Home Crystal structure of methyl 4-acetoxy-3-methoxybenzoate, C11H12O5
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Crystal structure of methyl 4-acetoxy-3-methoxybenzoate, C11H12O5

  • Pan-Lei Xiao , Xiu-Ying Song , Chen-Yu Yang , Xu-Liang Nie ORCID logo EMAIL logo and Yi-Hua Wang
Published/Copyright: August 13, 2021

Abstract

C11H12O5, orthorhombic, P212121 (no. 19), a = 5.5523(7) Å, b = 12.7610(17) Å, c = 15.374(2) Å, V = 1089.3(2) Å3, Z = 4, R gt (F) = 0.0273, wR ref (F 2) = 0.0787, T = 296(2) K.

CCDC no.: 2100375

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: 0.18 × 0.14 × 0.12 mm
Wavelength: Mo Kα radiation (0.71073 Å)
μ: 0.11 mm−1
Diffractometer, scan mode: Bruker APEX-II, φ and ω
θ max, completeness: 25.5°, >99%
N(hkl)measured, N(hkl)unique, R int: 8424, 2025, 0.020
Criterion for I obs, N(hkl)gt: I obs > 2 σ(I obs), 1858
N(param)refined: 149
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 U iso*/U eq
C1 0.5118 (4) 0.09658 (15) 0.15142 (12) 0.0473 (5)
H1 0.3788 0.0731 0.1826 0.057*
C2 0.6444 (4) 0.18063 (15) 0.18166 (12) 0.0473 (5)
C3 0.8390 (4) 0.21561 (15) 0.13224 (13) 0.0482 (5)
C4 0.9024 (4) 0.16798 (16) 0.05595 (13) 0.0537 (5)
H4 1.0325 0.1928 0.0239 0.064*
C5 0.7715 (4) 0.08243 (14) 0.02673 (13) 0.0510 (5)
H5 0.8146 0.0491 −0.0248 0.061*
C6 0.5776 (4) 0.04688 (14) 0.07416 (12) 0.0439 (4)
C7 0.4447 (4) −0.04705 (14) 0.04274 (12) 0.0467 (5)
C8 0.1116 (5) −0.15816 (18) 0.06569 (16) 0.0670 (6)
H8A 0.0115 −0.1394 0.0172 0.101*
H8B 0.0123 −0.1798 0.1135 0.101*
H8C 0.2164 −0.2146 0.0492 0.101*
C9 0.4122 (5) 0.19674 (19) 0.31070 (14) 0.0644 (6)
H9A 0.2631 0.2040 0.2796 0.097*
H9B 0.4062 0.2380 0.3629 0.097*
H9C 0.4366 0.1244 0.3255 0.097*
C10 0.8958 (4) 0.39492 (16) 0.16569 (13) 0.0524 (5)
C11 1.0699 (5) 0.46698 (19) 0.20890 (15) 0.0633 (6)
H11A 1.0559 0.5357 0.1840 0.095*
H11B 1.2308 0.4413 0.2005 0.095*
H11C 1.0352 0.4703 0.2700 0.095*
O1 0.5057 (3) −0.09909 (12) −0.01877 (11) 0.0721 (5)
O2 0.2537 (3) −0.06905 (10) 0.09129 (9) 0.0580 (4)
O3 0.6046 (3) 0.23179 (12) 0.25771 (9) 0.0660 (5)
O4 0.9855 (3) 0.29545 (11) 0.16520 (9) 0.0567 (4)
O5 0.7066 (3) 0.41688 (12) 0.13460 (14) 0.0762 (5)

Source of material

The mixture of methyl 4-hydroxy-3-methoxybenzoate (1.82 g, 0.01 mol), acetic anhydride (3.06 g, 0.03 mol) was reacted at 80 °C for 2 h. After the reaction was completed (monitored by thin layer chromatography (TLC)), colorless crystals were produced during the cooling to room temperature. The product was filtered, and washed with water three times respectively. Then crystals were obtained. Yield 83% (based on methyl 4-hydroxybenzoate). Elemental Anal. Calcd. (%) for C11H12O5(224.21): C, 56.69; H, 5.55. Found (%): C, 58.93; H, 5.39.

Experimental details

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

Comment

Polyphenols that occur naturally in plants, which are found in a variety of plant-based foods [5]. There are many different phenolic acid derivatives found in nature, and they can be divided into two categories: benzoic acid derivatives, such as gallic acid, and cinnamic acid derivatives, including caffeic acid [6], [7], [8]. Vanillic acid, 4-Hydroxy-3-methoxybenzoic acid, is a natural phenolic acid derivatives of benzoic acid category, and is widely found in nature, such as vanilla beans, vanilla pods, peruvian balsam, benzoin and javanese oil. Vanillic acid has antibacterial activities, antioxidant activities, anti-inflammatory, anti-virus and antithrombotic effect [9], [10], [11], [12]. Because of its strong activities and its wide applications, the synthesis and application of vanillic acid and its derivatives have attracted much attention [10], [11], [12], [13], [14], [15]. We still focused on the synthesis and antibacterial activities of preservatives. In order to synthesis novel preservatives, we have designed and synthesized a series of phenolic acids derivatives [16], [17], [18]. Herein we report the synthesis and single crystals of the title compound as an important intermediate.

There is one title molcelule in the asymmetric unit. In the molecule of the title compound bond lengths and angles within methyl 4-acetoxy-3-methoxybenzoate are very similar to those given in the literature [17, 18]. In the title structure, the part of methyl 4-hydroxy-3-methoxybenzoate is approximately planar. The dihedral angle formed by the C1–C6 plane with the carboxylate group O1–C7–O2 plane is 6.5°. The acetyl group O4–C10–O5 plane is perpendicular to methyl p-hydroxy-3,5-dimethoxybenzoate and the dihedral angle is 73.5°. The torsion angles of C1–C2–O3–C9, C1–C6–C7–O2, C6–C7–O2–C8, C2–C3–O4–C10 and C3–O4–C10–C11 are 0.0(3)°, 5.6(3)°, 179.4(2)°, −73.8(2)° and 175.9(2)°, respectively.


Corresponding author: Xu-Liang Nie, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, Department of Chemistry, Jiangxi Agricultural University, Nanchang 330045, People’s Republic of China, E-mail:

Funding source: Education Department of Jiangxi Province of China doi.org/10.13039/501100009102

Award Identifier / Grant number: GJJ200404

Award Identifier / Grant number: GJJ160382

Funding source: Graduate Innovative Special Fund Projects of Jiangxi Province doi.org/10.13039/100017355

Award Identifier / Grant number: S202110410094

Acknowledgments

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 Foundation of GJJ200404, GJJ160382, Education Department of Jiangxi Province of China; No. S202110410094, Graduate Innovative Special Fund Projects of Jiangxi Province.

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

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Received: 2021-07-09
Accepted: 2021-07-30
Published Online: 2021-08-13
Published in Print: 2021-12-20

© 2021 Pan-Lei Xiao 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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  71. Crystal structure of diethyl 6,12-dimethyl-3,9-di-p-tolyl-3,9-diazapentacyclo[6.4.0.02,7.04,11.05,10]dodecane-1,5-dicarboxylate, C32H38N2O4
  72. Crystal structure of (E)-N′-(1-(3-chloro-4-fluorophenyl)ethylidene)-4-hydroxy – tetrahydrofuran (2/1), C17H16ClFN2O2.5
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