Home Crystal structure of ethyl (Z)-3-amino-2-cyano-3-(2-oxo-2H-chromen-3-yl)acrylate, C15H12N2O4
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Crystal structure of ethyl (Z)-3-amino-2-cyano-3-(2-oxo-2H-chromen-3-yl)acrylate, C15H12N2O4

  • Chun-Mei Guo , Sha Chen , Mei-Jun Chu , Min Wan and Xu-Liang Nie ORCID logo EMAIL logo
Published/Copyright: June 10, 2022

Abstract

C15H12N2O4, monoclinic, P21/c (no. 14), a = 5.4588(5) Å, b = 29.629(3) Å, c = 8.1217(8) Å, β = 93.157(1)°, V = 1311.6(2) Å3, Z = 4, R gt (F) = 0.0346, wR ref (F2) = 0.0925, T = 296(2) K.

CCDC no.: 2175699

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: Colorless block
Size: 0.22 × 0.16 × 0.12 mm
Wavelength: Mo Kα radiation (0.71073 Å)
μ: 0.11 mm−1
Diffractometer, scan mode: Bruker APEX-II, φ and ω
θmax, completeness: 25.5°, >99%
N(hkl)measured, N(hkl)unique, Rint: 9962, 2432, 0.019
Criterion for Iobs, N(hkl)gt: Iobs > 2 σ(Iobs), 2063
N(param)refined: 192
Programs: Bruker [1], SHELX [2, 3], Diamond [4]
Table 2:

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

Atom x y z Uiso*/Ueq
C1 0.8504 (3) 0.74098 (5) 0.52205 (18) 0.0353 (3)
C2 0.9041 (3) 0.78594 (5) 0.4984 (2) 0.0445 (4)
H2 1.0416 0.7944 0.4432 0.053*
C3 0.7495 (4) 0.81795 (5) 0.5582 (2) 0.0528 (5)
H3 0.7818 0.8484 0.5420 0.063*
C4 0.5469 (4) 0.80539 (6) 0.6422 (2) 0.0523 (4)
H4 0.4435 0.8274 0.6814 0.063*
C5 0.4976 (3) 0.76059 (5) 0.6679 (2) 0.0445 (4)
H5 0.3629 0.7524 0.7266 0.053*
C6 0.6491 (3) 0.72714 (5) 0.60612 (18) 0.0350 (3)
C7 0.6114 (3) 0.67973 (5) 0.62548 (18) 0.0358 (3)
H7 0.4797 0.6697 0.6836 0.043*
C8 0.7625 (2) 0.64933 (5) 0.56134 (17) 0.0326 (3)
C9 0.9684 (3) 0.66425 (5) 0.46827 (18) 0.0345 (3)
C10 0.7300 (2) 0.59955 (5) 0.57958 (17) 0.0337 (3)
C11 0.9011 (3) 0.57515 (5) 0.67514 (18) 0.0348 (3)
C12 0.8917 (3) 0.52615 (5) 0.68742 (18) 0.0355 (3)
C13 1.0850 (3) 0.59921 (5) 0.77001 (18) 0.0369 (3)
C14 1.0815 (3) 0.46132 (5) 0.8100 (2) 0.0466 (4)
H14A 1.0678 0.4463 0.7038 0.056*
H14B 0.9483 0.4512 0.8751 0.056*
C15 1.3245 (3) 0.45101 (6) 0.8972 (2) 0.0556 (5)
H15A 1.4542 0.4618 0.8324 0.083*
H15B 1.3405 0.4190 0.9122 0.083*
H15C 1.3342 0.4657 1.0028 0.083*
N1 0.5365 (2) 0.58189 (4) 0.49965 (17) 0.0436 (3)
H1A 0.5099 0.5533 0.5048 0.052*
H1B 0.4369 0.5989 0.4423 0.052*
N2 1.2273 (3) 0.61946 (5) 0.84796 (19) 0.0537 (4)
O1 1.00627 (18) 0.70976 (3) 0.45731 (13) 0.0398 (3)
O2 1.1085 (2) 0.64009 (4) 0.39952 (14) 0.0462 (3)
O3 0.7397 (2) 0.50266 (4) 0.61457 (15) 0.0482 (3)
O4 1.07164 (19) 0.50996 (3) 0.78872 (13) 0.0427 (3)

Source of material

The starting materials 2-hydroxybenzaldehyde (0.61 g, 5 mmol) and ethyl acetoacetate (2.46 g, 20 mmol) were dissolved in absolute ethanol (100 mL). Piperidine (0.043 g, 0.5 mmol) and acetic acid (0.018 g, 0.03 mmol) were added dropwise to the above solution and refluxed. Reactions were monitored by TLC. After the reaction, the mixture was cooled to room temperature and then 10 mL water was added. The mixture was placed at 3 °C to crystallize. After suction filtration, the filter residue was washed with 50% ice – C2H5OH, and dried in vacuo to give the title compound. The crystals were obtained after one week of slow volatilization at room temperature. Elemental Anal. Calcd. (%) for C15H12N2O4 (284.27): C, 63.38; H, 4.26; N, 9.85. Found (%): C, 62.39; H, 4.36; N, 9.70.

Experimental details

All H atoms were included in calculated positions and refined as riding atoms, with C–H = 0.90–0.97 Å with Uiso(H) = 1.5 Ueq(C) for methyl H atoms and 1.2 Ueq(C) for all other H atoms.

Comment

Coumarin is one of phenylpropanoid compounds, which is a natural heterocyclic compound with core structure of enzo-a-pyranone [5, 6]. Coumarin compounds have a mild, sweet smell similar to vanilla, so they are often added to shower gels, perfumes, oils, and other cosmetics to add flavor [7]. But some coumarin compounds such as cyclocoumarin, 4-methyl-7-ethoxy coumarins, dihydrocoumarins, are forbidden to be used in cosmetics, because of its certain hepatotoxicity, allergenic and carcinogenic risks. At present, the detection method of coumarin is high-performance liquid chromatography, which has the disadvantages of few components, scattered detection methods and complex operation [8]. Therefore, it is necessary to establish the detection methods with more uniform and cover more coumarin compounds. As a food and drug safety practitioners, we are committed to the detection and regulation of cosmetics. In order to strengthen the supervision of coumarin and its derivatives, and establish a quick and convenient detection method, a series of coumarin derivatives were synthesized [9], [10], [11].

In the molecule of the title compound (see the Figure), bond lengths and angles within coumarin are very similar to those given in the literature for coumarin derivatives [9], [10], [11]. In the molecules the coumarin moiety is approximately planar. The dihedral angle between the planes of the benzo and pyranosyl moiety is 1.2°. The dihedral angles formed by the plane of C1–C6, the plane of C8–C10–C11–C13, and the plane of the carboxylate group (O3–C12–O4) are 70.64(4)° and 70.21(4)°, respectively. The torsion angles of C7–C8–C10–N1, C7–C8–C10–C11, C8–C10–C11–C13, C10–C11–C13–N2, C11–C12–O4–C14 and C12–O4–C14–C15 are 68.6(2)°, −112.05(16)°, 8.03(2)°, 45.23(5)°, −179.68(12)° and 168.0(2)°, respectively.


Corresponding author: Xu-Liang Nie, College of Chemistry and Materials, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, Jiangxi Agricultural University, Nanchang 330045, P. R. China, E-mail:

Funding source: Key Research Foundation of Education Department of Jiangxi Province of China

Award Identifier / Grant number: GJJ190181

Award Identifier / Grant number: GJJ200404

Funding source: National College Students Innovation and Entrepreneurship Training Program

Award Identifier / Grant number: S202110410095

Acknowledgements

X-ray data were collected at Instrumental Analysis Center Nanchang Hangkong University, Nanchang, 330063, People’s Republic of China.

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

  2. Research funding: This work was supported by the Key Research Foundation of Education Department of Jiangxi Province of China (GJJ190181, GJJ200404) and National College Students Innovation and Entrepreneurship Training Program (No. S202110410095).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

References

1. Bruker. APEX2, SAINT and SADABS; Bruker AXS Inc.: Madison, WI, 2009.Search in Google Scholar

2. Sheldrick, G. M. A short history of Shelx. Acta Crystallogr. 2008, A64, 112–122, https://doi.org/10.1107/s0108767307043930.Search in Google Scholar PubMed

3. Sheldrick, G. M. Crystal structure refinement with SHELXL. Acta Crystallogr. 2015, C71, 3–8, https://doi.org/10.1107/s2053229614024218.Search in Google Scholar

4. Brandenburg, K. DIAMOND. Visual Crystal Structure Information System. Ver. 4.0; Crystal Impact: Bonn, Germany, 2015.Search in Google Scholar

5. Gu, J., Xiao, P. L., Wang, J., Zhong, L., Nie, X. L., Peng, D. Y. Synthesis, crystal structure, spectroscopic characterization and anti-fungal activity of ethyl 2-oxo-2H-chromene-3-carboxylate derivatives. J. Mol. Struct. 2022, 1257, 132576, https://doi.org/10.1016/j.molstruc.2022.132576.Search in Google Scholar

6. Wang, Y. H., Jiang, S. C., Chen, Y., Guo, T., Xia, R. J., Tang, X., He, M., Xue, W. Synthesis and antibacterial activity of novel chalcone derivatives bearing a coumarin moiety. Chem. Pap. 2019, 73, 2493–2500, https://doi.org/10.1007/s11696-019-00802-0.Search in Google Scholar

7. Apilak, W., Veda, P., Supaluk, P., Visanu, T., Chareef, Y., Virapong, P. Rational design of novel coumarins: a potential trend for antioxidants in cosmetics. J. Exp. Clin. Sci. 2020, 19, 209–226, https://doi.org/10.17179/excli2009-1903.Search in Google Scholar

8. China Food and Drug Administration of People’s Republic of China. Safety and Technical Standards for Cosmetics. Ver. 2015; People’s Medical Publishing House: Beijing, 2017.Search in Google Scholar

9. Zeng, F. X., Nie, X. L., Shang-guan, X. C., Yin, Z. P., Peng, D. Y. Crystal structure of 3-methyl-2H-chromen-2-one, C10H8O2. Z. Kristallogr. N. Cryst. Struct. 2016, 231, 975–976, https://doi.org/10.1515/ncrs-2016-0028.Search in Google Scholar

10. Wang, J., Luo, L. S., Deng, Y. C., Li, Z. C., Peng, D. Y. Crystal structure of 6-methyl-3-(pyrrolidine-1-carbonyl)-2H-chromen-2-one, C15H15N1O3. Z. Kristallogr. N. Cryst. Struct. 2022, 237, 331–333, https://doi.org/10.1515/ncrs-2022-0011.Search in Google Scholar

11. Xiong, Z. Q., Yang, L., Xiao, S. Z., Yang, C. Y., Nie, X. L. Crystal structure of 3-acetyl-6-hydroxy-2H-chromen-2-one monohydrate, C11H10O5. Z. Kristallogr. N. Cryst. Struct. 2022, 237, https://doi.org/10.1515/ncrs-2022-0113.Search in Google Scholar

Received: 2022-05-06
Accepted: 2022-05-30
Published Online: 2022-06-10
Published in Print: 2022-08-26

© 2022 Chun-Mei Guo et al., published by De Gruyter, Berlin/Boston

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

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  81. Crystal structure of methyl 2-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)acetate, C15H11NO4
  82. Crystal structure of catena-poly[diaqua-bis(μ2-1,3-di(1H-imidazol-1-yl)propane-κ2N:N′)cobalt(II)] tetrafluoroterephthalate, C26H28N8O6F4Co
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