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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.

ABSTRACT: The title benzoxazine molecule, C18H18Br2N2O2, was prepared by a Mannich-type reaction of 4-bromo-phenol with ethane-1,2-di-amine 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 mol-ecules along the b-axis direction.

SUBMITTER: Rivera A 

PROVIDER: S-EPMC5095852 | biostudies-other | 2016 Nov

REPOSITORIES: biostudies-other

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

Rivera Augusto A   Rojas Jicli José' JJ   Ríos-Motta Jaime J   Bolte Michael M  

Acta crystallographica. Section E, Crystallographic communications 20161025 Pt 11

The title benzoxazine molecule, C<sub>18</sub>H<sub>18</sub>Br<sub>2</sub>N<sub>2</sub>O<sub>2</sub>, was prepared by a Mannich-type reaction of 4-bromo-phenol with ethane-1,2-di-amine and formaldehyde. The title compound crystallizes in the monoclinic space group <i>C</i>2/<i>c</i> with a centre of inversion located at the mid-point of the C-C bond of the central CH<sub>2</sub>CH<sub>2</sub> spacer. The oxazinic ring adopts a half-chair conformation. The structure is compared to those of other  ...[more]

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