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The title compound, C20H15N3O6·C3H7NO, was synthesized by the reaction of methyl cyano­acetate, 4-nitro­benz­aldehyde and 4-hydroxy­quinolin-2-one in EtOH catalysed by KF-alumina, followed by crystallization from dimethylformamide. X-ray analysis reveals that the pyran ring adopts a boat conform­ation.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536804022093/is6003sup1.cif
Contains datablocks 1757, I

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S1600536804022093/is6003Isup2.hkl
Contains datablock I

CCDC reference: 252989

Key indicators

  • Single-crystal X-ray study
  • T = 295 K
  • Mean [sigma](C-C) = 0.004 Å
  • Disorder in solvent or counterion
  • R factor = 0.065
  • wR factor = 0.209
  • Data-to-parameter ratio = 12.3

checkCIF/PLATON results

No syntax errors found



Alert level B PLAT201_ALERT_2_B Isotropic non-H Atoms in Main Residue(s) ....... 2
Alert level C PLAT244_ALERT_4_C Low Solvent U(eq) as Compared to Neighbors for N4' PLAT244_ALERT_4_C Low Solvent U(eq) as Compared to Neighbors for C21' PLAT244_ALERT_4_C Low Solvent U(eq) as Compared to Neighbors for N4 PLAT302_ALERT_4_C Anion/Solvent Disorder ......................... 50.00 Perc. PLAT430_ALERT_2_C Short Inter D...A Contact O6 .. O6 .. 2.89 Ang.
0 ALERT level A = In general: serious problem 1 ALERT level B = Potentially serious problem 5 ALERT level C = Check and explain 0 ALERT level G = General alerts; check 0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 2 ALERT type 2 Indicator that the structure model may be wrong or deficient 0 ALERT type 3 Indicator that the structure quality may be low 4 ALERT type 4 Improvement, methodology, query or suggestion

Computing details top

Data collection: XSCANS (Siemens, 1994); cell refinement: XSCANS; data reduction: SHELXTL (Sheldrick, 1997); program(s) used to solve structure: SHELXTL; program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.

methyl 2-amino-4-(4-nitrophenyl)-5,6-dihydro-4H-pyrano [3,2-c] quinoline-5-one-3-carboxylate dimethylformamide solvate top
Crystal data top
C20H15N3O6·C3H7NOZ = 2
Mr = 466.45F(000) = 488
Triclinic, P1Dx = 1.406 Mg m3
Hall symbol: -P 1Melting point = 548–550 K
a = 8.312 (1) ÅMo Kα radiation, λ = 0.71073 Å
b = 11.696 (2) ÅCell parameters from 33 reflections
c = 11.705 (1) Åθ = 3.3–15.3°
α = 97.42 (1)°µ = 0.11 mm1
β = 101.634 (9)°T = 295 K
γ = 93.01 (1)°Block, colorless
V = 1101.6 (3) Å30.58 × 0.36 × 0.24 mm
Data collection top
Siemens P4
diffractometer
Rint = 0.010
Radiation source: normal-focus sealed tubeθmax = 25.8°, θmin = 1.8°
Graphite monochromatorh = 010
ω scansk = 1414
4659 measured reflectionsl = 1414
4199 independent reflections3 standard reflections every 97 reflections
2437 reflections with I > 2σ(I) intensity decay: 4.4%
Refinement top
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.065H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.209 w = 1/[σ2(Fo2) + (0.1169P)2]
where P = (Fo2 + 2Fc2)/3
S = 1.07(Δ/σ)max < 0.001
4199 reflectionsΔρmax = 0.50 e Å3
341 parametersΔρmin = 0.59 e Å3
8 restraintsExtinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.019 (5)
Special details top

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/UeqOcc. (<1)
O10.6462 (2)0.21041 (17)0.56822 (17)0.0504 (6)
O20.1562 (2)0.03109 (18)0.63596 (17)0.0533 (6)
O30.6733 (3)0.10630 (18)0.94637 (17)0.0542 (6)
O40.9157 (2)0.14923 (19)0.8980 (2)0.0608 (6)
O50.2561 (4)0.6361 (3)0.9357 (3)0.1105 (11)*
O60.1711 (4)0.5338 (3)1.0541 (3)0.0946 (9)*
N10.1719 (3)0.0704 (2)0.4533 (2)0.0463 (6)
N20.8953 (3)0.2166 (2)0.6806 (3)0.0618 (8)
H2A0.96720.21020.74310.074*
H2B0.92650.23850.62060.074*
N30.2314 (4)0.5454 (3)0.9712 (3)0.0755 (9)
C10.4859 (3)0.1628 (2)0.5346 (2)0.0409 (7)
C20.4151 (4)0.1600 (2)0.4116 (2)0.0440 (7)
C30.4977 (4)0.2017 (3)0.3298 (3)0.0596 (9)
H30.60800.22930.35300.071*
C40.4152 (5)0.2014 (3)0.2155 (3)0.0696 (10)
H40.46890.23010.16140.083*
C50.2495 (5)0.1578 (3)0.1807 (3)0.0696 (10)
H50.19350.15910.10370.084*
C60.1691 (4)0.1134 (3)0.2580 (3)0.0582 (9)
H60.06030.08260.23310.070*
C70.2513 (4)0.1144 (2)0.3746 (2)0.0455 (7)
C80.2370 (3)0.0729 (2)0.5710 (2)0.0408 (7)
C90.4033 (3)0.1267 (2)0.6126 (2)0.0377 (6)
C100.4773 (3)0.1448 (2)0.7426 (2)0.0385 (6)
H100.44540.07650.77600.046*
C110.6633 (3)0.1577 (2)0.7612 (2)0.0414 (7)
C120.7367 (3)0.1930 (2)0.6770 (3)0.0451 (7)
C130.4097 (3)0.2501 (2)0.8020 (2)0.0367 (6)
C140.4602 (4)0.3610 (2)0.7861 (3)0.0536 (8)
H140.53610.37020.73880.064*
C150.4011 (4)0.4573 (3)0.8384 (3)0.0600 (9)
H150.43480.53090.82560.072*
C160.2915 (4)0.4430 (3)0.9096 (3)0.0502 (8)
C170.2369 (4)0.3354 (3)0.9271 (3)0.0564 (8)
H170.16190.32700.97510.068*
C180.2952 (4)0.2398 (3)0.8720 (3)0.0507 (8)
H180.25680.16650.88210.061*
C190.7649 (4)0.1390 (2)0.8718 (3)0.0462 (7)
C200.7638 (5)0.0869 (3)1.0602 (3)0.0696 (10)
H20A0.82690.15701.09990.083*
H20B0.83660.02711.05000.083*
H20C0.68790.06371.10650.083*
O70.042 (9)0.304 (15)0.471 (6)0.161 (5)0.497 (8)
N40.1363 (15)0.4140 (15)0.4024 (9)0.079 (9)0.497 (8)
C210.0896 (15)0.3570 (8)0.4803 (11)0.117 (5)0.497 (8)
H210.16600.35700.55030.140*0.497 (8)
C220.036 (2)0.4194 (15)0.2910 (10)0.164 (5)0.497 (8)
H22A0.07410.37050.23150.197*0.497 (8)
H22B0.04000.49770.27450.197*0.497 (8)
H22C0.07610.39390.29110.197*0.497 (8)
C230.2917 (14)0.4775 (11)0.4329 (19)0.151 (7)0.497 (8)
H23A0.27850.55650.46120.181*0.497 (8)
H23B0.34000.47450.36480.181*0.497 (8)
H23C0.36230.44460.49350.181*0.497 (8)
O7'0.028 (9)0.303 (14)0.472 (6)0.161 (5)0.503 (8)
N4'0.1264 (15)0.4172 (15)0.3969 (10)0.090 (9)0.503 (8)
C21'0.0029 (12)0.3463 (7)0.3889 (11)0.084 (3)0.503 (8)
H21'0.07750.32870.31710.101*0.503 (8)
C22'0.234 (2)0.4330 (15)0.5084 (11)0.164 (5)0.503 (8)
H22D0.27310.51320.53020.197*0.503 (8)
H22E0.32670.38750.50500.197*0.503 (8)
H22F0.17730.40900.56590.197*0.503 (8)
C23'0.169 (2)0.4589 (12)0.2983 (14)0.135 (6)0.503 (8)
H23D0.27400.43330.28860.162*0.503 (8)
H23E0.17560.54190.31020.162*0.503 (8)
H23F0.08680.42990.22900.162*0.503 (8)
H1N0.079 (5)0.039 (3)0.428 (3)0.070 (11)*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O10.0398 (11)0.0559 (12)0.0535 (12)0.0069 (9)0.0051 (9)0.0120 (10)
O20.0388 (11)0.0671 (14)0.0478 (12)0.0150 (10)0.0020 (10)0.0039 (10)
O30.0517 (12)0.0574 (13)0.0488 (12)0.0013 (10)0.0030 (10)0.0134 (10)
O40.0382 (12)0.0617 (14)0.0738 (15)0.0004 (10)0.0092 (10)0.0113 (11)
N10.0380 (14)0.0475 (14)0.0457 (14)0.0080 (11)0.0024 (12)0.0008 (11)
N20.0368 (14)0.0767 (19)0.0713 (18)0.0053 (13)0.0085 (13)0.0169 (15)
N30.086 (2)0.0611 (19)0.070 (2)0.0087 (16)0.0019 (17)0.0043 (15)
C10.0378 (15)0.0336 (14)0.0480 (16)0.0007 (11)0.0048 (13)0.0017 (12)
C20.0511 (17)0.0369 (15)0.0414 (16)0.0023 (13)0.0067 (13)0.0014 (12)
C30.068 (2)0.057 (2)0.0528 (19)0.0044 (16)0.0138 (17)0.0065 (15)
C40.096 (3)0.065 (2)0.049 (2)0.001 (2)0.018 (2)0.0093 (16)
C50.095 (3)0.065 (2)0.0420 (18)0.004 (2)0.0008 (19)0.0046 (16)
C60.068 (2)0.0517 (18)0.0453 (18)0.0028 (16)0.0064 (16)0.0006 (14)
C70.0537 (17)0.0359 (15)0.0415 (16)0.0037 (13)0.0025 (14)0.0027 (12)
C80.0352 (14)0.0387 (15)0.0425 (16)0.0014 (12)0.0007 (12)0.0008 (12)
C90.0346 (14)0.0339 (14)0.0413 (15)0.0002 (11)0.0031 (12)0.0022 (11)
C100.0345 (14)0.0351 (14)0.0429 (15)0.0036 (11)0.0011 (12)0.0078 (11)
C110.0351 (14)0.0348 (14)0.0508 (16)0.0011 (11)0.0017 (13)0.0066 (12)
C120.0356 (15)0.0403 (15)0.0547 (18)0.0000 (12)0.0021 (13)0.0029 (13)
C130.0334 (13)0.0357 (14)0.0346 (14)0.0045 (11)0.0057 (11)0.0043 (11)
C140.063 (2)0.0432 (17)0.0567 (18)0.0039 (15)0.0199 (16)0.0069 (14)
C150.075 (2)0.0370 (16)0.065 (2)0.0011 (15)0.0106 (18)0.0069 (15)
C160.0456 (17)0.0440 (17)0.0524 (17)0.0047 (13)0.0008 (14)0.0079 (13)
C170.0534 (18)0.058 (2)0.0568 (19)0.0010 (15)0.0155 (15)0.0002 (15)
C180.0503 (17)0.0434 (17)0.0582 (19)0.0055 (13)0.0152 (15)0.0050 (14)
C190.0421 (17)0.0321 (14)0.0581 (18)0.0021 (12)0.0024 (14)0.0034 (13)
C200.081 (2)0.064 (2)0.055 (2)0.0078 (19)0.0134 (18)0.0180 (17)
O70.201 (10)0.118 (4)0.217 (5)0.029 (11)0.141 (6)0.059 (4)
N40.114 (17)0.071 (12)0.081 (10)0.029 (10)0.061 (10)0.047 (8)
C210.062 (6)0.064 (6)0.212 (16)0.003 (5)0.027 (9)0.027 (8)
C220.191 (13)0.168 (11)0.113 (8)0.099 (10)0.015 (8)0.016 (7)
C230.119 (11)0.089 (8)0.25 (2)0.014 (8)0.066 (14)0.023 (11)
O7'0.201 (10)0.118 (4)0.217 (5)0.029 (11)0.141 (6)0.059 (4)
N4'0.067 (10)0.057 (11)0.137 (17)0.014 (8)0.016 (9)0.001 (9)
C21'0.086 (7)0.084 (6)0.096 (7)0.004 (5)0.047 (6)0.023 (5)
C22'0.191 (13)0.168 (11)0.113 (8)0.099 (10)0.015 (8)0.016 (7)
C23'0.138 (12)0.106 (9)0.210 (16)0.048 (9)0.100 (13)0.097 (11)
Geometric parameters (Å, º) top
O1—C11.376 (3)C13—C141.389 (4)
O1—C121.388 (3)C14—C151.373 (4)
O2—C81.239 (3)C14—H140.93
O3—C191.346 (4)C15—C161.371 (4)
O3—C201.444 (3)C15—H150.93
O4—C191.224 (3)C16—C171.370 (4)
O5—N31.211 (4)C17—C181.377 (4)
O6—N31.198 (4)C17—H170.93
N1—C81.371 (3)C18—H180.93
N1—C71.371 (4)C20—H20A0.96
N1—H1N0.82 (4)C20—H20B0.96
N2—C121.324 (4)C20—H20C0.96
N2—H2A0.86O7—C211.210 (3)
N2—H2B0.86N4—C211.303 (3)
N3—C161.479 (4)N4—C231.411 (3)
C1—C91.343 (4)N4—C221.412 (3)
C1—C21.437 (4)C21—H210.93
C2—C71.397 (4)C22—H22A0.96
C2—C31.405 (4)C22—H22B0.96
C3—C41.375 (4)C22—H22C0.96
C3—H30.93C23—H23A0.96
C4—C51.403 (5)C23—H23B0.96
C4—H40.93C23—H23C0.96
C5—C61.365 (5)O7'—C21'1.210 (3)
C5—H50.93N4'—C21'1.303 (3)
C6—C71.396 (4)N4'—C23'1.410 (3)
C6—H60.93N4'—C22'1.412 (3)
C8—C91.451 (4)C21'—H21'0.93
C9—C101.504 (4)C22'—H22D0.96
C10—C111.514 (4)C22'—H22E0.96
C10—C131.525 (4)C22'—H22F0.96
C10—H100.98C23'—H23D0.96
C11—C121.355 (4)C23'—H23E0.96
C11—C191.445 (4)C23'—H23F0.96
C13—C181.385 (4)
C1—O1—C12118.1 (2)C18—C13—C10122.1 (2)
C19—O3—C20115.8 (2)C14—C13—C10120.6 (3)
C8—N1—C7125.2 (3)C15—C14—C13121.8 (3)
C8—N1—H1N117 (2)C15—C14—H14119.1
C7—N1—H1N118 (2)C13—C14—H14119.1
C12—N2—H2A120.0C16—C15—C14118.7 (3)
C12—N2—H2B120.0C16—C15—H15120.6
H2A—N2—H2B120.0C14—C15—H15120.6
O6—N3—O5125.5 (4)C17—C16—C15121.6 (3)
O6—N3—C16118.6 (3)C17—C16—N3118.5 (3)
O5—N3—C16115.8 (3)C15—C16—N3119.9 (3)
C9—C1—O1121.9 (2)C16—C17—C18118.7 (3)
C9—C1—C2123.9 (3)C16—C17—H17120.6
O1—C1—C2114.2 (2)C18—C17—H17120.6
C7—C2—C3119.5 (3)C17—C18—C13121.8 (3)
C7—C2—C1115.9 (3)C17—C18—H18119.1
C3—C2—C1124.6 (3)C13—C18—H18119.1
C4—C3—C2119.9 (3)O4—C19—O3122.0 (3)
C4—C3—H3120.0O4—C19—C11126.4 (3)
C2—C3—H3120.0O3—C19—C11111.6 (2)
C3—C4—C5119.7 (3)O3—C20—H20A109.5
C3—C4—H4120.2O3—C20—H20B109.5
C5—C4—H4120.2H20A—C20—H20B109.5
C6—C5—C4121.1 (3)O3—C20—H20C109.5
C6—C5—H5119.4H20A—C20—H20C109.5
C4—C5—H5119.4H20B—C20—H20C109.5
C5—C6—C7119.6 (3)C21—N4—C23118.5 (11)
C5—C6—H6120.2C21—N4—C22123.0 (13)
C7—C6—H6120.2C23—N4—C22118.5 (13)
N1—C7—C6120.2 (3)O7—C21—N4127.1 (16)
N1—C7—C2119.7 (3)O7—C21—H21116.5
C6—C7—C2120.1 (3)N4—C21—H21116.5
O2—C8—N1120.9 (2)C21'—N4'—C23'122.8 (10)
O2—C8—C9123.2 (2)C21'—N4'—C22'114.0 (13)
N1—C8—C9115.9 (3)C23'—N4'—C22'122.3 (13)
C1—C9—C8119.2 (2)O7'—C21'—N4'122 (2)
C1—C9—C10121.5 (2)O7'—C21'—H21'119.2
C8—C9—C10119.3 (2)N4'—C21'—H21'119.2
C9—C10—C11109.4 (2)N4'—C22'—H22D109.5
C9—C10—C13109.5 (2)N4'—C22'—H22E109.5
C11—C10—C13112.0 (2)H22D—C22'—H22E109.5
C9—C10—H10108.6N4'—C22'—H22F109.5
C11—C10—H10108.6H22D—C22'—H22F109.5
C13—C10—H10108.6H22E—C22'—H22F109.5
C12—C11—C19119.0 (3)N4'—C23'—H23D109.5
C12—C11—C10120.5 (2)N4'—C23'—H23E109.5
C19—C11—C10120.4 (3)H23D—C23'—H23E109.5
N2—C12—C11129.0 (3)N4'—C23'—H23F109.5
N2—C12—O1109.2 (3)H23D—C23'—H23F109.5
C11—C12—O1121.8 (2)H23E—C23'—H23F109.5
C18—C13—C14117.4 (3)
C12—O1—C1—C917.1 (4)C13—C10—C11—C1978.4 (3)
C12—O1—C1—C2165.4 (2)C19—C11—C12—N21.6 (5)
C9—C1—C2—C71.3 (4)C10—C11—C12—N2174.9 (3)
O1—C1—C2—C7178.8 (2)C19—C11—C12—O1178.8 (2)
C9—C1—C2—C3177.3 (3)C10—C11—C12—O14.7 (4)
O1—C1—C2—C30.2 (4)C1—O1—C12—N2163.3 (2)
C7—C2—C3—C42.6 (4)C1—O1—C12—C1117.0 (4)
C1—C2—C3—C4176.0 (3)C9—C10—C13—C18106.5 (3)
C2—C3—C4—C51.0 (5)C11—C10—C13—C18132.0 (3)
C3—C4—C5—C61.2 (5)C9—C10—C13—C1472.6 (3)
C4—C5—C6—C71.9 (5)C11—C10—C13—C1448.9 (3)
C8—N1—C7—C6176.1 (3)C18—C13—C14—C150.7 (4)
C8—N1—C7—C24.0 (4)C10—C13—C14—C15179.9 (3)
C5—C6—C7—N1179.8 (3)C13—C14—C15—C161.2 (5)
C5—C6—C7—C20.3 (5)C14—C15—C16—C171.8 (5)
C3—C2—C7—N1178.0 (3)C14—C15—C16—N3177.3 (3)
C1—C2—C7—N13.3 (4)O6—N3—C16—C1717.8 (5)
C3—C2—C7—C61.9 (4)O5—N3—C16—C17165.9 (3)
C1—C2—C7—C6176.8 (3)O6—N3—C16—C15161.3 (3)
C7—N1—C8—O2179.9 (3)O5—N3—C16—C1515.0 (5)
C7—N1—C8—C90.0 (4)C15—C16—C17—C180.5 (5)
O1—C1—C9—C8177.5 (2)N3—C16—C17—C18178.6 (3)
C2—C1—C9—C85.2 (4)C16—C17—C18—C131.4 (5)
O1—C1—C9—C104.7 (4)C14—C13—C18—C172.0 (4)
C2—C1—C9—C10172.6 (2)C10—C13—C18—C17178.9 (3)
O2—C8—C9—C1175.6 (3)C20—O3—C19—O41.5 (4)
N1—C8—C9—C14.5 (4)C20—O3—C19—C11179.2 (2)
O2—C8—C9—C106.6 (4)C12—C11—C19—O41.8 (4)
N1—C8—C9—C10173.4 (2)C10—C11—C19—O4178.3 (3)
C1—C9—C10—C1123.7 (3)C12—C11—C19—O3178.9 (2)
C8—C9—C10—C11158.5 (2)C10—C11—C19—O32.3 (3)
C1—C9—C10—C1399.4 (3)C23—N4—C21—O7175 (12)
C8—C9—C10—C1378.4 (3)C22—N4—C21—O72 (12)
C9—C10—C11—C1223.5 (3)C23'—N4'—C21'—O7'173 (11)
C13—C10—C11—C1298.1 (3)C22'—N4'—C21'—O7'3 (11)
C9—C10—C11—C19160.0 (2)
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N1—H1N···O2i0.82 (4)2.03 (4)2.851 (3)177 (3)
N2—H2A···O40.862.142.735 (4)126
N2—H2B···O7ii0.862.052.901 (19)169
N2—H2B···O7ii0.862.072.92 (2)172
Symmetry codes: (i) x, y, z+1; (ii) x+1, y, z.
 

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