90558-10-4Relevant academic research and scientific papers
Chiral spherical molecule constructed from aromatic amides: Facile synthesis and highly ordered network structure in the crystal
Masu, Hyuma,Katagiri, Kosuke,Kato, Takako,Kagechika, Hiroyuki,Tominaga, Masahide,Azumaya, Isao
, p. 5143 - 5146 (2008)
(Chemical Equation Presented) A novel chiral spherical molecule composed of aromatic amide was synthesized in short steps. The molecule is constructed from four benzene rings connected by six amide bonds and has multiple functionalizable points and an asymmetric structure. The racemic spherical molecule constructed channel network structures in the crystalline state.
Calix[3]amide-based anion receptors: High affinity for fluoride ions and a twisted binding model
Katagiri, Kosuke,Furuyama, Taniyuki,Masu, Hyuma,Kato, Takako,Matsumura, Mio,Uchiyama, Masanobu,Tanatani, Aya,Tominaga, Masahide,Kagechika, Hiroyuki,Yamaguchi, Kentaro,Azumaya, Isao
scheme or table, p. 125 - 130 (2011/12/21)
Tris-phenylurea-substituted calix[3]amides (3a, 3b) and tris-phenylthiourea-substituted calix[3]amides (4a, 4b) were synthesised by the reaction of amine with isocyanates and thioisocyanate, respectively. Single crystal X-ray analysis revealed that the cyclic trimers adopt a syn conformation with all of the urea groups on the same side. The binding affinities of these compounds towards anions were measured using 1H NMR titrations in DMF-d7, DMSO-d6 or CDCl3. Each receptor was observed to bind halogen anions in a 1:1 stoichiometry, exclusively through hydrogen bonding, and the anion selectivity was in the order F- > Cl- ? Br- > I- . DFT calculations revealed that the fluoride anion is anchored in the centre of the six N-H hydrogen atoms of 3a through H...F interactions.
Calix[3]amides - Bowl-shaped cyclic trimers toward building block for molecular recognition: Self-complementary dimeric structure in the crystal
Imabeppu, Fumiaki,Katagiri, Kosuke,Masu, Hyuma,Kato, Takako,Tominaga, Masahide,Therrien, Bruno,Takayanagi, Hiroaki,Kaji, Eisuke,Yamaguchi, Kentaro,Kagechika, Hiroyuki,Azumaya, Isao
, p. 413 - 416 (2007/10/03)
Bowl-shaped cyclic trimers of aromatic amides were simply synthesized in high yield by condensation reaction of meta-substituted 3-(alkylamino)benzoic acid using dichlorotriphenylphosphorane. The cyclic amides exist in syn conformation, which has a small chiral cavity, and a pair of each enantiomeric conformer formed a dimeric structure in the crystal.
