A conformational study of [3.3](3,5)pyridinophane
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A variable temperature [1]H NMR study of the [3.3](3,5)pyridinophane indicated that the syn(chair/chair) is more stable than syn(chair/boat) by 0.2 kcal/mol in solution, whereas the trimethylene bridges show disorder even at －150 °C in the solid state. A transition state search by ab initio MO calculations suggested two competitive conformational changes for syn(chair/chair)–syn(chair/boat) conversion via a bridge wobble or a ring inversion in the [3.3](3,5)pyridinophane.
- Elsevier Ltdの論文
- 2009-03-00
Elsevier Ltd | 論文
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