2003年4月
Static and dynamic stereochemistry of O-substituted N-9-triptycylhydroxylamines
Bulletin of the Chemical Society of Japan
- ,
- ,
- 巻
- 76
- 号
- 4
- 開始ページ
- 825
- 終了ページ
- 829
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1246/bcsj.76.825
The static and dynamic stereochemistry of N-9-triptycylhydroxylamine derivatives (TpNHOR) with O-benzyl (3), O-ethyl (4), and O-phenyl (5) groups were studied. X-ray crystallographic analysis revealed that these compounds reside in a chiral conformation, with the Tp-N-O-R dihedral angle of 140-160°. Dynamic NMR studies of 3 and 4 show the presence of two separate stereomutation processes: chirality reversal (enantiomer interconversion) and rotation of the Tp-N bond with retaining the chirality, the latter having a lower energy barrier. Compound 5 gave solely information on the Tp-N rotation because of the lack of a probe for chirality reversal.
- リンク情報
- ID情報
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- DOI : 10.1246/bcsj.76.825
- ISSN : 0009-2673
- ORCIDのPut Code : 51044796
- SCOPUS ID : 0038336170