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1-(2,2-Dimeth-oxy-eth-yl)-8-nitro-1,2,3,5,6,7-hexa-hydro-imidazo[1,2-a]pyridin-5-ol.

ABSTRACT: In the title compound, C(11)H(19)N(3)O(5), the six-membered ring displays a half-chair conformation and the imidazolidine ring is essentially planar (r.m.s. deviation = 0.088 Å). An inter-molecular hydrogen bond between the hy-droxy O atom and a nitro O atom stabilizes the crystal packing.

SUBMITTER: Tian Z

PROVIDER: S-EPMC3007961 | biostudies-literature |

REPOSITORIES: biostudies-literature

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1-[(6-Chloro-3-pyrid-yl)meth-yl]-5-eth-oxy-8-nitro-1,2,3,5,6,7-hexa-hydro-imidazo[1,2-a]pyridine.

Project description:In the title compound, C(15)H(19)ClN(4)O(3), an active agrochemical possessing insecticidal activity, the dihedral angle between the mean planes passing through the pyridine ring and the five-membered ring is 87.3?(2)°. The fused pyridine ring adopts a twisted sofa conformation. The mol-ecular structure features close intra-molecular C-H?N and C-H?O hydrogen bonding.

| S-EPMC2970492 | biostudies-literature

[5-(2-Fur-yl)-6-nitro-1,2,3,5,6,7-hexa-hydro-imidazo[1,2-a]pyridin-8-yl](phen-yl)methanone.

Project description:In the title compound, C(18)H(17)N(3)O(4), the furyl and phenyl rings are inclined at almost right angles [85.77?(7) and 63.25?(7)°, respectively] to the central imidazo[1,2-a]pyridinyl unit. The structure displays both inter- and intra-molecular N-H?O hydrogen bonding.

| S-EPMC2969857 | biostudies-other

1-[(1,3-Dithio-lan-2-yl)meth-yl]-8-nitro-6-propyl-1,2,3,5,6,7-hexa-hydro-imidazo[1,2-c]pyrimidine.

Project description:In the title compound, C(13)H(22)N(4)O(2)S(2), 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 dithiol-ane ring adopts a twisted conformation. In the crystal, mol-ecules are linked by weak C-H?O inter-actions.

| S-EPMC3008034 | biostudies-literature

1-[(1,3-Dithio-lan-2-yl)meth-yl]-6-methyl-8-nitro-1,2,3,5,6,7-hexa-hydro-imidazo[1,2-c]pyrimidine.

Project description:In the title compound, C(11)H(18)N(4)O(2)S(2), the dithiol-ane ring displays an envelope conformation, the tetra-hydro-pyrimidine ring has a conformation that is between half-chair and screw-boat, and the imidazole ring is essentially planar (r.m.s. deviation = 0.0017?Å). No significant directional inter-molecular inter-actions are present in the structure.

| S-EPMC3007836 | biostudies-other

1-[(6-Chloro-pyridin-3-yl)meth-yl]-10-nitro-1,2,3,5,6,7,8,9-octa-hydro-5,9-methano-imidazo[1,2-a]azocin-5-ol.

Project description:In the title compound, C16H19ClN4O3, the cyclo-hexane ring displays a chair formation and the tetra-hydro-pyridine ring displays an envelope conformation with the methyl-ene C atom as the flap; the imidazolidine ring also displays an envelope conformation with a methyl-ene C atom as the flap. In the crystal, O-H?N hydrogen bonds between hy-droxy groups and pyridine rings link inversion-related mol-ecules into dimers. Weak C-H?O hydrogen bonds further link the dimers into supra-molecular chains running along the c axis.

| S-EPMC3772455 | biostudies-literature

(E)-1-(2,2-Dimeth-oxy-eth-yl)-2-(nitro-methyl-idene)imidazolidine.

Project description:In the title compound, C(8)H(15)N(3)O(4), the 2-(nitro-methyl-ene)imidazolidine fragment is close to being planar (r.m.s. deviation = 0.027?Å), which may be correlated with delocalization of the electrons and the effect of the strongly electron-withdrawing NO(2) group. An intra-molecular N-H?O link generates an S(6) ring. The same H atom also forms a weak inter-molecular N-H?O hydrogen bond, which results in C(7) chains propagating in [010].

| S-EPMC3008036 | biostudies-literature

8-{(E)-[(4-Chloro-phen-yl)imino]-meth-yl}-1,1,7,7-tetra-methyl-1,2,3,5,6,7-hexa-hydro-pyrido[3,2,1-ij]quinolin-9-ol.

Project description:The title Schiff base, C23H27ClN2O adopts the phenol-imine tautomeric form, with an intra-molecular O-H?N hydrogen bond, which generates an S(6) ring motif. Three C atoms of the heterocyclic moiety of the hexa-hydro-pyrido-quinoline unit, as well as the two methyl groups bonded to one of these C atoms, are disordered over two set of sites, with anoccupancy ratio of 0.740?(4):0.260?(4).

| S-EPMC3685040 | biostudies-literature

2,2'-(1,3,5,7-Tetra-oxo-1,2,3,5,6,7-hexa-hydro-pyrrolo[3,4-f]isoindole-2,6-di-yl)diacetic acid N,N-dimethyl-formamide disolvate.

Project description:The asymmetric unit of the title compound, C(14)H(8)N(2)O(8)·2C(3)H(7)NO or L·2DMF (DMF = N,N-dimethyl-formamide), contains one half of the centrosymmetric mol-ecule L and one solvent mol-ecule, which is disordered between two orientations in a 0.555?(4):0.445?(4) ratio. Inter-molecular O-H?O hydrogen bonds link one L and two DMF mol-ecules into a centrosymmetric hydrogen-bonded cluster. The crystal packing is further stabilized by weak inter-molecular C-H?O hydrogen bonds.

| S-EPMC2970400 | biostudies-literature

Crystal structure and Hirshfeld surface analysis of 5,7-diphenyl-1,2,3,5,6,7-hexa-hydro-imidazo[1,2-<i>a</i>]pyridine-6,6,8-tricarbo-nitrile methanol mono-solvate.

Project description:In the title compound, C22H17N5·CH4O, the imidazolidine ring of the 1,2,3,5,6,7-hexa-hydro-imidazo[1,2-a]pyridine ring system is a twisted envelope, while the 1,2,3,4-tetra-hydro-pyridine ring adopts a twisted boat conformation. In the crystal, pairs of mol-ecules are linked by O-H⋯N and N-H⋯O hydrogen bonds via two methanol mol-ecules, forming a centrosymmetric R 4 4(16) ring motif. These motifs are connected to each other by C-H⋯N hydrogen bonds and form columns along the a axis. The columns form a stable mol-ecular packing, being connected to each other by van der Waals inter-actions. A Hirshfeld surface analysis indicates that the most significant contributions to the crystal packing are from H⋯H (43.8%), N⋯H/H⋯N (31.7%) and C⋯H/H⋯C (18.4%) contacts.

| S-EPMC8183442 | biostudies-literature

(R)-(+)-Dimeth-yl[4-oxido-2-oxo-1-(1-phenyl-eth-yl)-1,2,5,6-tetra-hydro-pyridin-3-yl]sulfonium.

Project description:In the title zwitterionic compound, C(15)H(19)NO(2)S, the six-membered heterocycle adopts a sofa conformation. The negative charge is delocalized along the carbonyl and enolate system on the ring and the positive charge is localized on the S atom. Two inter-molecular C-H?O inter-actions help to establish the packing.

| S-EPMC3051604 | biostudies-literature

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