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Ethyl 4-(2,4-difluoro-phen-yl)-6-methyl-2-oxo-1,2,3,4-tetra-hydro-pyrimidine-5-carboxyl-ate.

ABSTRACT: In the title compound, C(14)H(14)F(2)N(2)O(3), the dihydro-pyrimidin-one ring adopts a flattened boat conformation. The difluoro-phenyl group is disordered over two orientations with occupancies of 0.544?(3) and 0.456?(3). The methoxy-carbonyl group is disordered over two positions with occupancies of 0.580?(8) and 0.420?(8). In the crystal, mol-ecules are linked into centrosymmetric dimers by paired N-H?O hydrogen bonds and the dimers are linked into a ribbon-like structure along [100] by further N-H?O hydrogen bonds.

SUBMITTER: Fun HK

PROVIDER: S-EPMC2969791 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Ethyl 4-(2,4-difluoro-phen-yl)-6-methyl-1-phenyl-2-thioxo-1,2,3,4-tetra-hydro-pyrimidine-5-carboxyl-ate.

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Project description:In the title compound, C(14)H(15)BrN(2)O(3), the dihydro-pyrimidin-one ring adopts a boat conformation. In the crystal, adjacent mol-ecules are linked through N-H?O hydrogen bonds forming an R(2) (2)(8) ring motif and generating a zigzag chain extending in [010].

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Project description:In the title compound, C(16)H(14)F(6)N(2)O(3), the dihydro-pyrimid-in-one ring adopts an envelope conformation. In the crystal, mol-ecules are linked by N-H?O and C-H?O hydrogen bonds into a ribbon-like structure along the b axis. In the ribbon, a pair of bifurcated acceptor N-H?O and C-H?O bonds generate an R(2) (1)(6) ring motif. Adjacent ribbons are linked via C-H?F hydrogen bonds.

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Project description:In the mol-ecule of the title compound, C(18)H(22)N(2)O(3), the dihydro-pyrimidinone ring adopts an envelope conformation. The dihedral angle between the phenyl ring and the mean plane through the enamine fragment is 86.04?(7)°. The mol-ecular conformation is stabilized by an intra-molecular C-H?O hydrogen bond. In the crystal, inter-molecular N-H?O hydrogen bonds link pairs of mol-ecules into centrosymmetric dimers.

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Project description:In the title compound, C(18)H(19)N(3)O(3), the tetra-hydro-pyrimidone ring adopts a distorted boat conformation. In the crystal structure, inter-molecular N-H?O hydrogen bonds link the mol-ecules into centrosymmetric dimers, which are further linked via inter-molecular C-H?? inter-actions. In addition, an intra-molecular C-H?O hydrogen bond occurs.

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Ethyl 1-oxo-1,2,3,4-tetra-hydro-9H-carbazole-3-carboxyl-ate.

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