| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5233469 | Tetrahedron | 2005 | 7 Pages |
Abstract
Dipyridylthieno[2,3-b]thiophenes 2a and 2b exhibit syn/anti atropisomerism with energy barrier to rotation ÎGâ in the range of 17-18 kcal/mol, whereas 2c and 2d exhibit free rotation at least up to â50 °C with ÎGâ â¤10 kcal/mol.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
![Dipyridyl/pyridinium thieno[2,3-b]thiophenes as new atropisomeric systems. Synthesis, conformational analysis and energy minimization](/preview/png/5233469.png "First Page Preview: Dipyridyl/pyridinium thieno[2,3-b]thiophenes as new atropisomeric systems. Synthesis, conformational analysis and energy minimization")
Authors
Sabir H. Mashraqui, Yogesh Sangvikar, Mohamed Ashraf, Sukeerthi Kumar, Elise Trân Huu Dâub,