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N-(2,3-Dimethyl-phen-yl)acetamide.

ABSTRACT: The conformation of the N-H bond in the structure of the title compound, C(10)H(13)NO, is syn to both the 2- and 3-methyl substituents on the aromatic ring, and is anti to the C=O bond. N-H?O hydrogen bonds link the mol-ecules into supra-molecular chains.

SUBMITTER: Gowda BT

PROVIDER: S-EPMC2977664 | biostudies-literature | 2009 Apr

REPOSITORIES: biostudies-literature

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N-(2,3-Dimethyl-phen-yl)acetamide.

Gowda B Thimme BT Foro Sabine S Terao Hiromitsu H Fuess Hartmut H

Acta crystallographica. Section E, Structure reports online 20090408 Pt 5

The conformation of the N-H bond in the structure of the title compound, C(10)H(13)NO, is syn to both the 2- and 3-methyl substituents on the aromatic ring, and is anti to the C=O bond. N-H⋯O hydrogen bonds link the mol-ecules into supra-molecular chains. ...[more]

PMID: 21584007

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N-(2,3-Dimethyl-phen-yl)-2,2,2-trimethyl-acetamide.

Project description:The N-H bond in the title compound, C(13)H(19)NO, is anti to the C=O bond and is also anti to both the 2- and 3-methyl substituents in the aromatic ring. In the crystal, inter-molecular N-H?O hydrogen bonds link the mol-ecules into chains propagating along the c axis.

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2,2-Dichloro-N-(2,3-dimethyl-phen-yl)acetamide.

Project description:The conformation of the N-H bond in the title compound, C(10)H(11)Cl(2)NO, is syn to both the 2- and 3-methyl substituents in the aromatic ring, similar to that of the 2-chloro and 3-chloro substituents in 2,2-dichloro-N-(2,3-dichloro-phen-yl)acetamide and the 2-methyl substituent in 2,2-dichloro-N-(2-methyl-phen-yl)acetamide, but in contrast to the anti conformation observed with respect to the 3-methyl substituent in 2,2-dichloro-N-(3-methyl-phen-yl)acetamide. The bond parameters in the title compound are similar to those in 2,2-dichloro-N-phenyl-acetamide and other acetanilides. The mol-ecules of the title compound are linked into chains through N-H⋯O and C-H⋯O hydrogen bonding.

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N-(3,4-Dimethyl-phen-yl)acetamide.

Project description:The conformation of the N-H bond in the title compound (34DMPA), C(10)H(13)NO, is syn to the 3-methyl substituent in the aromatic ring, in contrast to the anti conformation observed with respect to the 3-chloro substituent in N-(3,4-dichloro-phen-yl)acetamide (34DCPA). The asymmetric unit of the structure contains three mol-ecules. The bond parameters in 34DMPA are similar to those in 34DCPA, N-(2,6-dimethyl-phen-yl)acetamide, N-(3,5-dimethyl-phen-yl)acetamide and other acetanilides. The mol-ecules in 34DMPA are linked into infinite chains through N-H⋯O hydrogen bonding.

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N-{4-[(3,4-Dimethyl-phen-yl)sulfamo-yl]phen-yl}acetamide.

Project description:Two independent mol-ecules comprise the asymmetric unit of the title compound, C(16)H(18)N(2)O(3)S. Small but significant twists about the (S)N-C and S-C bonds differentiate the mol-ecules but the most obvious difference is found in the relative orientation of the meta-methyl groups, which lie on opposite sides of the mol-ecules. Overall, both mol-ecules adopt a U shape but with significant twisting evident, particularly in the second independent mol-ecule [dihedral angles between benzene rings = 63.90?(13) and 35.78?(11)°]. In the crystal, N-H?O hydrogen bonds lead to supra-molecular chains with a tubular topology propagating in [100] and C-H?O contacts cross-link the chains.

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2-(4-Bromo-phen-yl)-N-(2,6-dimethyl-phen-yl)acetamide.

Project description:In the title compound, C(16)H(16)BrNO, the dihedral angle between the benzene rings is 69.8 (2)°. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into C(4) chains propagating in [100]. Adjacent mol-ecules in the chains are also linked by C-H⋯O inter-actions which, along with the N-H⋯O hydrogen bonds, generate R(2) (1)(6) loops.

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N-(2,3-Dimethyl-phen-yl)succinimide.

Project description:In the title compound, C(12)H(13)NO(2), the dihedral angle between the aromatic benzene ring and the imide segment is 67.7?(1)°. The mol-ecules in the crystal are packed into layered chains along the c axis.

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N-(2,3-Dimethyl-phen-yl)benzamide.

Project description:The conformation of the N-H bond in the structure of the title compound, C(15)H(15)NO, is anti to the ortho and meta-methyl substituents in the aniline benzene ring, in contrast to the syn conformation observed with respect to the ortho and meta-chloro substituents in N-(2,3-dichloro-phen-yl)benzamide. Furthermore, the conformations of N-H and C=O bonds in the amide group are anti to each other, similar to those observed in other benzanilides. The dihedral angle between the benzoyl and aniline rings is 84.1 (2)°. The amide group is twisted by 23.0 (3)° out of the plane of the benzoyl ring. The structure exhibits positional disorder over the aniline ring, with site occupancies of 0.80 (1) and 0.20 (1) for the major and minor components, respectively. In the crystal, mol-ecules are connected through N-H⋯O hydrogen bonds into chains running along the b axis. An intra-molecular C-H⋯O close contact occurs.

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2,2-Dichloro-N-(3,4-dimethyl-phen-yl)acetamide.

Project description:In the title compound, C(10)H(11)Cl(2)NO, the N-H bond is syn to the 3-methyl substituent in the aromatic ring, similar to that observed in N-(3,4-dimethyl-phen-yl)acetamide and to the 3-chloro substituent in 2,2-dichloro-N-(3,4-dichloro-phen-yl)acetamide, and contrasting with the anti conformation observed for the 3-methyl substituent in 2,2,2-trichloro-N-(3,4-dimethyl-phen-yl)acetamide. On the other hand, it is anti to the C=O bond. An inter-molecular N-H?O hydrogen bond links mol-ecules into infinite chains along the b axis.

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2-Chloro-N-(2,4-dimethyl-phen-yl)acetamide.

Project description:The conformation of the N-H bond in the structure of the title compound, C(10)H(12)ClNO, is syn to the ortho methyl group, similar to that observed with respect to the meta methyl group in 2-chloro-N-(3-methyl-phen-yl)acetamide and the ortho-chloro group in 2-chloro-N-(2-chloro-phen-yl)acetamide. The geometric parameters are similar to those of other acetanilides. The mol-ecules are linked into chains through inter-molecular N-H?O hydrogen bonds.

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