✦ LIBER ✦
Synthesis, crystal structure and dynamic behavior of naphthalene-based calix[3]amide: Cyclic trimers of 2-alkylamino-6-naphthoic acid
✍ Scribed by Kosuke Katagiri; Kanako Sawano; Miho Okada; Shiho Yoshiyasu; Reiko Shiroyama; Norio Ikejima; Hyuma Masu; Takako Kato; Masahide Tominaga; Isao Azumaya
- Book ID
- 103838316
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 851 KB
- Volume
- 891
- Category
- Article
- ISSN
- 0022-2860
No coin nor oath required. For personal study only.
✦ Synopsis
Treatment of 6-amino-2-naphthoic acid with dichlorotriphenylphosphorane afforded a new naphthalene ring-based calix[3]amide in moderate yield. The macrocyclic calix[3]amide exists in an anti-form in the crystalline state and forms a channel structure along its b axis. In CDCl3 solution it exists in equilibrium between the syn-and anti-forms in solution (100:57). The energy barrier between the anti-to syn-forms was calculated to be 17.8 ± 0.2 kcal/mol.