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Updated: Jun 1, 2026
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Microwave-assisted Intramolecular Dehydrogenative Diels-Alder Reactions for the Synthesis of Functionalized Naphthalenes/Solvatochromic Dyes
Published on: April 1, 2013
N-(4-Chloro-phenyl)-1,8-naphthalimide.
1College of Food Science and Light Industry, Nanjing University of Technology, Xinmofan Road No.5 Nanjing, Nanjing 210009, People's Republic of China.
Summary
This study details the crystal structure of a chlorinated naphthalimide derivative. Analysis reveals a nearly planar naphthalimide core with a significantly tilted 4-chlorophenyl substituent, held together by intermolecular interactions.
Area of Science:
- Organic Chemistry
- Crystallography
- Supramolecular Chemistry
Background:
- Naphthalimide derivatives are important scaffolds in medicinal chemistry and materials science.
- Understanding the solid-state structure is crucial for predicting and tuning molecular properties.
Purpose of the Study:
- To elucidate the crystal structure of a specific chlorinated naphthalimide compound.
- To investigate the intermolecular interactions governing its solid-state packing.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
- Analysis of bond lengths, bond angles, and dihedral angles provided insights into molecular geometry.
- Intermolecular interactions, including hydrogen bonds and π-π stacking, were identified and analyzed.
Main Results:
- The naphthalimide ring system exhibits near planarity with small dihedral angles between its constituent rings.
- The 4-chlorophenyl substituent is significantly twisted relative to the naphthalimide plane, with a dihedral angle of 75.77°.
- Crystal packing is influenced by C-H⋯O interactions and weak π-π contacts between naphthalimide rings (centroid-centroid distance of 3.732 Å).
Conclusions:
- The determined crystal structure provides a detailed understanding of the spatial arrangement and intermolecular forces in this chlorinated naphthalimide.
- The observed molecular conformation and packing motifs are important for designing related compounds with specific electronic or photophysical properties.
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