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Updated: May 14, 2026
11:51
Facile Preparation of 4-Substituted Quinazoline Derivatives
Published on: February 15, 2016
Substituted 4-alkoxy-7-Cl-quinolines exhibiting π-π stacking
Ligia R Gomes1, John Nicolson Low, James L Wardell
1REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 687, P-4169-007 Porto, Portugal.
Acta Crystallographica. Section C, Crystal Structure Communications
|February 5, 2013
Summary
This study reports the first crystal structures of 4-alkoxyquinolines. All three molecules analyzed exhibit planar structures and form π-π interactions between quinoline rings.
Area of Science:
- Crystallography
- Organic Chemistry
- Materials Science
Background:
- 4-alkoxyquinolines are a class of organic compounds with potential applications.
- Understanding their solid-state structures is crucial for predicting their properties and designing new materials.
- Previous crystallographic data for this specific subclass of quinolines was limited.
Purpose of the Study:
- To determine and analyze the crystal structures of three distinct 4-alkoxyquinoline derivatives.
- To investigate the intermolecular interactions, specifically π-π stacking, within these crystalline structures.
- To establish a foundational understanding of the solid-state behavior of 4-alkoxyquinolines.
Main Methods:
- Single-crystal X-ray diffraction was employed to elucidate the molecular structures.
- Crystallographic data was collected and analyzed to determine atomic positions and unit cell parameters.
- Analysis of packing arrangements and intermolecular distances was performed to identify key interactions.
Main Results:
- The crystal structures of 4-allyloxy-7-chloroquinoline, 7-chloro-4-methoxyquinoline, and 7-chloro-4-ethoxyquinoline were successfully determined.
- All three molecules were found to be planar.
- π-π interactions between the quinoline ring systems were observed in all structures, facilitated by unit-cell translations along the a axes, regardless of the space group.
Conclusions:
- This work provides the first reported crystal structures for 4-alkoxyquinolines.
- The observed planarity and π-π stacking interactions are significant features of these molecular arrangements.
- These findings offer valuable insights into the solid-state chemistry of 4-alkoxyquinolines, relevant for further research and development.
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