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ISSN: 2056-9890

2-Chloro-8-meth­oxy­quinoline-3-carbaldehyde

aChemistry Division, School of Science and Humanities, VIT University, Vellore 632 014, Tamil Nadu, India, bSolid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, Karnataka, India, and cDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
*Correspondence e-mail: seikweng@um.edu.my

(Received 6 October 2009; accepted 6 October 2009; online 13 October 2009)

In the title compound, C11H8ClNO2, the quinoline fused-ring system is almost planar (r.m.s. deviation = 0.020 Å). The formyl group is slightly bent out of the quinoline plane [deviation of the O atom = 0.371 (2) Å].

Related literature

For a review of the synthesis of quinolines by the Vilsmeier–Haack reaction, see: Meth-Cohn (1993[Meth-Cohn, O. (1993). Heterocycles, 35, 539-557.]).

[Scheme 1]

Experimental

Crystal data
  • C11H8ClNO2

  • Mr = 221.63

  • Monoclinic, P 21 /n

  • a = 14.4763 (8) Å

  • b = 3.9246 (2) Å

  • c = 17.6295 (9) Å

  • β = 104.802 (3)°

  • V = 968.36 (9) Å3

  • Z = 4

  • Mo Kα radiation

  • μ = 0.37 mm−1

  • T = 290 K

  • 0.30 × 0.18 × 0.11 mm

Data collection
  • Bruker SMART area-detector diffractometer

  • Absorption correction: multi-scan (SADABS; Sheldrick, 1996[Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.]) Tmin = 0.897, Tmax = 0.961

  • 8150 measured reflections

  • 2212 independent reflections

  • 1769 reflections with I > 2σ(I)

  • Rint = 0.026

Refinement
  • R[F2 > 2σ(F2)] = 0.037

  • wR(F2) = 0.149

  • S = 1.18

  • 2212 reflections

  • 137 parameters

  • H-atom parameters constrained

  • Δρmax = 0.30 e Å−3

  • Δρmin = −0.38 e Å−3

Data collection: SMART (Bruker, 2004[Bruker (2004). SAINT and SMART. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 2004[Bruker (2004). SAINT and SMART. Bruker AXS Inc., Madison, Wisconsin, USA.]); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: X-SEED (Barbour, 2001[Barbour, L. J. (2001). J. Supramol. Chem. 1, 189-191.]); software used to prepare material for publication: publCIF (Westrip, 2009[Westrip, S. P. (2009). publCIF. In preparation.]).

Supporting information


Related literature top

For a review of the synthesis of quinolines by the Vilsmeier–Haack reaction, see: Meth-Cohn (1993).

Experimental top

A Vilsmeier-Haack adduct prepared from phosphorus oxytrichloride (6.5 ml, 70 mmol) and N,N-dimethylformamide (2.3 ml, 30 mmol) at 273 K was added N-(2-anisyl)acetamide (1.65 g, 10 mmol). The mixture was heated at 353 K for 15 h. The mixture was poured onto ice; the white product was collected and dried. The compound was purified by recrystallization from a petroleum ether/ethyl acetate mixture to yield colourless blocks of (I).

Refinement top

The H-atoms were placed in calculated positions (C–H 0.93–0.96 Å) and were included in the refinement in the riding model approximation, with U(H) set to 1.2–1.5U(C).

Structure description top

For a review of the synthesis of quinolines by the Vilsmeier–Haack reaction, see: Meth-Cohn (1993).

Computing details top

Data collection: SMART (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001); software used to prepare material for publication: publCIF (Westrip, 2009).

Figures top
[Figure 1] Fig. 1. The molecular structure of (I) at the 50% probability level; hydrogen atoms are drawn as spheres of arbitrary radius.
2-Chloro-8-methoxyquinoline-3-carbaldehyde top
Crystal data top
C11H8ClNO2F(000) = 456
Mr = 221.63Dx = 1.520 Mg m3
Monoclinic, P21/nMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ynCell parameters from 943 reflections
a = 14.4763 (8) Åθ = 1.9–24.6°
b = 3.9246 (2) ŵ = 0.37 mm1
c = 17.6295 (9) ÅT = 290 K
β = 104.802 (3)°Block, colourless
V = 968.36 (9) Å30.30 × 0.18 × 0.11 mm
Z = 4
Data collection top
Bruker SMART area-detector
diffractometer
2212 independent reflections
Radiation source: fine-focus sealed tube1769 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.026
φ and ω scansθmax = 27.5°, θmin = 2.1°
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)
h = 1818
Tmin = 0.897, Tmax = 0.961k = 45
8150 measured reflectionsl = 2222
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.037Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.149H-atom parameters constrained
S = 1.18 w = 1/[σ2(Fo2) + (0.0883P)2 + 0.0632P]
where P = (Fo2 + 2Fc2)/3
2212 reflections(Δ/σ)max = 0.001
137 parametersΔρmax = 0.30 e Å3
0 restraintsΔρmin = 0.38 e Å3
Crystal data top
C11H8ClNO2V = 968.36 (9) Å3
Mr = 221.63Z = 4
Monoclinic, P21/nMo Kα radiation
a = 14.4763 (8) ŵ = 0.37 mm1
b = 3.9246 (2) ÅT = 290 K
c = 17.6295 (9) Å0.30 × 0.18 × 0.11 mm
β = 104.802 (3)°
Data collection top
Bruker SMART area-detector
diffractometer
2212 independent reflections
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)
1769 reflections with I > 2σ(I)
Tmin = 0.897, Tmax = 0.961Rint = 0.026
8150 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0370 restraints
wR(F2) = 0.149H-atom parameters constrained
S = 1.18Δρmax = 0.30 e Å3
2212 reflectionsΔρmin = 0.38 e Å3
137 parameters
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
Cl10.80902 (4)0.23452 (14)0.68475 (3)0.0499 (2)
N10.71583 (11)0.3286 (4)0.54057 (8)0.0338 (4)
O11.02603 (11)0.8263 (5)0.61921 (10)0.0627 (5)
O20.54659 (9)0.2331 (4)0.44173 (8)0.0450 (4)
C10.79779 (12)0.3856 (5)0.58921 (9)0.0333 (4)
C20.87625 (12)0.5588 (5)0.57179 (10)0.0347 (4)
C30.86350 (13)0.6661 (5)0.49563 (10)0.0344 (4)
H30.91290.77850.48110.041*
C40.77669 (12)0.6081 (5)0.43926 (10)0.0320 (4)
C50.75979 (14)0.7149 (5)0.36018 (11)0.0377 (4)
H50.80800.82050.34260.045*
C60.67289 (14)0.6619 (5)0.31039 (10)0.0395 (4)
H60.66200.73250.25850.047*
C70.59819 (13)0.5015 (5)0.33542 (10)0.0381 (4)
H70.53900.47100.30010.046*
C80.61230 (12)0.3907 (5)0.41126 (10)0.0339 (4)
C90.70294 (11)0.4414 (4)0.46533 (9)0.0304 (4)
C100.96654 (14)0.6382 (6)0.63092 (11)0.0451 (5)
H100.97740.53550.67990.054*
C110.45218 (13)0.1914 (6)0.39243 (13)0.0477 (5)
H11A0.41340.07380.42080.072*
H11B0.45480.06130.34690.072*
H11C0.42490.41100.37640.072*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Cl10.0550 (4)0.0636 (4)0.0312 (3)0.0071 (2)0.0116 (2)0.00723 (19)
N10.0347 (8)0.0368 (8)0.0325 (7)0.0019 (6)0.0132 (6)0.0004 (6)
O10.0409 (8)0.0860 (13)0.0560 (10)0.0244 (8)0.0028 (7)0.0043 (9)
O20.0321 (7)0.0598 (10)0.0421 (8)0.0124 (6)0.0078 (6)0.0026 (6)
C10.0373 (9)0.0355 (9)0.0288 (8)0.0012 (7)0.0115 (6)0.0005 (7)
C20.0315 (9)0.0369 (10)0.0360 (9)0.0019 (7)0.0088 (7)0.0028 (7)
C30.0311 (9)0.0372 (9)0.0377 (9)0.0035 (7)0.0138 (7)0.0011 (7)
C40.0338 (9)0.0318 (9)0.0326 (8)0.0006 (7)0.0127 (7)0.0016 (7)
C50.0399 (10)0.0411 (11)0.0353 (10)0.0009 (8)0.0157 (8)0.0031 (7)
C60.0451 (10)0.0443 (11)0.0297 (9)0.0047 (8)0.0110 (7)0.0032 (7)
C70.0359 (9)0.0411 (10)0.0358 (9)0.0021 (8)0.0062 (7)0.0036 (7)
C80.0312 (9)0.0344 (10)0.0372 (9)0.0005 (7)0.0109 (7)0.0034 (7)
C90.0310 (8)0.0310 (9)0.0315 (8)0.0002 (7)0.0121 (6)0.0024 (6)
C100.0403 (11)0.0549 (12)0.0376 (10)0.0038 (9)0.0053 (8)0.0011 (9)
C110.0304 (10)0.0542 (13)0.0553 (13)0.0076 (8)0.0053 (8)0.0010 (9)
Geometric parameters (Å, º) top
Cl1—C11.7536 (17)C4—C91.425 (2)
N1—C11.294 (2)C5—C61.354 (3)
N1—C91.365 (2)C5—H50.9300
O1—C101.192 (3)C6—C71.416 (3)
O2—C81.355 (2)C6—H60.9300
O2—C111.429 (2)C7—C81.371 (2)
C1—C21.423 (3)C7—H70.9300
C2—C31.374 (2)C8—C91.425 (2)
C2—C101.482 (2)C10—H100.9300
C3—C41.407 (2)C11—H11A0.9600
C3—H30.9300C11—H11B0.9600
C4—C51.416 (2)C11—H11C0.9600
C1—N1—C9117.55 (15)C7—C6—H6119.2
C8—O2—C11118.05 (15)C8—C7—C6120.64 (16)
N1—C1—C2125.95 (16)C8—C7—H7119.7
N1—C1—Cl1114.99 (13)C6—C7—H7119.7
C2—C1—Cl1119.05 (13)O2—C8—C7125.91 (16)
C3—C2—C1116.23 (15)O2—C8—C9114.72 (15)
C3—C2—C10119.81 (16)C7—C8—C9119.37 (16)
C1—C2—C10123.91 (16)N1—C9—C8118.58 (15)
C2—C3—C4120.89 (16)N1—C9—C4122.33 (15)
C2—C3—H3119.6C8—C9—C4119.09 (16)
C4—C3—H3119.6O1—C10—C2123.71 (19)
C3—C4—C5123.09 (16)O1—C10—H10118.1
C3—C4—C9117.00 (16)C2—C10—H10118.1
C5—C4—C9119.89 (16)O2—C11—H11A109.5
C6—C5—C4119.43 (17)O2—C11—H11B109.5
C6—C5—H5120.3H11A—C11—H11B109.5
C4—C5—H5120.3O2—C11—H11C109.5
C5—C6—C7121.57 (17)H11A—C11—H11C109.5
C5—C6—H6119.2H11B—C11—H11C109.5
C9—N1—C1—C20.5 (3)C11—O2—C8—C9176.32 (16)
C9—N1—C1—Cl1179.85 (12)C6—C7—C8—O2179.69 (18)
N1—C1—C2—C31.7 (3)C6—C7—C8—C90.6 (3)
Cl1—C1—C2—C3179.00 (14)C1—N1—C9—C8178.13 (16)
N1—C1—C2—C10175.74 (18)C1—N1—C9—C41.7 (3)
Cl1—C1—C2—C103.6 (3)O2—C8—C9—N10.5 (2)
C1—C2—C3—C40.6 (3)C7—C8—C9—N1179.81 (16)
C10—C2—C3—C4176.92 (17)O2—C8—C9—C4179.36 (16)
C2—C3—C4—C5179.70 (17)C7—C8—C9—C40.3 (3)
C2—C3—C4—C91.3 (3)C3—C4—C9—N12.6 (3)
C3—C4—C5—C6177.25 (17)C5—C4—C9—N1178.97 (16)
C9—C4—C5—C61.1 (3)C3—C4—C9—C8177.22 (16)
C4—C5—C6—C70.1 (3)C5—C4—C9—C81.2 (3)
C5—C6—C7—C80.8 (3)C3—C2—C10—O19.2 (3)
C11—O2—C8—C73.4 (3)C1—C2—C10—O1168.2 (2)

Experimental details

Crystal data
Chemical formulaC11H8ClNO2
Mr221.63
Crystal system, space groupMonoclinic, P21/n
Temperature (K)290
a, b, c (Å)14.4763 (8), 3.9246 (2), 17.6295 (9)
β (°) 104.802 (3)
V3)968.36 (9)
Z4
Radiation typeMo Kα
µ (mm1)0.37
Crystal size (mm)0.30 × 0.18 × 0.11
Data collection
DiffractometerBruker SMART area-detector
Absorption correctionMulti-scan
(SADABS; Sheldrick, 1996)
Tmin, Tmax0.897, 0.961
No. of measured, independent and
observed [I > 2σ(I)] reflections
8150, 2212, 1769
Rint0.026
(sin θ/λ)max1)0.650
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.037, 0.149, 1.18
No. of reflections2212
No. of parameters137
H-atom treatmentH-atom parameters constrained
Δρmax, Δρmin (e Å3)0.30, 0.38

Computer programs: SMART (Bruker, 2004), SAINT (Bruker, 2004), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), X-SEED (Barbour, 2001), publCIF (Westrip, 2009).

 

Acknowledgements

We thank the Department of Science and Technology, India, for use of the diffraction facility at IISc under the IRHPA–DST program; FNK thanks the DST for Fast Track Proposal funding. We also thank VIT University and the University of Malaya for supporting this study.

References

First citationBarbour, L. J. (2001). J. Supramol. Chem. 1, 189–191.  CrossRef CAS Google Scholar
First citationBruker (2004). SAINT and SMART. Bruker AXS Inc., Madison, Wisconsin, USA.  Google Scholar
First citationMeth-Cohn, O. (1993). Heterocycles, 35, 539–557.  CrossRef CAS Google Scholar
First citationSheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.  Google Scholar
First citationSheldrick, G. M. (2008). Acta Cryst. A64, 112–122.  Web of Science CrossRef CAS IUCr Journals Google Scholar
First citationWestrip, S. P. (2009). publCIF. In preparation.  Google Scholar

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