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7-Chloro-1-(2,6-difluorophenyl)-1H,3H-thiazolo
F Nicoló1, G Bruno, R Scopelliti
1Dip. di Chimica Inorganica, Chimica Analitica e Chimica Fisica, Universitá degli Studi di Messina, Via Salita Sperone 31, I-98166 Vill. S. Agata, Messina, Italy. fnicolo@unime.it
Summary
Two novel molecules exhibit a butterfly-like conformation, featuring a flat thiazolobenzimidazole system. Their unique structure, influenced by hydrogen bonds and fluorine-sulfur interactions, positions the aryl group perpendicularly to the main system.
Area of Science:
- Medicinal Chemistry
- Organic Chemistry
- Structural Chemistry
Background:
- Thiazolobenzimidazole derivatives are known for diverse biological activities.
- Understanding the conformational preferences of novel heterocyclic compounds is crucial for drug design.
Purpose of the Study:
- To synthesize and characterize two novel thiazolobenzimidazole derivatives.
- To elucidate the three-dimensional structure and conformational analysis of the title molecules.
- To investigate the non-covalent interactions governing the observed molecular arrangement.
Main Methods:
- Synthesis of C(15)H(9)ClF(2)N(2)S and C(16)H(12)F(2)N(2)S.
- Single-crystal X-ray diffraction analysis.
- Conformational analysis and computational modeling (implied).
Main Results:
- Both molecules adopt a characteristic butterfly-like conformation.
- A planar thiazolobenzimidazole core was observed.
- The 2,6-difluorophenyl ring is oriented nearly perpendicular to the tricyclic system.
- Two intramolecular hydrogen bonds and an attractive F···S interaction were identified as key stabilizing forces.
Conclusions:
- The butterfly conformation is a stable and recurring motif in these thiazolobenzimidazole derivatives.
- Intramolecular hydrogen bonding and F···S interactions play a significant role in dictating the molecular geometry.
- The findings provide insights into the structure-activity relationships of this chemical class.