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Updated: Aug 10, 2026

Microwave-assisted Intramolecular Dehydrogenative Diels-Alder Reactions for the Synthesis of Functionalized Naphthalenes/Solvatochromic Dyes
Published on: April 1, 2013
(3R,4aS,5R)-3-Hydroxy-5-isopropenyl-3,8-dimethyl-4,4a,5,6-tetrahydro-2(3H)-naphthalenone
1Bijvoet Centre for Biomolecular Research, Department of Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands. d.d.ellis@chem.uu.nl
This study details the crystal structure of a C(15)H(20)O(2) compound, revealing intermolecular hydrogen bonds that form molecular chains. The molecule exhibits distinct conformations in its decalin unit and a flat conjugated enone system.
Area of Science:
- Organic Chemistry
- Crystallography
- Molecular Structure
Background:
- Understanding the three-dimensional arrangement of atoms in organic molecules is crucial for predicting their properties and reactivity.
- Carvone derivatives are common natural products with diverse biological activities.
Purpose of the Study:
- To elucidate the crystal structure of a specific C(15)H(20)O(2) compound.
- To analyze the intermolecular interactions and conformational preferences within the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular structure.
- Analysis of hydrogen bonding and conformational analysis of the decalin unit.
Main Results:
- The crystal structure reveals intermolecular hydrogen bonds between hydroxyl and keto groups, forming [100] chains.
- The decalin unit displays envelope conformations.
- A planar conjugated enone system is observed, with the remainder of the molecule folded.
Conclusions:
- The crystal packing is dominated by hydrogen bonding, influencing the overall molecular arrangement.
- The molecule exhibits a combination of planar and folded conformations.
- The stereochemistry is consistent with the R-(-)-carvone precursor.
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