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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
2-[Anilino(phen-yl)meth-yl]cyclo-heptan-one
Bagher Eftekhari-Sis1, Sahar Mohajer, Maryam Zirak
1Department of Chemistry, University of Maragheh, Maragheh, Iran.
This study details the crystal structure of a C20H23NO compound, revealing a twist-chair conformation of its cyclo-hepta-none ring. The amino-methyl group is equatorial, and molecules form hydrogen-bonded chains in the crystal lattice.
Area of Science:
- Organic Chemistry
- Crystallography
- Molecular Structure
Background:
- Understanding the three-dimensional structure of organic compounds is crucial for predicting their chemical properties and reactivity.
- Conformational analysis helps elucidate the preferred spatial arrangement of atoms within a molecule.
- Intermolecular forces, such as hydrogen bonding, play a significant role in the solid-state packing and properties of crystalline materials.
Purpose of the Study:
- To determine the precise molecular and crystal structure of the title compound (C20H23NO).
- To analyze the conformation of the cyclo-hepta-none ring and the stereochemistry of the substituents.
- To investigate the intermolecular interactions present in the crystalline state.
Main Methods:
- Single-crystal X-ray diffraction was employed to collect diffraction data.
- The crystal structure was solved and refined using standard crystallographic techniques.
- Analysis of the molecular geometry and intermolecular contacts was performed.
Main Results:
- The cyclo-hepta-none ring was found to adopt a twist-chair conformation.
- The amino-methyl substituent was observed in an equatorial position.
- The relative configuration of the two stereocenters was determined to be R,R.
- Molecules are linked by N-H⋯O hydrogen bonds, forming chains along the [100] crystallographic direction.
Conclusions:
- The study provides a detailed structural characterization of the C20H23NO compound.
- The observed conformation and stereochemistry offer insights into the molecule's spatial arrangement.
- The hydrogen bonding network highlights the intermolecular forces governing crystal packing.
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