Home The crystal structure of ethyl 4-hydroxy-2-(4-methoxyphenyl)-5-oxo-1-(2-oxo-2H-chromen-6-yl)-2,5-dihydro-1H-pyrrole-3-carboxylate, C23H19NO7
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The crystal structure of ethyl 4-hydroxy-2-(4-methoxyphenyl)-5-oxo-1-(2-oxo-2H-chromen-6-yl)-2,5-dihydro-1H-pyrrole-3-carboxylate, C23H19NO7

  • Bimal Bhushan Chakraborty , Saurav Paul , Siddique Anwar and Sudip Choudhury ORCID logo EMAIL logo
Published/Copyright: September 22, 2023

Abstract

C23H19NO7, monoclinic, P21/n (no. 14), a = 17.9964(9) Å, b = 5.9211 Å, c = 18.8608(10) Å, β = 98.201(3)°, V = 1989.23(18) Å3, Z = 4, R gt (F) = 0.0496, wR ref (F2) = 0.1561, T = 296 K.

CCDC no.: 2290513

The molecular structure is shown in the figure. Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal: White block
Size: 0.34 × 0.31 × 0.31 mm
Wavelength: Mo Kα radiation (0.71073 Å)
μ: 0.11 mm−1
Diffractometer, scan mode: Bruker APEX-II, φ and ω
θmax, completeness: 30.2°, >99 %
N(hkl)measuredN(hkl)uniqueRint: 39,088, 5852, 0.031
Criterion for Iobs, N(hkl)gt: Iobs > 2 σ(Iobs), 4321
N(param)refined: 283
Programs: Bruker [1], WinGX/ORTEP [2], Olex2 [3], SHELX [4, 5]
Table 2:

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

Atom x y z Uiso*/Ueq
O1 −0.06233 (6) 0.77070 (19) 0.79398 (5) 0.0446 (3)
O2 −0.16815 (7) 0.7565 (2) 0.71989 (7) 0.0631 (3)
O3 0.09556 (6) 0.07707 (19) 1.03857 (5) 0.0452 (3)
O4 0.23410 (6) −0.02443 (19) 1.11960 (6) 0.0478 (3)
H11 0.276739 −0.027579 1.141767 0.072*
O5 0.37956 (7) 0.1893 (2) 1.13966 (7) 0.0605 (3)
O6 0.38628 (6) 0.5189 (2) 1.08222 (6) 0.0490 (3)
O7 0.36688 (8) 0.6237 (2) 0.76172 (6) 0.0600 (3)
N1 0.15631 (6) 0.38896 (19) 0.99770 (5) 0.0322 (2)
C1 −0.12908 (8) 0.6654 (3) 0.76924 (8) 0.0456 (3)
C2 −0.14580 (8) 0.4590 (3) 0.80354 (8) 0.0483 (4)
H1 −0.192038 0.389829 0.789989 0.058*
C3 −0.09623 (8) 0.3635 (3) 0.85479 (7) 0.0409 (3)
H2 −0.107979 0.227897 0.875487 0.049*
C4 −0.02511 (7) 0.4699 (2) 0.87775 (6) 0.0318 (3)
C5 0.02996 (7) 0.3747 (2) 0.92912 (6) 0.0317 (3)
H3 0.021171 0.236869 0.950071 0.038*
C6 0.09774 (7) 0.4864 (2) 0.94872 (6) 0.0307 (3)
C7 0.10872 (7) 0.6974 (2) 0.91830 (7) 0.0382 (3)
H4 0.153014 0.775959 0.932891 0.046*
C8 0.05525 (8) 0.7909 (2) 0.86720 (8) 0.0408 (3)
H5 0.063607 0.929947 0.846794 0.049*
C9 −0.01108 (7) 0.6750 (2) 0.84669 (7) 0.0347 (3)
C10 0.15041 (7) 0.1960 (2) 1.03673 (6) 0.0329 (3)
C11 0.22604 (7) 0.1581 (2) 1.07840 (7) 0.0352 (3)
C12 0.27300 (7) 0.3237 (2) 1.06551 (7) 0.0359 (3)
C13 0.23225 (7) 0.4895 (2) 1.01285 (6) 0.0328 (3)
H6 0.228852 0.635266 1.036763 0.039*
C14 0.26917 (7) 0.5240 (2) 0.94608 (7) 0.0332 (3)
C15 0.26335 (8) 0.3651 (2) 0.89143 (7) 0.0389 (3)
H10 0.237041 0.231778 0.895777 0.047*
C16 0.29636 (9) 0.4031 (3) 0.83046 (8) 0.0435 (3)
H9 0.291646 0.296369 0.793922 0.052*
C17 0.33657 (8) 0.6010 (3) 0.82386 (7) 0.0411 (3)
C18 0.34301 (9) 0.7598 (3) 0.87784 (8) 0.0444 (3)
H8 0.369783 0.892380 0.873804 0.053*
C19 0.30902 (8) 0.7195 (3) 0.93845 (7) 0.0408 (3)
H7 0.313268 0.827044 0.974731 0.049*
C20 0.40555 (13) 0.8276 (4) 0.75164 (11) 0.0685 (6)
H12 0.373422 0.953834 0.757207 0.103*
H13 0.419531 0.829603 0.704395 0.103*
H14 0.449839 0.837121 0.786519 0.103*
C21 0.35100 (8) 0.3347 (3) 1.09987 (7) 0.0408 (3)
C22 0.46418 (9) 0.5419 (4) 1.11482 (11) 0.0629 (5)
H15 0.492521 0.408544 1.105390 0.076*
H16 0.467217 0.560120 1.166259 0.076*
C23 0.49490 (12) 0.7444 (5) 1.08274 (18) 0.0979 (9)
H17 0.547761 0.755622 1.099206 0.147*
H18 0.470043 0.877118 1.096781 0.147*
H19 0.486755 0.731402 1.031478 0.147*

1 Source of material

A mixture of 6-amino coumarin (1 eq), anisaldehyde (1 eq), ethylenedicarboxylate (1.3 eq), and iodine (catalytic amount) was dissolved in acetonitrile and refluxed for about 1 h. The progress of the reaction was monitored by TLC. On completion of the reaction, the solvent was removed in vacuo using rotary evaporator. The precipitate obtained was washed with ethanol and then recrystallised from chloroform to get the product in high purity (yield 82 %, m.p. 191–193 °C). White crystals of the title compound were obtained by slow evaporation of solvent from a chloroform solution of the compound at room temperature. IR (KBr, cm−1): 3375 (O–H), 1730 (C=O ester), 1658 (C=O lactam). 1H NMR (400 MHz, CDCl3, δ ppm): 1.12 (t, 7.2 Hz, 3H), 3.66 (s, 3H), 4.12 (q, 2H), 5.61 (s, 1H), 6.31 (d, J = 9.6, 1H), 6.70 (d, J = 6.8, 2H), 7.06 (d, J = 8.8, 2H), 7.15 (d, 1H, J = 8.8), 7.40 (dd, J = 9.2, 2.4, 1H), 7.52 (d, J = 9.6, 1H), 7.70 (d, J = 2.4, 1H), 9.01(broad, 1H). 13C NMR (100 MHz, CDCl3, δ ppm): 13.9, 55.2, 61.2, 61.4, 113.5, 114.2, 117.3, 119, 121.3, 125.2, 126.1, 128.5, 132.8, 143, 151.3, 156.1, 159.8, 160.2, 162.8, 165. Anal. Calc. for C23H19NO7: C 65.56; H 4.54; N 3.32; O 26.58. Found: C 65.49, H 4.51, N 3.28 %.

All chemicals used were purchased from Sigma Aldrich and used as received without further purification.

2 Experimental details

The structure was solved by Direct Methods and refined against F2 by a full-matrix least-squares procedure using Shelxl program [4] under Olex2 suite [3]. Systematically absent reflections were automatically rejected. Two small angle reflections affected by the beamstop were omitted during refinement. H atoms were included in calculated positions and refined as riding atoms, with C–H = 0.93–0.98 Å with Uiso(H) = 1.5 Ueq(C) for methyl H and hydroxyl H atoms. Uiso(H) was set to 1.2 Ueq(C) for all other H atoms. Me and OH groups were refined as rotating groups.

3 Comment

2–Pyrrolidinones are a class of naturally occurring simple five membered nitrogen containing heterocyclic compounds occupying a special place in synthetic as well as in medicinal chemistry [6, 7]. They have a broad spectrum of significant biological activities that include antimicrobial [8], anticancer [9], HIV-1 integrase inhibitors [10], and many more. In material application, 2-pyrrolidinones have been used as sensitizers in dye sensitised solar cell [11], fluorescence probe for the detection of Cr(VI) metal ion [12], etc.

Single-crystal structure analysis revealed that the title compound crystallized in the monoclinic space group P21/n. The title molecule is shown in the figure. Bond lengths and angles are all in the expected ranges [13, 14]. Obtained C–C bond precision was 0.0020 Å.


Corresponding author: Sudip Choudhury, Department of Chemistry, Centre for Soft Matter, Assam University, Silchar 788011, India, E-mail:

Funding source: NRB, Govt of India (SC)

Acknowledgments

The authors thankfully acknowledge DST–FIST (Chemistry Dept) of Assam University and USIC, Gauhati University, India for recording of the XRay data.

  1. Author contributions: BBC and SP have contributed equally. All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Competing interests: The authors declare no conflicts of interest regarding this article.

  3. Research funding: This work was partially supported by the NRB, Govt of India (SC). DSt–INSPIRE Fellowships to SP and UGC Fellowship to BBC are acknowledged.

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Received: 2023-07-29
Accepted: 2023-08-24
Published Online: 2023-09-22
Published in Print: 2023-12-15

© 2023 the author(s), published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution 4.0 International License.

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  62. Crystal structure of (2-(2-pyridine)-benzimidazole-κ2 N,N′)-bis(1-phenylpyrazole-κ2 C,N)iridium(III) hexafluorophosphate, C30H22F6IrN7P
  63. Crystal structure of dichlorido-bis[2-(2,4-difluorophenyl)pyridine-κ1N]platinum(II), C22H14Cl2F4N2Pt
  64. Crystal structure of (5R,8R,9R,10R,12R,13R,14R, 17S,17Z)-2-((3-fluoropyridin-4-yl)methylene)-12-hydroxy-4,4,8,10,14-pentamethyl-17-((R)-2,6,6-trimethyltetrahydro-2H-pyran-2-yl)hexadecahydro-3H-cyclopenta[a]phenanthren-3-one, C36H52FNO3
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