029788.

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34

Komarova, T. N., A. S. Nakhmanovich, and V. B. Modonov. "The reaction of imidazolidine-2-thione with acylacetylenes." Bulletin of the Academy of Sciences of the USSR Division of Chemical Science 34, no. 3 (1985): 635–37. http://dx.doi.org/10.1007/bf00947741.

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35

Friedrichs, Steffi, and Peter G. Jones. "Secondary Interactions in Gold(I) Complexes with Thione Ligands. 2. Three Ionic Camphorsulfonates with Z’ = 2 [1]." Zeitschrift für Naturforschung B 59, no. 7 (2004): 793–9. http://dx.doi.org/10.1515/znb-2004-0708.

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All three structures of the form bis(thione)gold(I) camphor-10-sulfonate [thione = imidazolidine-2-thione, 1; 1-methyl-imidazolidine-2-thione, 2; thiazolidine-2-thione, 3] crystallize in chiral space groups with Z′ = 2; local inversion symmetry of the cationic assemblies (less pronounced for 3) provides some rationalisation for this. The basic structural units are accounted for in terms of classical hydrogen bonds, leading to rings involving ion pairs for 1 and 2, but to infinite chains of anions and cations for 3. Neighbouring ion pairs in 1 are joined by further classical hydrogen bonds, in

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36

El-Sharief, Marwa A. M. Sh, Samir Y. Abbas, Medhat A. Zahran, Yehia A. Mohamed, Ahmed Ragab, and Yousry A. Ammar. "New 1,3-diaryl-5-thioxo-imidazolidin-2,4-dione derivatives: synthesis, reactions and evaluation of antibacterial and antifungal activities." Zeitschrift für Naturforschung B 71, no. 8 (2016): 875–81. http://dx.doi.org/10.1515/znb-2016-0054.

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AbstractNew cyanothioformamide derivative 1 was prepared by treatment of 3,5-dichlorophenyl isothiocyanate with potassium cyanide at room temperature. Cycloaddition of cyanothioformamide 1 with phenyl isocyanate as electrophile furnished the corresponding imidazolidine 2. Imine hydrolysis of 2 with ethanolic HCl produced the corresponding 4-thioxo-2,5-imidazolidinedione 3. This compound was used as key synthon for the preparation of a wide variety of new substituted imidazole compounds. Condensation of 3 with different types of hydrazine derivatives furnished new series of hydrazone 4a, b, thi

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37

Lobana, Tarlok S., Jaspreet K. Aulakh, Heena Sood, et al. "Synthesis, structures and antimicrobial activity of copper derivatives of N-substituted imidazolidine-2-thiones: unusual bio-activity against Staphylococcus epidermidis and Enterococcus faecalis." New Journal of Chemistry 42, no. 12 (2018): 9886–900. http://dx.doi.org/10.1039/c8nj00206a.

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38

Arai, Takayoshi, Chihiro Tokumitsu, Tomoya Miyazaki, Satoru Kuwano, and Atsuko Awata. "Catalytic asymmetric [3 + 2]-cycloaddition for stereodivergent synthesis of chiral indolyl-pyrrolidines." Organic & Biomolecular Chemistry 14, no. 5 (2016): 1831–39. http://dx.doi.org/10.1039/c5ob02278a.

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The stereochemical divergent synthesis of indolyl-pyrrolidines was accomplished using an imidazoline-aminophenol (IAP)–Ni(OAc)<sub>2</sub> complex and a bis(imidazolidine)pyridine (PyBidine)–Cu(OTf)<sub>2</sub> complex.

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39

Sigachev, Andrey S., Angelina N. Kravchenko, Elena Yu Maksareva, Boris V. Lozhkin, Konstantin A. Lyssenko та Nina N. Makhova. "The first synthesis of assemblies of imidazolidine rings by α-ureidoalkylation of imidazolidin-2-one with 4,5-dihydroxyimidazolidin-2-ones". Mendeleev Communications 16, № 2 (2006): 80–82. http://dx.doi.org/10.1070/mc2006v016n02abeh002254.

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40

Todorov, Petar, Rosica Petrova, Emilia Naydenova, and Boris Shivachev. "Structure, conformation and hydrogen bonding of two amino-cycloalkanespiro-5-hydantoins." Open Chemistry 7, no. 1 (2009): 14–19. http://dx.doi.org/10.2478/s11532-008-0087-3.

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AbstractThe crystal structures of 3-amino-cycloheptanespiro-4′-imidazolidine-2′,5′-dione (I) {systematic name: 3-amino-1,3-diazaspiro[4.6] undecane-2,4-dione} and 3-amino-cyclooctanespiro-4′-imidazolidine-2′,5′-dione (II) {systematic name: 3-amino-1,3-diazaspiro[4.7] dodecane-2,4-dione}, have been determined. In both compounds the polar hydantoin groups cause molecules to aggregate via N-H...O and N-H...N interactions, forming a layer structure, in which the cycloalkane rings project outwards from the central, more polar, region. The observed molecular structure is compared with that calculate

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41

Rivera, Augusto, Luz Stella Nerio, and Michael Bolte. "6,6′-Dimethyl-2,2′-[imidazolidine-1,3-diylbis(methylene)]diphenol." Acta Crystallographica Section E Structure Reports Online 70, no. 3 (2014): o243. http://dx.doi.org/10.1107/s1600536814002128.

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In the title compound, C19H24N2O2, a di-Mannich base derived from 2-methylphenol and 1,3,6,8-tetraazatricyclo[4.4.1.13,8]dodecane, the imidazolidine ring adopts a twist conformation, with a twist about the ring N—C bond [C—N—C—C torsion angle = −44.34 (14)°]. The two 2-hydroxy-3-methylbenzyl groups are located intranspositions with respect to the imidazolidine fragment. The structure displays two intramolecular O—H...N hydrogen bonds, which each form anS(6) ring motif. In the crystal, the molecules are linked by weak C—H...O interactions with a bifurcated acceptor, forming a three-dimensional

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Zhao, Hong-Wu, Xiao-Qin Chen, Zhao Yang, et al. "Highly diastereoselective synthesis of imidazolidine-dispirooxindoles via three-component [3 + 2] cycloadditions of isatins, 2-(aminomethyl)pyridine and isatin-based imines." RSC Advances 5, no. 125 (2015): 103116–22. http://dx.doi.org/10.1039/c5ra21995g.

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In the presence of Et<sub>3</sub>N, the [3 + 2] cycloaddition of isatins, 2-(aminomethyl)pyridine and isatin-based imines proceeded readily, and furnished novel imidazolidine-dispirooxindoles in up to 84% yield with up to >99 : 1 diastereoselectivity.

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Di Carmine, Graziano, Daniele Ragno, Carmela De Risi, et al. "Synthesis of functionalized imidazolidine-2-thiones via NHC/base-promoted aza-benzoin/aza-acetalization domino reactions." Org. Biomol. Chem. 15, no. 41 (2017): 8788–801. http://dx.doi.org/10.1039/c7ob02259j.

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Ghandour, Ismail, Abdelouahed Bouayad, Tuncer Hökelek, et al. "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." Acta Crystallographica Section E Crystallographic Communications 75, no. 7 (2019): 951–56. http://dx.doi.org/10.1107/s2056989019007801.

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The title compound, C21H16N2O2, consists of an imidazolidine unit linked to two phenyl rings and two prop-2-yn-1-yl moieties. The imidazolidine ring is oriented at dihedral angles of 79.10 (5) and 82.61 (5)° with respect to the phenyl rings, while the dihedral angle between the two phenyl rings is 62.06 (5)°. In the crystal, intermolecular C—HProp...OImdzln (Prop = prop-2-yn-1-yl and Imdzln = imidazolidine) hydrogen bonds link the molecules into infinite chains along the b-axis direction. Two weak C—HPhen...π interactions are also observed. The Hirshfeld surface analysis of the crystal structu

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Tomkowiak, Hanna, and Andrzej Katrusiak. "Compression of Hydrogen-Bonded Layers in Imidazolidine-2-thione." Crystal Growth & Design 19, no. 1 (2018): 285–90. http://dx.doi.org/10.1021/acs.cgd.8b01363.

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Sharaf, Mohie A. F., El-emam H. M. Ezat, and Hamdy A. A. Hammouda. "Reactions with 4,5-DI (p-Chlorophenyl)Imidazolidine-2-Thione." Phosphorus, Sulfur, and Silicon and the Related Elements 92, no. 1-4 (1994): 19–27. http://dx.doi.org/10.1080/10426509408021453.

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Lo, Chi-Chu, and Ming-Hsun Ho. "Determination of imidazolidine-2-thione (ethylenethiourea) in ethylenebisdithiocarbamate formulations." Pesticide Science 37, no. 3 (1993): 247–51. http://dx.doi.org/10.1002/ps.2780370303.

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Nimthong-Roldán, Arunpatcha, Janejira Ratthiwan, Sawanya Lakmas та Yupa Wattanakanjana. "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". Acta Crystallographica Section E Crystallographic Communications 72, № 4 (2016): 444–47. http://dx.doi.org/10.1107/s205698901600308x.

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In the title compound, [Ag2(C3H6N2S)4(C18H15P)2](C2H3O2)2·[Ag(C2H3O2)(C3H6N2S)(C18H15P)2]2·2C2H3N·4H2O, the AgIion in the mononuclear neutral complex exhibits a distorted tetrahedral environment with coordination by two P atoms from triphenylphosphane (PPh3) ligands, one S atom of an imidazolidine-2-thione (etu) ligand and one O atom of an acetate anion. The binuclear cationic complex comprises two inversion-related [Ag(C3H6N2S)2(C18H15P)] units with AgIions bridged by two S atoms from etu ligands forming a four-membered Ag–S–Ag–S ring. Each AgIion is coordinated by a P atom of a PPh3ligand, t

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Wang, Xiaonan, Yuan Gao, Zhonglin Wei, et al. "An enantioselective aza-Henry reaction of trifluoromethyl ketimines catalyzed by phase-transfer catalysts." Organic Chemistry Frontiers 6, no. 18 (2019): 3269–73. http://dx.doi.org/10.1039/c9qo00850k.

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Bekö, Sándor L., Silke D. Thoms, Martin U. Schmidt, and Michael Bolte. "Tizanidine and tizanidine hydrochloride: on the correct tautomeric form of tizanidine." Acta Crystallographica Section C Crystal Structure Communications 68, no. 1 (2011): o28—o32. http://dx.doi.org/10.1107/s0108270111052012.

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A crystallization series of tizanidine hydrochloride, used as a muscle relaxant for spasticity acting centrally as an α2-adrenergic agonist, yielded single crystals of the free base and the hydrochloride salt. The crystal structures of tizanidine [systematic name: 5-chloro-N-(imidazolidin-2-ylidene)-2,1,3-benzothiadiazol-4-amine], C9H8ClN5S, (I), and tizanidine hydrochloride {systematic name: 2-[(5-chloro-2,1,3-benzothiadiazol-4-yl)amino]imidazolidinium chloride}, C9H9ClN5S+·Cl−, (II), have been determined. Tizanidine crystallizes with two almost identical molecules in the asymmetric unit (r.m

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