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Ethyl 2-acetyl-hydrazono-2-phenyl-acetate.

ABSTRACT: The title compound, C(12)H(14)N(2)O(3), was synthesized as an inter-mediate for the synthesis of metamitron. The benzene ring forms dihedral angles of 86.3 (2) and 10.0 (3)° with the ethyl group and the acetyl-imino plane, respectively. The crystal structure involves inter-molecular C-H⋯O and N-H⋯O hydrogen bonds.

SUBMITTER: Xu LZ

PROVIDER: S-EPMC2914993 | biostudies-literature |

REPOSITORIES: biostudies-literature

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2-Acetyl-hydrazono-2-phenyl-aceto-hydrazide.

Project description:The title compound, C(10)H(12)N(4)O(2), was prepared as an inter-mediate for the synthesis of metamitron. The benzene ring plane forms dihedral angles of 66.0?(1) and 3.5?(5)° with the hydrazine plane and the acetyl-imino plane, respectively. The crystal structure involves inter-molecular N-H?O hydrogen bonds.

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Project description:In the title compound, C15H19NO4, all three carbonyl groups are syn-oriented with respect to the methine group attached to the phenyl ring. The mean planes of the phenyl ring and ethyl carbamate moiety form a dihedral angle of 65.2?(1)°. In the crystal, mol-ecules related by translation in [100] are linked into chains via N-H?O hydrogen bonds.

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Project description:The title compound, C(10)H(11)ClN(2)O(2), features an almost planar C(ar)-N(H)-N=C(Cl) unit [torsion angle = 0.8 (1)° whose phenyl substituent is almost coplanar with it [dihedral angle = 2.8 (2)°]; this unit is slightly twisted with respect to the carboxyl -CO(2) fragment [dihedral angle = 10.3 (2)°]. In the crystal, the amino group acts as a hydrogen-bond donor to the carbonyl O atom of an adjacent mol-ecule; the hydrogen bond generates a helical chain that runs along the b axis of the monoclinic unit cell.

| S-EPMC3007979 | biostudies-literature

Ethyl 2-(3-acetyl-6-methyl-2-oxo-2H-pyran-4-yl-oxy)acetate.

Project description:The title compound, C(12)H(14)O(6), features a roughly planar mol-ecule (r.m.s. deviation for all non-H atoms = 0.287?Å). In the crystal, the mol-ecules are held together by C-H?O hydrogen bonds.

| S-EPMC2979740 | biostudies-literature

Ethyl 2-[(3-chloro-phen-yl)hydrazono]-3-oxobutanoate.

Project description:The mol-ecule of the title oxobutanoate derivative, C(12)H(13)ClN(2)O(3), adopts a keto-hydrazo tautomeric form and is roughly planar, the angle between the benzene ring and the mean plane through the hydrazone and aliphatic chain being 1.49?(6)°. This planarity is further aided by the formation of an intra-molecular N-H?O hydrogen bond which generates an S(6) ring motif. The aromatic ring and aliphatic chain have a trans configuration with respect to the N-N bond. In the crystal packing, centrosymmetric R(2) (2)(16) dimers are formed through pairs of weak C-H?O(3-oxo) inter-actions. These dimers are linked together through weak C-H?O(carboxyl-ate C=O) inter-actions into ribbons along the b-axis direction. These ribbons are stacked along the a-axis direction. The crystal also exhibits Cl?Cl [3.4988?(6)?Å] and C?O [3.167?(2)-3.335?(2)?Å] short contacts.

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