نتایج جستجو برای: imidazolidine 2
تعداد نتایج: 2525346 فیلتر نتایج به سال:
In the title nitronyl nitroxide radical compound, C(16)C(23)N(2)O(5), the imidazole and benzene rings are twisted with respect to each other, making a dihedral angle of 26.2 (4)°. The imidazole ring adopts a half-chair conformation. Weak C-H⋯π inter-actions are also found.
The title compound, C(14)H(11)N(3)O(3), adopts an E or trans configuration with respect to the C=N bond. In the mol-ecule there is an intra-molecular O-H⋯N hydrogen bond involving the hy-droxy substituent at the 2-positon of the naphthalene ring and the adjacent methyl-ene-amino N atom. The mol-ecule is roughly planar, the dihedral angle between the naphthalene and imidazolidine-2,4-dione mean ...
In the title compound, C13H14N2O2, the C5 ring has an envelope conformation with the C atom adjacent to the quaternary C being the flap. The five atoms comprising the imidazolidine-2,4-dione ring are almost planar (r.m.s. deviation = 0.004 Å). The dihedral angle between the five-membered rings is 89.66 (10)°. In the crystal, inversion-related mol-ecules are connected via {⋯HNCO}2 synthons. Thes...
In the title compound, C(20)H(14)N(4)O(2), mol-ecules are linked into chains by N-H⋯O hydrogen bonds, but the cyano group does not participate in the supra-molecular aggregation. The crystal structure of the compound indicates the presence of a double bond with Z geometry, connecting the imidazolidine and indole units. The dihedral angle between the imidazole and benzene ring planes is 62.45 (4)°.
Imidazolidine derivatives, or hydantoins, are synthetic compounds with different therapeutic applications. Many imidazolidine derivatives have psychopharmacological properties, such as phenytoin, famous for its anticonvulsant efficacy, but also effective in the treatment of neuropathic pain. The hydantoin, 3-phenyl-5-(4-ethylphenyl)-imidazolidine-2,4-dione (IM-3), synthesized from the amino aci...
Abstract Bicyclic lactams can be prepared from diethyl aminomalonate and substituted benzaldehydes by formation of a dimerised imidazolidine cycloadduct followed Dieckmann ring closure. The resulting N,N-heterocycles are metal-chelating but show no antibacterial activity.
In the title compound, C(25)H(32)Cl(2)N(2)O(2), there are two intra-molecular O-H⋯ N hydrogen-bonding inter-actions between the hy-droxy groups on the aromatic rings and the two N atoms of the heterocyclic group. The cyclo-hexane ring adopts a chair conformation and the imidazolidine unit to which it is fused has a twisted envelope conformation. The asymmetric unit comprises one half-mol-ecule ...
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