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2-(2,4,5-Trimeth-oxy-phen-yl)-2,3-dihydro-quinolin-4(1H)-one.

ABSTRACT: In the title aza-flavanone, C(18)H(19)NO(4), an intra-molecular cyclization product of chalcone, the central heterocyclic ring is in an envelope conformation and the dihedral angle between the benzene rings is 51.03?(10)°. The meth-oxy groups at the ortho and para positions are slightly twisted from the benzene ring to which they are bound [C-O-C-C = 21.9?(3) and -171.93?(18)°, respectively], whereas the meth-oxy group at the meta position is almost coplanar [C-O-C-C = 3.5?(3)°]. In the crystal, mol-ecules are linked by N-H?O hydrogen bonds and weak C-H?O inter-actions into chains along the [001] direction. Weak C-H?? inter-actions also occur.

SUBMITTER: Chantrapromma S

PROVIDER: S-EPMC3295454 | biostudies-literature | 2012 Mar

REPOSITORIES: biostudies-literature

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2-(2,4,5-Trimeth-oxy-phen-yl)-2,3-dihydro-quinolin-4(1H)-one.

Chantrapromma Suchada S Ruanwas Pumsak P Boonnak Nawong N Chantrapromma Kan K Fun Hoong-Kun HK

Acta crystallographica. Section E, Structure reports online 20120210 Pt 3

In the title aza-flavanone, C(18)H(19)NO(4), an intra-molecular cyclization product of chalcone, the central heterocyclic ring is in an envelope conformation and the dihedral angle between the benzene rings is 51.03 (10)°. The meth-oxy groups at the ortho and para positions are slightly twisted from the benzene ring to which they are bound [C-O-C-C = 21.9 (3) and -171.93 (18)°, respectively], whereas the meth-oxy group at the meta position is almost coplanar [C-O-C-C = 3.5 (3)°]. In the crystal, ...[more]

PMID: 22412565

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