Home Crystal structure of 2-(ethoxycarbonyl)-2-(2-nitro-1-phenylethyl)-3-oxopyrrolidinium chloride, C15H19N2O5Cl
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Crystal structure of 2-(ethoxycarbonyl)-2-(2-nitro-1-phenylethyl)-3-oxopyrrolidinium chloride, C15H19N2O5Cl

  • Nilay Bhatt , Marivale Samipillai , Sukant Kishore Das , Hendrik Gert Kruger , Thavendran Govender and Glenn E.M. Maguire EMAIL logo
Published/Copyright: February 9, 2016

Abstract

C15H19N2O5Cl, triclinic, P1̅ (no. 2), a = 8.2232(9) Å, b = 8.5833(10) Å, c = 12.5916(13) Å, β = 100.713(5)°, V = 833.39 Å3, Z = 2, Rgt(F) = 0.0331, wRref(F2) = 0.0870, T = 173 K.

CCDC no.:: 1407566

The crystal structure is shown in the figure. For clarity hydrogen atoms not involved in hydrogen bonds are omitted. Tables 13 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters.

Table 1

Data collection and handling.

Crystal:Colorless, block, size 0.19×0.21×0.22 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:2.55 cm−1
Diffractometer, scan mode:Nonius Kappa CCD diffractometer, 1.2° φ scans and ω scans
2θmax:55.76°
N(hkl)measured, N(hkl)unique:29079, 3956
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 3343
N(param)refined:217
Programs:OLEX2 [7], SHELX [8]
Table 2

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).

AtomSitexyzUiso
H(1)2i0.153(2)0.474(2)0.411(2)0.038(4)
H(2)2i−0.012(2)0.476(2)0.345(1)0.033(4)
H(1A)2i0.18110.73860.43930.039
H(1B)2i0.07470.72150.31480.039
H(2A)2i0.34160.78830.28630.048
H(2B)2i0.42180.70570.38170.048
H(6A)2i−0.25030.42210.01000.044
H(6B)2i−0.36530.45710.09780.044
H(7A)2i−0.30250.14730.01190.090
H(7B)2i−0.48060.1981−0.01620.090
H(7C)2i−0.40690.17940.10640.090
H(8)2i0.23240.20950.18050.026
H(9A)2i0.43820.36930.34480.032
H(9B)2i0.31920.29390.41800.032
H(11)2i0.03100.19450.41370.038
H(12)2i−0.1941−0.01710.41150.045
H(13)2i−0.3098−0.22870.25210.043
H(14)2i−0.1981−0.23030.09450.041
H(15)2i0.0271−0.01940.09580.034
Table 3

Atomic displacement parameters (Å2).

AtomSitexyzU11U22U33U12U13U23
Cl(1)2i0.24337(4)0.47941(4)0.58480(2)0.0242(2)0.0428(2)0.0225(2)0.0037(1)0.0060(1)0.0046(1)
O(1)2i0.3818(1)0.5069(1)0.16648(8)0.0297(5)0.0402(6)0.0362(5)0.0066(4)0.0156(4)0.0130(4)
O(2)2i0.0185(1)0.3238(1)0.04996(8)0.0336(5)0.0517(6)0.0214(5)0.0130(5)0.0071(4)0.0016(4)
O(3)2i−0.1367(1)0.4202(1)0.16694(7)0.0233(4)0.0451(6)0.0232(4)0.0114(4)0.0044(4)0.0036(4)
O(4)2i0.4942(2)0.0941(2)0.4191(1)0.0776(9)0.0458(7)0.0420(6)0.0277(6)−0.0006(6)0.0181(5)
O(5)2i0.4218(1)0.0468(1)0.24075(9)0.0508(6)0.0412(6)0.0396(6)0.0242(5)0.0146(5)0.0081(5)
N(1)2i0.0985(1)0.4969(1)0.34737(9)0.0229(5)0.0253(5)0.0202(5)0.0056(4)0.0059(4)0.0031(4)
N(2)2i0.4272(1)0.1260(1)0.3338(1)0.0301(6)0.0273(6)0.0340(6)0.0078(5)0.0060(5)0.0105(5)
C(1)2i0.1594(2)0.6786(2)0.3605(1)0.0403(8)0.0218(6)0.0343(7)0.0067(5)0.0105(6)0.0016(5)
C(2)2i0.3230(2)0.6932(2)0.3196(1)0.0432(8)0.0266(7)0.0458(9)−0.0034(6)0.0165(7)0.0011(6)
C(3)2i0.2988(2)0.5373(2)0.2339(1)0.0228(6)0.0253(6)0.0268(6)0.0037(5)0.0045(5)0.0100(5)
C(4)2i0.1455(2)0.4104(1)0.24573(9)0.0209(5)0.0225(6)0.0194(5)0.0041(4)0.0071(4)0.0031(4)
C(5)2i0.0008(2)0.3792(2)0.1412(1)0.0232(6)0.0233(6)0.0228(6)0.0043(5)0.0060(5)0.0060(5)
C(6)2i−0.2865(2)0.3896(2)0.0747(1)0.0248(7)0.0528(9)0.0305(7)0.0121(6)−0.0005(5)0.0080(6)
C(7)2i−0.3769(2)0.2134(3)0.0413(2)0.0360(9)0.066(1)0.064(1)−0.0067(8)−0.0061(8)0.014(1)
C(8)2i0.1964(2)0.2466(1)0.2511(1)0.0213(5)0.0220(6)0.0220(6)0.0045(4)0.0063(4)0.0035(4)
C(9)2i0.3523(2)0.2728(2)0.3457(1)0.0243(6)0.0238(6)0.0291(6)0.0060(5)0.0036(5)0.0047(5)
C(10)2i0.0500(2)0.1110(2)0.2537(1)0.0226(6)0.0215(6)0.0248(6)0.0043(5)0.0055(5)0.0051(5)
C(11)2i−0.0158(2)0.1092(2)0.3484(1)0.0358(7)0.0271(7)0.0293(7)0.0025(5)0.0127(6)0.0022(5)
C(12)2i−0.1495(2)−0.0172(2)0.3471(1)0.0401(8)0.0333(7)0.0419(8)0.0043(6)0.0223(7)0.0090(6)
C(13)2i−0.2180(2)−0.1431(2)0.2528(1)0.0267(7)0.0283(7)0.0511(9)0.0011(5)0.0117(6)0.0096(6)
C(14)2i−0.1521(2)−0.1437(2)0.1593(1)0.0305(7)0.0273(7)0.0363(7)−0.0005(5)0.0025(6)0.0008(6)
C(15)2i−0.0182(2)−0.0176(2)0.1600(1)0.0303(7)0.0272(6)0.0255(6)0.0035(5)0.0064(5)0.0035(5)

Source of material

1-tert-Butyl-2-ethyl-3-oxopyrrolidine-1,2-dicarboxylate (0.1 g, 0.39 mM), nitrostyrene (0.069 g, 0.47 mM) and L-proline (20 mol %) in DMSO (2 mL) was stirred for 72 h at RT. The reaction progress was monitored by TLC. (Rf = 0.3 using 15% ethyl acetate/hexane). The reaction was quenched with water and the product was extracted using dichloromethane. The solvent was completely evaporated and the residual oil was purified using a silica column. Pure fractions were concentrated and treated with 20% trifluoroacetic acid in DCM and stirred for 4 h. The solution was basified with saturated NaHCO3. The organic layer was separated and then concentrated to dryness. Yield 72%. m.p = 449 K. Crystals suitable for X-ray analysis were grown in methanolic HCl and ethyl acetate.

Experimental details

X-ray single crystal diffraction data were collected on a Nonius κ-CCD diffractometer. Temperature was controlled by an Oxford Cryostream cooling system (Oxford Cryostat). Absorption correction was performed using SADABS [1]. All hydrogen atoms, except H3, were placed in idealised positions and refined in riding models with Uiso assigned the values to be 1.2 or 1.5 times those of their parent atoms and the constraint distances of C—H ranging from 0.95 Å to 1.00 Å. The hydrogen atoms H1 and H2 were located in the electron difference maps and refined freely.

Discussion

Oxopyrrolidine moieties have a proline backbone and are used in a wide range of applications such as ACE inhibitors, antibacterial, antitumor and asymmetric catalysis [2–5]. Here we report for the first time the single crystal structure of a 4-oxopyrrolidine derivative. The five membered oxopyrrolidine ring N(1)–C(1) bond is twisted with the pseudorotation parameters P (188.6(1)°), τ (M) (34.3(1)°) [6], puckering amplitude Q of 0.3246(14) Å, and φ is 26.5(3)°. The nitrogen of oxopyrrolidine is protonated and two adjacent molecules with quaternary nitrogen are interconnected through N(+)-H⋯Cl(−) hydrogen bonds to form a cyclic motif classified by the graph set descriptor R24(8) in which the chloride ions are hydrogen bonded to the hydrogen of quaternay nitrogen of oxopyrrolidine moieties in a bifurcated manner. Such dimeric units grow further along the a axis.


Corresponding author: Glenn E.M Maguire, Catalysis and Peptide Research Unit, School of Health Sciences, University of, KwaZulu-Natal, Durban 4000, South Africa, e-mail:

Acknowledgements:

The authors wish to thank Dr. Hong Su from the Chemistry Department of the University of Cape Town for assistance with the X-ray data collection and refinement.

References

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Received: 2015-4-22
Accepted: 2016-1-18
Published Online: 2016-2-9
Published in Print: 2016-3-1

©2016 Nilay Bhatt et al., published by De Gruyter.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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  66. Crystal structure of 2-amino-4-(3,4-difluorophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile, C16H12N2O2F2
  67. Crystal structure of poly[(di-μ2-aqua-κ2O:O)bis(μ5-oxalato-1:2κ2O1; 1κ1O2; 3:4:5κ3O3; 3κ1O4)(μ4-oxalato-1:2κ2O1; 2:3κ2O2; 3:4κ2O3; 4:1κ2O4)dizinc(II)disodium(I)]
  68. Crystal structure of tetraethylammonium hexachloridotantalate(V), C8H20Cl6NTa
  69. Crystal structure of (E)-2,4-dibromo-6-(((2-nitrophenyl)imino)methyl)phenol, C13H8Br2N2O3
  70. The crystal structure of 6-chloro-2,4-diphenylquinoline
  71. Crystal structure of (E)-2-(((1,10-phenanthrolin-5-yl)imino)methyl)-5-methylphenol monohydrate, C20H15N3O·H2O
  72. Crystal structure of tris(3-(2-pyridyl)pyrazole)zinc(II)tetrachlorido zincate(II), C24H21Cl4N9Zn2
  73. Crystal structure of 4-chloro-N,N-diethyl-6-(piperidin-1-yl)-1,3,5-triazin-2-amine, C12H20ClN5
  74. The crystal structure of 4-allyl-5-benzyl-2,4-dihydro-3H-1,2,4-triazol-3-one, C12H13N3O
  75. Crystal structure of diethyl 2-(((2-(pyridin-3-ylthio)phenyl)amino)methylene)malonate, C19H20N2O4S
  76. Crystal structure of fac-tricarbonyl(2-(isopropylimino)methyl-5-methylphenolatido-κ2N,O)(pyridine-κN)rhenium(I), C19H19N2O4Re
  77. Crystal structure of 1,3,6,8-tetrakis(p-tolylthio)pyrene, C44H34S4
  78. Crystal structure of catena-poly-(diaqua-(μ2-1,2-bis(4-pyridyl)ethene-κ2N:N′)-(4-methylphthalato-κ2O,O′)-cobalt(II)trihydrate, C21H26CoN2O9
  79. Crystal structure of tetraethylammonium fac-tricarbonyl(hexafluoroacetylacetonato-κ2O,O′)-(nitrato-κO)rhenium(I), C16H21O8N2F6Re
  80. Crystal structure of 3-(thiophen-2-yl)-5-(p-tolyl)-4,5-dihydro-1H-pyrazole-1-carboxamide
  81. Crystal structure of bis(1-ethyl-3-methylimidazolium) tetrabromidocadmate(II), [C6H11N2]2[CdBr4]
  82. Crystal structure of N′-(adamantan-2-ylidene)-isonicotinohydrazide, C16H19N3O
  83. Crystal structure of trans-tetraaquabis(4-(pyridin-4-ylsulfonyl)pyridine-κN)cobalt(II) diperchlorate dihydrate, C20H28Cl2CoN4O18S2
  84. Crystal structure of (Z)-4-(furan-2-yl(p-tolylamino)methylene)-3-methyl-1-p-tolyl-1H-pyrazol-5(4H)-one, C23H21N3O2
  85. Crystal structure of 2-[(4-fluorobenzyl)sulfanyl]-4-(2-methylpropyl)-6-oxo-1,6-dihydropyrimidine-5-carbonitrile, C16H16FN3OS
  86. Crystal structure of poly[octaaqua-tris(benzene-1,2,4,5-tetracarboxylato)tetralanthanum(III)] hexahydrate, C30H34La4O38
  87. Crystal structure of trans-tetraaqua-bis(4,4′-sulfonyldipyridine-κN)zinc(II) diperchlorate dihydrate, C20H28Cl2ZnN4O18S2
  88. Crystal structure of 4-nitro-thiophene-2-carboxylic acid, a structure with a Z′ = 4, C5H3NO4S
  89. Crystal structure of dirubidium trimercury(II) tetraselenide, Rb2Hg3Se4
  90. Crystal structure of 5-(adamantan-1-yl)-3-[(4-chloroanilino)methyl]-2,3-dihydro-1,3,4-oxadiazole-2-thione, C19H22ClN3OS
  91. Crystal structure of hexaaquamagnesium(II) 5,5′-bitetrazole-1,1′-diolate, C2H12N8O8Mg
  92. The crystal structure of catena-poly[(μ2-1,1′-benzene-1,4-diylbis(1H-benzimidazole-κ2N:N′)silver(I)] nitrate, C20H14N5AgO3
  93. The crystal structure of 1-(2-(4-chlorophenoxy)-4-chlorophenyl)ethanone, C14H10Cl2O2
  94. The crystal structure of 3,5-dinitro-1,3,5-oxadiazinane, C3H6N4O5
  95. Crystal structure of methyl 5-methoxy 1H-indole-2-carboxylate, C11H11NO3
  96. Crystal structure of (Z)-1-(((3-acetyl-2-hydroxyphenyl)amino)methylene)naphthalen-2(1H)-one, C19H15NO3
  97. Crystal structure of (Z)-5-(4-chlorobenzylidene)-2-thioxothiazolidin-4-one —dimethylsulfoxide (1:1), C12H12ClNO2S3
  98. Crystal structure of 5,5′-((4-(trifluoromethyl)phenyl)methylene)bis(1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione) – diethylamine – dichloromethane (1/1/1) C25H32Cl2F3N5O6
  99. Crystal structure of 2-(dimethylsulfanylidene)-N-(4-methoxyphenyl)-3-oxo-3-phenylpropanamide
  100. Crystal structure of (1,10-phenanthroline-κ2N,N′)bis(thiocyanato-κN)platinum(II), C14H8N4PtS2
  101. Crystal structure of di(μ2-chlorido)bis[2-(2-pyridyl)phenyl-κ2N,C1]dipalladium(II), C22H16Cl2N2Pd2
  102. Crystal structure of trans-dibromidodi(pyridine-κN)palladium(II), PdBr2(C5H5N)2
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