organic compounds\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

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Ethyl {4-[(1,5-di­methyl-2,4-dioxo-2,3,4,5-tetra­hydro-1H-1,5-benzo­diazepin-3-yl)meth­yl]-1,2,3-triazol-1-yl}acetate

aLaboratoire de Chimie Organique Hétérocyclique, Pôle de Compétences Pharmacochimie, Université Mohammed V-Agdal, BP 1014 Avenue Ibn Batout, Rabat, Morocco, bService Commun Rayons-X, Laboratoire de Chimie de Coordination, 205 Route de Narbonne, Toulouse, France, and cDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
*Correspondence e-mail: seikweng@um.edu.my

(Received 27 October 2010; accepted 28 October 2010; online 31 October 2010)

In the title compound, C18H21N5O4, the diazepine ring adopts a boat conformation with the triazolylmethyl-bearing C atom as the prow and the C atoms at the ring junction as the stern.

Related literature

For the structure of 1,5-dimethyl-3-propargyl-1,5-benzodiazepine-2,4-dione, see: Dardouri et al. (2010[Dardouri, R., Ouazzani Chahdi, F., Saffon, N., Essassi, E. M. & Ng, S. W. (2010). Acta Cryst. E66, o1797.]).

[Scheme 1]

Experimental

Crystal data
  • C18H21N5O4

  • Mr = 371.40

  • Monoclinic, P 21 /c

  • a = 8.5452 (2) Å

  • b = 15.9993 (5) Å

  • c = 13.9215 (4) Å

  • β = 106.853 (1)°

  • V = 1821.56 (9) Å3

  • Z = 4

  • Mo Kα radiation

  • μ = 0.10 mm−1

  • T = 293 K

  • 0.40 × 0.10 × 0.05 mm

Data collection
  • Bruker X8 APEXII diffractometer

  • 15511 measured reflections

  • 4129 independent reflections

  • 2909 reflections with I > 2σ(I)

  • Rint = 0.037

  • Standard reflections: 0

Refinement
  • R[F2 > 2σ(F2)] = 0.045

  • wR(F2) = 0.124

  • S = 1.03

  • 4129 reflections

  • 247 parameters

  • H-atom parameters constrained

  • Δρmax = 0.30 e Å−3

  • Δρmin = −0.31 e Å−3

Data collection: APEX2 (Bruker, 2008[Bruker (2008). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 2008[Bruker (2008). APEX2 and SAINT. 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, 2010[Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.]).

Supporting information


Comment top

1,5-Dimethyl-3-propargyl-1,5-benzodiazepine-2,4-dione, whose synthesis was reported recently (Dardouri et al., 2010), possess an acetylenic linkage that can be exploited for the synthesis of other 1,5-benzodiazepine-2,4-dione derivatives. In this study, the compound is reacted with ethyl 2-azidoacetate to yield the title compound (Scheme I, Fig. 1). The ester provides three nitrogen atoms necessary for the formation of the triazolyl ring.

Related literature top

For the structure of 1,5-dimethyl-3-propargyl-1,5-benzodiazepine-2,4-dione, see: Dardouri et al. (2010).

Experimental top

To a solution of 3-propargyl-1,5-dimethyl-1,5-benzodiazepine-2,4-dione (0.23 g,1 mmol) in a t-butyl alcohol/water mixture (1:2, 8 ml) was added copper sulfate pentahydrate (0.25 g,1 mmol), sodium ascorbate (0.29 g, 2 mmol) and ethyl 2-azidoacetate (0.64 g, 5 mmol). The mixture was stirred for two hours. Water (20 ml) was added and the organic compound was extracted with ethyl acetate (2 x 20 ml). The extracts were washed with brine and then dried over sodium sulfate. The compound was recrystallized from an n-hexane/ethyl acetate mixture to give colorless crystals.

Refinement top

H-atoms were placed in calculated positions (C—H 0.93–0.98 Å) and were included in the refinement in the riding model approximation, with U(H) set to 1.2–1.5Ueq(C).

Structure description top

1,5-Dimethyl-3-propargyl-1,5-benzodiazepine-2,4-dione, whose synthesis was reported recently (Dardouri et al., 2010), possess an acetylenic linkage that can be exploited for the synthesis of other 1,5-benzodiazepine-2,4-dione derivatives. In this study, the compound is reacted with ethyl 2-azidoacetate to yield the title compound (Scheme I, Fig. 1). The ester provides three nitrogen atoms necessary for the formation of the triazolyl ring.

For the structure of 1,5-dimethyl-3-propargyl-1,5-benzodiazepine-2,4-dione, see: Dardouri et al. (2010).

Computing details top

Data collection: APEX2 (Bruker, 2008); cell refinement: SAINT (Bruker, 2008); data reduction: SAINT (Bruker, 2008); 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, 2010).

Figures top
[Figure 1] Fig. 1. Anisotropic displacement ellipsoid plot (Barbour, 2001) of C18H21N5O4 at the 50% probability level; hydrogen atoms are drawn as arbitrary radius.
Ethyl {4-[(1,5-dimethyl-2,4-dioxo-2,3,4,5-tetrahydro-1H-1,5- benzodiazepin-3-yl)methyl]-1,2,3-triazol-1-yl}acetate top
Crystal data top
C18H21N5O4F(000) = 784
Mr = 371.40Dx = 1.354 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybcCell parameters from 3798 reflections
a = 8.5452 (2) Åθ = 2.5–26.4°
b = 15.9993 (5) ŵ = 0.10 mm1
c = 13.9215 (4) ÅT = 293 K
β = 106.853 (1)°Prism, colorless
V = 1821.56 (9) Å30.40 × 0.10 × 0.05 mm
Z = 4
Data collection top
Bruker X8 APEXII
diffractometer
2909 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tubeRint = 0.037
Graphite monochromatorθmax = 27.5°, θmin = 2.8°
φ and ω scansh = 1010
15511 measured reflectionsk = 2020
4129 independent reflectionsl = 1818
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)] = 0.045Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.124H-atom parameters constrained
S = 1.03 w = 1/[σ2(Fo2) + (0.052P)2 + 0.6008P]
where P = (Fo2 + 2Fc2)/3
4129 reflections(Δ/σ)max = 0.001
247 parametersΔρmax = 0.30 e Å3
0 restraintsΔρmin = 0.31 e Å3
Crystal data top
C18H21N5O4V = 1821.56 (9) Å3
Mr = 371.40Z = 4
Monoclinic, P21/cMo Kα radiation
a = 8.5452 (2) ŵ = 0.10 mm1
b = 15.9993 (5) ÅT = 293 K
c = 13.9215 (4) Å0.40 × 0.10 × 0.05 mm
β = 106.853 (1)°
Data collection top
Bruker X8 APEXII
diffractometer
2909 reflections with I > 2σ(I)
15511 measured reflectionsRint = 0.037
4129 independent reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0450 restraints
wR(F2) = 0.124H-atom parameters constrained
S = 1.03Δρmax = 0.30 e Å3
4129 reflectionsΔρmin = 0.31 e Å3
247 parameters
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
O10.56199 (17)0.18555 (8)0.67466 (9)0.0438 (3)
O20.81954 (18)0.21921 (9)0.49678 (10)0.0505 (4)
O30.41269 (16)0.12018 (9)0.04809 (9)0.0440 (3)
O40.25337 (19)0.10260 (14)0.05096 (12)0.0829 (7)
N10.78013 (17)0.10102 (8)0.73772 (10)0.0285 (3)
N20.96549 (17)0.11692 (10)0.59493 (10)0.0344 (4)
N30.52214 (17)0.02996 (9)0.35097 (10)0.0314 (3)
N40.52862 (17)0.02234 (9)0.25819 (10)0.0328 (3)
N50.52498 (17)0.10028 (9)0.22117 (10)0.0291 (3)
C10.88147 (19)0.03536 (10)0.72159 (12)0.0271 (4)
C20.8961 (2)0.03761 (11)0.77820 (13)0.0347 (4)
H20.83900.04260.82550.042*
C30.9939 (2)0.10250 (12)0.76516 (15)0.0421 (5)
H31.00370.15050.80420.050*
C41.0772 (2)0.09629 (13)0.69423 (15)0.0449 (5)
H41.14070.14070.68400.054*
C51.0662 (2)0.02442 (13)0.63862 (13)0.0395 (5)
H51.12370.02050.59140.047*
C60.97042 (19)0.04275 (11)0.65161 (12)0.0300 (4)
C70.7764 (2)0.11896 (12)0.84068 (13)0.0385 (4)
H7A0.76590.17810.84860.058*
H7B0.87580.09960.88750.058*
H7C0.68490.09090.85310.058*
C80.6620 (2)0.13566 (10)0.66069 (12)0.0301 (4)
C90.6685 (2)0.11352 (10)0.55590 (11)0.0263 (3)
H90.67980.05280.55140.032*
C100.8228 (2)0.15520 (11)0.54480 (12)0.0332 (4)
C111.1183 (2)0.15061 (15)0.58176 (15)0.0499 (5)
H11A1.12090.21010.59090.075*
H11B1.12370.13780.51540.075*
H11C1.21000.12580.63040.075*
C120.5152 (2)0.14153 (11)0.47517 (12)0.0314 (4)
H12A0.41950.11940.49040.038*
H12B0.50830.20200.47550.038*
C130.51605 (19)0.11257 (10)0.37318 (12)0.0274 (3)
C140.5173 (2)0.15758 (11)0.29023 (12)0.0295 (4)
H140.51360.21540.28300.035*
C150.5444 (2)0.11311 (12)0.12218 (12)0.0339 (4)
H15A0.61630.07030.10960.041*
H15B0.59630.16680.12070.041*
C160.3849 (2)0.11069 (11)0.03967 (13)0.0366 (4)
C170.2699 (3)0.11868 (14)0.13697 (14)0.0487 (5)
H17A0.19600.07480.12940.058*
H17B0.30510.10580.19560.058*
C180.1815 (2)0.19999 (12)0.15270 (14)0.0435 (5)
H18A0.09000.19690.21210.065*
H18B0.25420.24360.16030.065*
H18C0.14310.21200.09580.065*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O10.0564 (9)0.0414 (7)0.0342 (7)0.0164 (6)0.0141 (6)0.0056 (6)
O20.0584 (9)0.0477 (8)0.0410 (8)0.0153 (7)0.0074 (7)0.0153 (6)
O30.0389 (7)0.0690 (9)0.0205 (6)0.0060 (6)0.0030 (5)0.0024 (6)
O40.0371 (9)0.1597 (19)0.0459 (10)0.0232 (10)0.0022 (7)0.0413 (11)
N10.0337 (8)0.0327 (7)0.0201 (7)0.0024 (6)0.0091 (6)0.0031 (5)
N20.0301 (8)0.0491 (9)0.0242 (7)0.0106 (7)0.0080 (6)0.0014 (6)
N30.0320 (8)0.0344 (8)0.0264 (7)0.0013 (6)0.0063 (6)0.0015 (6)
N40.0352 (8)0.0332 (8)0.0274 (7)0.0031 (6)0.0050 (6)0.0005 (6)
N50.0287 (7)0.0341 (8)0.0223 (7)0.0019 (6)0.0040 (5)0.0016 (6)
C10.0246 (8)0.0334 (8)0.0217 (8)0.0037 (7)0.0043 (6)0.0038 (6)
C20.0307 (9)0.0398 (10)0.0312 (9)0.0051 (7)0.0053 (7)0.0024 (7)
C30.0365 (10)0.0369 (10)0.0446 (11)0.0011 (8)0.0013 (8)0.0032 (8)
C40.0312 (10)0.0519 (12)0.0437 (11)0.0111 (8)0.0017 (8)0.0094 (9)
C50.0256 (9)0.0631 (13)0.0273 (9)0.0038 (8)0.0035 (7)0.0092 (9)
C60.0239 (8)0.0429 (10)0.0203 (8)0.0053 (7)0.0018 (6)0.0034 (7)
C70.0472 (11)0.0469 (11)0.0227 (9)0.0019 (9)0.0119 (8)0.0072 (8)
C80.0376 (10)0.0269 (8)0.0262 (8)0.0007 (7)0.0098 (7)0.0017 (6)
C90.0310 (9)0.0263 (8)0.0214 (8)0.0005 (7)0.0069 (6)0.0008 (6)
C100.0395 (10)0.0387 (9)0.0204 (8)0.0080 (8)0.0069 (7)0.0015 (7)
C110.0375 (11)0.0799 (15)0.0324 (10)0.0239 (10)0.0104 (8)0.0009 (10)
C120.0314 (9)0.0361 (9)0.0259 (8)0.0072 (7)0.0072 (7)0.0018 (7)
C130.0229 (8)0.0319 (8)0.0255 (8)0.0013 (6)0.0042 (6)0.0024 (7)
C140.0299 (9)0.0296 (8)0.0272 (8)0.0010 (7)0.0051 (7)0.0016 (7)
C150.0329 (9)0.0448 (10)0.0225 (8)0.0031 (8)0.0055 (7)0.0001 (7)
C160.0348 (10)0.0418 (10)0.0293 (9)0.0072 (8)0.0033 (7)0.0055 (7)
C170.0509 (12)0.0617 (13)0.0231 (9)0.0071 (10)0.0056 (8)0.0067 (9)
C180.0438 (11)0.0441 (11)0.0352 (10)0.0068 (9)0.0002 (8)0.0007 (8)
Geometric parameters (Å, º) top
O1—C81.225 (2)C5—H50.9300
O2—C101.219 (2)C7—H7A0.9600
O3—C161.319 (2)C7—H7B0.9600
O3—C171.464 (2)C7—H7C0.9600
O4—C161.186 (2)C8—C91.518 (2)
N1—C81.360 (2)C9—C121.525 (2)
N1—C11.420 (2)C9—C101.524 (2)
N1—C71.471 (2)C9—H90.9800
N2—C101.362 (2)C11—H11A0.9600
N2—C61.419 (2)C11—H11B0.9600
N2—C111.473 (2)C11—H11C0.9600
N3—N41.3145 (19)C12—C131.495 (2)
N3—C131.362 (2)C12—H12A0.9700
N4—N51.3462 (19)C12—H12B0.9700
N5—C141.344 (2)C13—C141.364 (2)
N5—C151.450 (2)C14—H140.9300
C1—C21.394 (2)C15—C161.507 (2)
C1—C61.404 (2)C15—H15A0.9700
C2—C31.377 (3)C15—H15B0.9700
C2—H20.9300C17—C181.489 (3)
C3—C41.378 (3)C17—H17A0.9700
C3—H30.9300C17—H17B0.9700
C4—C51.374 (3)C18—H18A0.9600
C4—H40.9300C18—H18B0.9600
C5—C61.394 (3)C18—H18C0.9600
C16—O3—C17116.81 (15)C10—C9—H9108.9
C8—N1—C1121.62 (13)O2—C10—N2122.21 (16)
C8—N1—C7117.89 (14)O2—C10—C9122.71 (16)
C1—N1—C7119.01 (14)N2—C10—C9115.05 (15)
C10—N2—C6122.59 (14)N2—C11—H11A109.5
C10—N2—C11117.80 (16)N2—C11—H11B109.5
C6—N2—C11119.40 (15)H11A—C11—H11B109.5
N4—N3—C13109.17 (13)N2—C11—H11C109.5
N3—N4—N5106.71 (13)H11A—C11—H11C109.5
C14—N5—N4111.01 (13)H11B—C11—H11C109.5
C14—N5—C15128.78 (14)C13—C12—C9111.66 (13)
N4—N5—C15119.93 (14)C13—C12—H12A109.3
C2—C1—C6119.01 (15)C9—C12—H12A109.3
C2—C1—N1119.29 (15)C13—C12—H12B109.3
C6—C1—N1121.68 (15)C9—C12—H12B109.3
C3—C2—C1121.03 (17)H12A—C12—H12B107.9
C3—C2—H2119.5C14—C13—N3108.06 (15)
C1—C2—H2119.5C14—C13—C12130.07 (15)
C2—C3—C4119.94 (18)N3—C13—C12121.82 (14)
C2—C3—H3120.0N5—C14—C13105.05 (15)
C4—C3—H3120.0N5—C14—H14127.5
C5—C4—C3119.93 (18)C13—C14—H14127.5
C5—C4—H4120.0N5—C15—C16113.16 (14)
C3—C4—H4120.0N5—C15—H15A108.9
C4—C5—C6121.26 (17)C16—C15—H15A108.9
C4—C5—H5119.4N5—C15—H15B108.9
C6—C5—H5119.4C16—C15—H15B108.9
C5—C6—C1118.78 (16)H15A—C15—H15B107.8
C5—C6—N2119.78 (15)O4—C16—O3124.56 (17)
C1—C6—N2121.44 (15)O4—C16—C15125.75 (17)
N1—C7—H7A109.5O3—C16—C15109.69 (15)
N1—C7—H7B109.5O3—C17—C18111.90 (16)
H7A—C7—H7B109.5O3—C17—H17A109.2
N1—C7—H7C109.5C18—C17—H17A109.2
H7A—C7—H7C109.5O3—C17—H17B109.2
H7B—C7—H7C109.5C18—C17—H17B109.2
O1—C8—N1122.20 (15)H17A—C17—H17B107.9
O1—C8—C9121.75 (15)C17—C18—H18A109.5
N1—C8—C9115.91 (14)C17—C18—H18B109.5
C8—C9—C12112.12 (13)H18A—C18—H18B109.5
C8—C9—C10105.62 (13)C17—C18—H18C109.5
C12—C9—C10112.32 (14)H18A—C18—H18C109.5
C8—C9—H9108.9H18B—C18—H18C109.5
C12—C9—H9108.9
C13—N3—N4—N50.60 (17)O1—C8—C9—C10107.96 (18)
N3—N4—N5—C140.41 (17)N1—C8—C9—C1067.92 (18)
N3—N4—N5—C15174.79 (13)C6—N2—C10—O2179.53 (16)
C8—N1—C1—C2127.81 (17)C11—N2—C10—O25.9 (3)
C7—N1—C1—C238.0 (2)C6—N2—C10—C91.3 (2)
C8—N1—C1—C653.7 (2)C11—N2—C10—C9175.88 (15)
C7—N1—C1—C6140.50 (16)C8—C9—C10—O2103.15 (18)
C6—C1—C2—C31.1 (2)C12—C9—C10—O219.4 (2)
N1—C1—C2—C3179.65 (15)C8—C9—C10—N275.09 (17)
C1—C2—C3—C40.9 (3)C12—C9—C10—N2162.40 (14)
C2—C3—C4—C51.8 (3)C8—C9—C12—C13174.76 (14)
C3—C4—C5—C60.7 (3)C10—C9—C12—C1366.48 (18)
C4—C5—C6—C11.3 (2)N4—N3—C13—C140.58 (18)
C4—C5—C6—N2178.22 (15)N4—N3—C13—C12177.28 (14)
C2—C1—C6—C52.2 (2)C9—C12—C13—C14117.25 (19)
N1—C1—C6—C5179.29 (15)C9—C12—C13—N360.1 (2)
C2—C1—C6—N2177.35 (14)N4—N5—C14—C130.06 (18)
N1—C1—C6—N21.2 (2)C15—N5—C14—C13173.80 (15)
C10—N2—C6—C5131.51 (17)N3—C13—C14—N50.31 (18)
C11—N2—C6—C543.0 (2)C12—C13—C14—N5177.32 (16)
C10—N2—C6—C149.0 (2)C14—N5—C15—C1697.7 (2)
C11—N2—C6—C1136.53 (17)N4—N5—C15—C1689.08 (19)
C1—N1—C8—O1171.63 (16)C17—O3—C16—O41.3 (3)
C7—N1—C8—O15.6 (2)C17—O3—C16—C15179.53 (16)
C1—N1—C8—C912.5 (2)N5—C15—C16—O42.8 (3)
C7—N1—C8—C9178.49 (14)N5—C15—C16—O3178.05 (15)
O1—C8—C9—C1214.7 (2)C16—O3—C17—C1879.5 (2)
N1—C8—C9—C12169.44 (14)

Experimental details

Crystal data
Chemical formulaC18H21N5O4
Mr371.40
Crystal system, space groupMonoclinic, P21/c
Temperature (K)293
a, b, c (Å)8.5452 (2), 15.9993 (5), 13.9215 (4)
β (°) 106.853 (1)
V3)1821.56 (9)
Z4
Radiation typeMo Kα
µ (mm1)0.10
Crystal size (mm)0.40 × 0.10 × 0.05
Data collection
DiffractometerBruker X8 APEXII
Absorption correction
No. of measured, independent and
observed [I > 2σ(I)] reflections
15511, 4129, 2909
Rint0.037
(sin θ/λ)max1)0.650
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.045, 0.124, 1.03
No. of reflections4129
No. of parameters247
H-atom treatmentH-atom parameters constrained
Δρmax, Δρmin (e Å3)0.30, 0.31

Computer programs: APEX2 (Bruker, 2008), SAINT (Bruker, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), X-SEED (Barbour, 2001), publCIF (Westrip, 2010).

 

Acknowledgements

We thank Université Mohammed V-Agdal and the University of Malaya for supporting this study.

References

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