organic compounds
1-[(1,3-Dithiolan-2-yl)methyl]-8-nitro-6-propyl-1,2,3,5,6,7-hexahydroimidazo[1,2-c]pyrimidine
aShandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, People's Republic of China, and bSchool of Sciences, University of Jinan, People's Republic of China
*Correspondence e-mail: chm_tianzz@ujn.edu.cn
In the title compound, C13H22N4O2S2, the six-membered ring displays a half-chair conformation. The olefin amine unit is close to being coplanar with the imidazolidine ring (r.m.s. deviation = 0.059 Å). The dithiolane ring adopts a twisted conformation. In the crystal, molecules are linked by weak C—H⋯O interactions.
Related literature
For related structures, see Tian et al. (2010); Li et al. (2010). For background to neonicotinoid insecticides, see Mori et al. (2001); Ohno et al. (2009); Jeschke et al. (2008); Kagabu (1997); Tian et al. (2007).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2005); cell SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SIR97 (Altomare et al., 1999); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supporting information
https://doi.org/10.1107/S1600536810033829/hb5612sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810033829/hb5612Isup2.hkl
A mixture of 1-((1,3-dithiolan-2-yl)methyl)-2-(nitromethylene)imidazolidine (0.75 mmol), formaldehyde (1.6 mmol, in the form of 35% aqueous solution), and propylamine (0.83 mmol) in ethanol (5 ml) was stirred overnight. The solution thus obtained was concentrated under vacuum and further purified by flash
to give the desired product. Colourless prisms of (I) were obtained by slow evaporation of a solution of dichloromethane and ethyl acetate of the title compound.All H atoms were placed in their calculated positions and then refined using riding model with C—H = 0.96–0.98 Å, Uiso(H) = 1.2 (1.5 for methyl groups) times Ueq(C).
Neonicotinoid inseticides have become an important chemical class of insecticides (Ohno et al., 2009 and Jeschke et al., 2008). We have synthesized a series of new compounds by introducing sulfur atoms into the lead struture to improve the lipid solubility of neonicotinoids insecticides. in which the title compound exhibited moderate insecticidal activities against pea aphids.
The structure of the title compound is shown in Fig. 1 with the atom-numbering scheme. The title compound is homolog of 1-[(1,3-Dithiolan-2-yl)methyl]-6-methyl- 8-nitro-1,2,3,5,6,7-hexahydroimidazo- [1,2-c]pyrimidine (Tian et al., 2010). The six-membered ring displays an half-chair conformation. The olefin-amine moity is close to being coplanar with imidazolidine ring. The dithiolane is in a twisted conformation [C9—C10—S1 = 110.31 (13)° and C9—S2—C8 = 94.61 (8)°]. The packing of the molecules is mainly stabilized by C—H···O interactions (Table 1).
For related structures, see Tian et al. (2010); Li et al. (2010). For background to neonicotinoid insecticides, see Mori et al. (2001); Ohno et al. (2009); Jeschke et al. (2008); Kagabu (1997); Tian et al. (2007).
Data collection: APEX2 (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); program(s) used to solve structure: SIR97 (Altomare et al., 1999); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: WinGX (Farrugia, 1999).Fig. 1. The molecular structure of (I) with displacement ellipsoids drawn at the 30% probability level. The H atoms are shown as spheres of arbitrary size. |
C13H22N4O2S2 | F(000) = 704 |
Mr = 330.47 | Dx = 1.369 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.7107 Å |
Hall symbol: -P 2ybc | Cell parameters from 7164 reflections |
a = 11.9680 (3) Å | θ = 3.3–28.9° |
b = 13.6304 (3) Å | µ = 0.34 mm−1 |
c = 10.8866 (3) Å | T = 293 K |
β = 115.465 (3)° | Prism, colourless |
V = 1603.38 (8) Å3 | 0.45 × 0.41 × 0.26 mm |
Z = 4 |
Bruker APEXII CCD diffractometer | 3256 independent reflections |
Radiation source: fine-focus sealed tube | 2486 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.024 |
Detector resolution: 16.0355 pixels mm-1 | θmax = 26.4°, θmin = 3.5° |
φ and ω scans | h = −14→14 |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | k = −17→17 |
Tmin = 0.917, Tmax = 1.0 | l = −13→13 |
13404 measured reflections |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.033 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.096 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0605P)2] where P = (Fo2 + 2Fc2)/3 |
3256 reflections | (Δ/σ)max < 0.001 |
191 parameters | Δρmax = 0.22 e Å−3 |
0 restraints | Δρmin = −0.16 e Å−3 |
C13H22N4O2S2 | V = 1603.38 (8) Å3 |
Mr = 330.47 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 11.9680 (3) Å | µ = 0.34 mm−1 |
b = 13.6304 (3) Å | T = 293 K |
c = 10.8866 (3) Å | 0.45 × 0.41 × 0.26 mm |
β = 115.465 (3)° |
Bruker APEXII CCD diffractometer | 3256 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 2486 reflections with I > 2σ(I) |
Tmin = 0.917, Tmax = 1.0 | Rint = 0.024 |
13404 measured reflections |
R[F2 > 2σ(F2)] = 0.033 | 0 restraints |
wR(F2) = 0.096 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.22 e Å−3 |
3256 reflections | Δρmin = −0.16 e Å−3 |
191 parameters |
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. |
x | y | z | Uiso*/Ueq | ||
C1 | 0.21596 (14) | 0.03042 (13) | 0.24992 (18) | 0.0490 (4) | |
H1A | 0.1584 | 0.0170 | 0.1565 | 0.059* | |
H1B | 0.1937 | −0.0110 | 0.3083 | 0.059* | |
C2 | 0.30273 (15) | 0.15638 (14) | 0.41120 (18) | 0.0527 (4) | |
H2A | 0.2960 | 0.1151 | 0.4803 | 0.063* | |
H2B | 0.2949 | 0.2242 | 0.4336 | 0.063* | |
C3 | 0.52500 (16) | 0.21274 (12) | 0.46180 (18) | 0.0488 (4) | |
H3B | 0.5517 | 0.2262 | 0.5578 | 0.059* | |
H3A | 0.5015 | 0.2737 | 0.4112 | 0.059* | |
C4 | 0.62423 (15) | 0.15974 (12) | 0.43666 (18) | 0.0489 (4) | |
H4A | 0.6609 | 0.2028 | 0.3931 | 0.059* | |
H4B | 0.6889 | 0.1360 | 0.5214 | 0.059* | |
C5 | 0.44343 (13) | 0.07042 (11) | 0.34006 (14) | 0.0358 (3) | |
C6 | 0.34568 (13) | 0.00437 (12) | 0.26942 (15) | 0.0392 (4) | |
C7 | 0.58540 (13) | 0.05456 (12) | 0.23001 (15) | 0.0389 (4) | |
H7B | 0.6083 | 0.1149 | 0.1993 | 0.047* | |
H7A | 0.5103 | 0.0303 | 0.1563 | 0.047* | |
C8 | 0.68837 (13) | −0.02085 (12) | 0.25948 (15) | 0.0372 (3) | |
H8 | 0.6626 | −0.0827 | 0.2855 | 0.045* | |
C9 | 0.88413 (18) | 0.07980 (17) | 0.2809 (2) | 0.0653 (6) | |
H9A | 0.8400 | 0.1417 | 0.2552 | 0.078* | |
H9B | 0.9721 | 0.0936 | 0.3266 | 0.078* | |
C10 | 0.85620 (19) | 0.01841 (19) | 0.1568 (2) | 0.0737 (6) | |
H10B | 0.9206 | −0.0304 | 0.1765 | 0.088* | |
H10A | 0.8548 | 0.0597 | 0.0836 | 0.088* | |
C11 | 0.19972 (16) | 0.19983 (15) | 0.17239 (19) | 0.0577 (5) | |
H11A | 0.2578 | 0.1771 | 0.1382 | 0.069* | |
H11B | 0.2256 | 0.2647 | 0.2106 | 0.069* | |
C12 | 0.07252 (19) | 0.20656 (19) | 0.0556 (2) | 0.0789 (7) | |
H12B | 0.0785 | 0.2407 | −0.0195 | 0.095* | |
H12A | 0.0422 | 0.1409 | 0.0250 | 0.095* | |
C13 | −0.01760 (19) | 0.25861 (18) | 0.0930 (3) | 0.0896 (8) | |
H13B | −0.0983 | 0.2561 | 0.0181 | 0.134* | |
H13C | 0.0073 | 0.3258 | 0.1140 | 0.134* | |
H13A | −0.0200 | 0.2276 | 0.1709 | 0.134* | |
N1 | 0.55919 (10) | 0.07677 (9) | 0.34598 (13) | 0.0372 (3) | |
N2 | 0.42417 (11) | 0.14173 (10) | 0.41168 (13) | 0.0436 (3) | |
N3 | 0.20390 (12) | 0.13306 (11) | 0.28063 (14) | 0.0472 (4) | |
N4 | 0.36386 (12) | −0.08788 (10) | 0.23411 (14) | 0.0439 (3) | |
O1 | 0.46924 (10) | −0.12073 (8) | 0.25825 (12) | 0.0487 (3) | |
O2 | 0.26936 (11) | −0.14243 (10) | 0.17994 (15) | 0.0678 (4) | |
S1 | 0.70823 (4) | −0.04188 (4) | 0.10432 (4) | 0.05415 (16) | |
S2 | 0.83629 (3) | 0.01316 (4) | 0.39184 (4) | 0.04712 (15) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0408 (9) | 0.0547 (11) | 0.0542 (11) | 0.0003 (8) | 0.0230 (8) | 0.0050 (8) |
C2 | 0.0557 (10) | 0.0621 (11) | 0.0483 (10) | 0.0097 (9) | 0.0299 (8) | 0.0015 (9) |
C3 | 0.0617 (10) | 0.0354 (8) | 0.0463 (9) | −0.0014 (8) | 0.0205 (8) | −0.0012 (8) |
C4 | 0.0462 (9) | 0.0384 (9) | 0.0531 (10) | −0.0057 (7) | 0.0128 (8) | −0.0025 (8) |
C5 | 0.0377 (8) | 0.0368 (8) | 0.0319 (7) | 0.0036 (6) | 0.0140 (6) | 0.0059 (6) |
C6 | 0.0372 (8) | 0.0417 (9) | 0.0399 (8) | −0.0011 (7) | 0.0177 (7) | −0.0014 (7) |
C7 | 0.0335 (8) | 0.0478 (9) | 0.0336 (8) | 0.0014 (7) | 0.0128 (6) | 0.0087 (7) |
C8 | 0.0336 (7) | 0.0456 (9) | 0.0331 (7) | −0.0021 (7) | 0.0150 (6) | 0.0033 (7) |
C9 | 0.0534 (11) | 0.0806 (14) | 0.0620 (12) | −0.0236 (10) | 0.0249 (9) | −0.0013 (11) |
C10 | 0.0649 (13) | 0.1042 (17) | 0.0659 (13) | −0.0218 (12) | 0.0414 (11) | −0.0039 (12) |
C11 | 0.0521 (10) | 0.0646 (12) | 0.0598 (11) | 0.0118 (9) | 0.0273 (9) | 0.0205 (10) |
C12 | 0.0761 (14) | 0.0835 (16) | 0.0628 (13) | 0.0131 (12) | 0.0162 (11) | 0.0208 (12) |
C13 | 0.0573 (12) | 0.0760 (16) | 0.122 (2) | 0.0094 (11) | 0.0252 (13) | 0.0350 (15) |
N1 | 0.0340 (6) | 0.0366 (7) | 0.0393 (7) | −0.0021 (5) | 0.0143 (5) | −0.0013 (6) |
N2 | 0.0453 (7) | 0.0432 (8) | 0.0427 (8) | 0.0025 (6) | 0.0194 (6) | −0.0047 (6) |
N3 | 0.0445 (7) | 0.0536 (9) | 0.0483 (8) | 0.0105 (6) | 0.0246 (6) | 0.0094 (7) |
N4 | 0.0429 (7) | 0.0457 (8) | 0.0447 (8) | −0.0073 (6) | 0.0203 (6) | −0.0049 (6) |
O1 | 0.0441 (6) | 0.0443 (6) | 0.0623 (8) | −0.0003 (5) | 0.0273 (5) | −0.0079 (6) |
O2 | 0.0505 (7) | 0.0591 (8) | 0.0897 (10) | −0.0204 (6) | 0.0263 (7) | −0.0248 (7) |
S1 | 0.0480 (3) | 0.0784 (4) | 0.0390 (2) | −0.0091 (2) | 0.02147 (19) | −0.0101 (2) |
S2 | 0.0341 (2) | 0.0642 (3) | 0.0365 (2) | 0.00106 (18) | 0.00896 (16) | 0.00165 (19) |
C1—H1A | 0.9700 | C8—H8 | 0.9800 |
C1—H1B | 0.9700 | C8—S1 | 1.8268 (15) |
C1—C6 | 1.516 (2) | C8—S2 | 1.7976 (15) |
C1—N3 | 1.460 (2) | C9—H9A | 0.9700 |
C2—H2A | 0.9700 | C9—H9B | 0.9700 |
C2—H2B | 0.9700 | C9—C10 | 1.499 (3) |
C2—N2 | 1.465 (2) | C9—S2 | 1.791 (2) |
C2—N3 | 1.440 (2) | C10—H10B | 0.9700 |
C3—H3B | 0.9700 | C10—H10A | 0.9700 |
C3—H3A | 0.9700 | C10—S1 | 1.8078 (19) |
C3—C4 | 1.512 (2) | C11—H11A | 0.9700 |
C3—N2 | 1.458 (2) | C11—H11B | 0.9700 |
C4—H4A | 0.9700 | C11—C12 | 1.509 (3) |
C4—H4B | 0.9700 | C11—N3 | 1.473 (2) |
C4—N1 | 1.483 (2) | C12—H12B | 0.9700 |
C5—C6 | 1.413 (2) | C12—H12A | 0.9700 |
C5—N1 | 1.3617 (18) | C12—C13 | 1.486 (3) |
C5—N2 | 1.3269 (19) | C13—H13B | 0.9600 |
C6—N4 | 1.359 (2) | C13—H13C | 0.9600 |
C7—H7B | 0.9700 | C13—H13A | 0.9600 |
C7—H7A | 0.9700 | N4—O1 | 1.2550 (16) |
C7—C8 | 1.529 (2) | N4—O2 | 1.2674 (16) |
C7—N1 | 1.4576 (19) | ||
C1—N3—C11 | 112.44 (14) | C12—C13—H13A | 109.5 |
H1A—C1—H1B | 107.8 | H12B—C12—H12A | 107.8 |
C2—N3—C1 | 108.50 (13) | C13—C12—C11 | 112.7 (2) |
C2—N3—C11 | 112.60 (14) | C13—C12—H12B | 109.0 |
H2A—C2—H2B | 108.0 | C13—C12—H12A | 109.0 |
C3—C4—H4A | 110.8 | H13B—C13—H13C | 109.5 |
C3—C4—H4B | 110.8 | H13B—C13—H13A | 109.5 |
C3—N2—C2 | 124.84 (14) | H13C—C13—H13A | 109.5 |
H3B—C3—H3A | 109.3 | N1—C4—C3 | 104.87 (12) |
C4—C3—H3B | 111.4 | N1—C4—H4A | 110.8 |
C4—C3—H3A | 111.4 | N1—C4—H4B | 110.8 |
H4A—C4—H4B | 108.8 | N1—C5—C6 | 130.82 (14) |
C5—C6—C1 | 119.04 (14) | N1—C7—H7B | 108.7 |
C5—N1—C4 | 108.19 (12) | N1—C7—H7A | 108.7 |
C5—N1—C7 | 122.63 (12) | N1—C7—C8 | 114.33 (12) |
C5—N2—C2 | 121.37 (13) | N2—C2—H2A | 109.3 |
C5—N2—C3 | 112.42 (13) | N2—C2—H2B | 109.3 |
C6—C1—H1A | 109.0 | N2—C3—H3B | 111.4 |
C6—C1—H1B | 109.0 | N2—C3—H3A | 111.4 |
C7—C8—H8 | 108.3 | N2—C3—C4 | 101.72 (13) |
C7—C8—S1 | 108.97 (10) | N2—C5—C6 | 118.30 (13) |
C7—C8—S2 | 114.96 (11) | N2—C5—N1 | 110.84 (13) |
C7—N1—C4 | 119.23 (13) | N3—C1—H1A | 109.0 |
H7B—C7—H7A | 107.6 | N3—C1—H1B | 109.0 |
C8—C7—H7B | 108.7 | N3—C1—C6 | 112.87 (13) |
C8—C7—H7A | 108.7 | N3—C2—H2A | 109.3 |
C9—C10—H10B | 109.6 | N3—C2—H2B | 109.3 |
C9—C10—H10A | 109.6 | N3—C2—N2 | 111.46 (13) |
C9—C10—S1 | 110.31 (13) | N3—C11—H11A | 109.0 |
C9—S2—C8 | 94.61 (8) | N3—C11—H11B | 109.0 |
H9A—C9—H9B | 108.4 | N3—C11—C12 | 112.74 (16) |
C10—C9—H9A | 110.1 | N4—C6—C1 | 117.12 (13) |
C10—C9—H9B | 110.1 | N4—C6—C5 | 123.19 (13) |
C10—C9—S2 | 108.21 (15) | O1—N4—C6 | 122.64 (13) |
C10—S1—C8 | 97.79 (9) | O1—N4—O2 | 120.23 (13) |
H10B—C10—H10A | 108.1 | O2—N4—C6 | 117.06 (13) |
C11—C12—H12B | 109.0 | S1—C8—H8 | 108.3 |
C11—C12—H12A | 109.0 | S1—C10—H10B | 109.6 |
H11A—C11—H11B | 107.8 | S1—C10—H10A | 109.6 |
C12—C11—H11A | 109.0 | S2—C8—H8 | 108.3 |
C12—C11—H11B | 109.0 | S2—C8—S1 | 107.87 (8) |
C12—C13—H13B | 109.5 | S2—C9—H9A | 110.1 |
C12—C13—H13C | 109.5 | S2—C9—H9B | 110.1 |
C1—C6—N4—O1 | −172.73 (14) | N1—C5—C6—C1 | −163.47 (15) |
C1—C6—N4—O2 | 4.3 (2) | N1—C5—C6—N4 | 26.1 (3) |
C3—C4—N1—C5 | −10.33 (17) | N1—C5—N2—C2 | 174.29 (13) |
C3—C4—N1—C7 | 136.21 (14) | N1—C5—N2—C3 | 7.03 (18) |
C4—C3—N2—C2 | −179.65 (14) | N1—C7—C8—S1 | 179.15 (10) |
C4—C3—N2—C5 | −12.91 (17) | N1—C7—C8—S2 | −59.67 (16) |
C5—C6—N4—O1 | −2.1 (2) | N2—C2—N3—C1 | 59.98 (18) |
C5—C6—N4—O2 | 174.92 (14) | N2—C2—N3—C11 | −65.14 (19) |
C6—C1—N3—C2 | −49.56 (18) | N2—C3—C4—N1 | 13.31 (16) |
C6—C1—N3—C11 | 75.65 (17) | N2—C5—C6—C1 | 14.4 (2) |
C6—C5—N1—C4 | −179.54 (15) | N2—C5—C6—N4 | −156.09 (15) |
C6—C5—N1—C7 | 35.3 (2) | N2—C5—N1—C4 | 2.50 (17) |
C6—C5—N2—C2 | −4.0 (2) | N2—C5—N1—C7 | −142.66 (14) |
C6—C5—N2—C3 | −171.22 (13) | N3—C1—C6—C5 | 13.5 (2) |
C7—C8—S1—C10 | 109.21 (13) | N3—C1—C6—N4 | −175.50 (14) |
C7—C8—S2—C9 | −86.58 (13) | N3—C2—N2—C3 | 131.22 (16) |
C8—C7—N1—C4 | 91.93 (16) | N3—C2—N2—C5 | −34.4 (2) |
C8—C7—N1—C5 | −126.53 (15) | N3—C11—C12—C13 | 69.8 (2) |
C9—C10—S1—C8 | −14.29 (18) | S1—C8—S2—C9 | 35.20 (11) |
C10—C9—S2—C8 | −46.45 (16) | S2—C8—S1—C10 | −16.21 (11) |
C12—C11—N3—C1 | 82.0 (2) | S2—C9—C10—S1 | 40.3 (2) |
C12—C11—N3—C2 | −155.08 (17) |
D—H···A | D—H | H···A | D···A | D—H···A |
C3—H3A···O1i | 0.97 | 2.48 | 3.322 (2) | 145 |
C3—H3B···O1ii | 0.97 | 2.56 | 3.269 (2) | 130 |
C4—H4A···O2i | 0.97 | 2.52 | 3.449 (2) | 160 |
Symmetry codes: (i) −x+1, y+1/2, −z+1/2; (ii) −x+1, −y, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C13H22N4O2S2 |
Mr | 330.47 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 293 |
a, b, c (Å) | 11.9680 (3), 13.6304 (3), 10.8866 (3) |
β (°) | 115.465 (3) |
V (Å3) | 1603.38 (8) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.34 |
Crystal size (mm) | 0.45 × 0.41 × 0.26 |
Data collection | |
Diffractometer | Bruker APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.917, 1.0 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 13404, 3256, 2486 |
Rint | 0.024 |
(sin θ/λ)max (Å−1) | 0.625 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.033, 0.096, 1.04 |
No. of reflections | 3256 |
No. of parameters | 191 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.22, −0.16 |
Computer programs: APEX2 (Bruker, 2005), SAINT (Bruker, 2005), SIR97 (Altomare et al., 1999), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008), WinGX (Farrugia, 1999).
D—H···A | D—H | H···A | D···A | D—H···A |
C3—H3A···O1i | 0.97 | 2.48 | 3.322 (2) | 145 |
C3—H3B···O1ii | 0.97 | 2.56 | 3.269 (2) | 130 |
C4—H4A···O2i | 0.97 | 2.52 | 3.449 (2) | 160 |
Symmetry codes: (i) −x+1, y+1/2, −z+1/2; (ii) −x+1, −y, −z+1. |
Acknowledgements
The authors thank the National Natural Science Foundation of China (grant 20902037) and the Doctoral Foundation of University of Jinan (B0542) for financial support.
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Neonicotinoid inseticides have become an important chemical class of insecticides (Ohno et al., 2009 and Jeschke et al., 2008). We have synthesized a series of new compounds by introducing sulfur atoms into the lead struture to improve the lipid solubility of neonicotinoids insecticides. in which the title compound exhibited moderate insecticidal activities against pea aphids.
The structure of the title compound is shown in Fig. 1 with the atom-numbering scheme. The title compound is homolog of 1-[(1,3-Dithiolan-2-yl)methyl]-6-methyl- 8-nitro-1,2,3,5,6,7-hexahydroimidazo- [1,2-c]pyrimidine (Tian et al., 2010). The six-membered ring displays an half-chair conformation. The olefin-amine moity is close to being coplanar with imidazolidine ring. The dithiolane is in a twisted conformation [C9—C10—S1 = 110.31 (13)° and C9—S2—C8 = 94.61 (8)°]. The packing of the molecules is mainly stabilized by C—H···O interactions (Table 1).