Crystal structure of 1,2-bis(6-bromo-3,4-dihydro-2H-benz[e][1,3]oxazin-3-yl)ethane: a bromine-containing bis-benzoxazine

Acta Crystallographica Section E: Crystallographic Communications

Michael Bolte¹  Jaime Ríos-Motta²  Augusto Rivera²  Jicli José' Rojas² 

[1] Institut für Anorganische Chemie, J. W. Goethe-Universität Frankfurt, Max-von Laue-Str., 7, 60438 Frankfurt/Main, Germany;Universidad Nacional de Colombia, Sede Bogotá, Facultad de Ciencias, Departamento de Química, Cra 30 No. 45-03, Bogotá, Código Postal 110911, Colombia;

关键词: crystal structure;    benzoxazines;    phenolic resins;    C—H...Br and C—H...O hydrogen bonds;   

DOI  :  10.1107/S2056989016016509

来源: DOAJ

【 摘 要 】

The title benzoxazine molecule, C18H18Br2N2O2, was prepared by a Mannich-type reaction of 4-bromophenol with ethane-1,2-diamine and formaldehyde. The title compound crystallizes in the monoclinic space group C2/c with a centre of inversion located at the mid-point of the C—C bond of the central CH2CH2 spacer. The oxazinic ring adopts a half-chair conformation. The structure is compared to those of other functionalized benzoxazines synthesized in our laboratory. In the crystal, weak C—H...Br and C—H...O hydrogen bonds stack the molecules along the b-axis direction.

【 授权许可】

Unknown