Crystal structures of (E)-3-(furan-2-yl)-2-phenyl-N-tosyl-acryl-amide and (E)-3-phenyl-2-(m-tol-yl)-N-tosyl-acryl-amide.

ABSTRACT: In the title N-tosyl-acryl-amide compounds, C20H17NO4S, (I), and C23H21NO3S, (II), the conformation about the C=C bond is E. The acryl-amide groups, [-NH-C(=O)-C=C-], are almost planar, with the N-C-C=C torsion angle being -170.18?(14)° in (I) and -168.01?(17)° in (II). In (I), the furan, phenyl and 4-methyl-benzene rings are inclined to the acryl-amide mean plane by 26.47?(11), 69.01?(8) and 82.49?(9)°, respectively. In (II), the phenyl, 3-methyl-benzene and 4-methyl-benzene rings are inclined to the acryl-amide mean plane by 11.61?(10), 78.44?(10) and 78.24?(10)°, respectively. There is an intra-molecular C-H?? inter-action present in compound (II). In the crystals of both compounds, mol-ecules are linked by pairs of N-H?O hydrogen bonds, forming inversion dimers with an R 2 (2)(8) ring motif. In (I), the dimers are reinforced by C-H?O hydrogen bonds and linked by C-H?? inter-actions, forming chains along [011]. In the crystal of (II), the dimers are linked via C-H?O hydrogen bonds, forming chains along [100]. The chains are further linked by C-H?? inter-actions, forming layers parallel to (010).

SUBMITTER: Cheng D 

PROVIDER: S-EPMC4908551 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature