Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Carol Pérez-Casas"'
Autor:
Angélica M. Duarte-Hernández, Pablo A. Martínez, Carol Pérez-Casas, Jan Reedijk, Ariadna Garza-Ortiz, Angelina Flores-Parra, Norah Barba-Behrens, Marcos Flores-Alamo, Edgar Mijangos, Rosalinda Contreras, Carlos Camacho-Camacho
Publikováno v:
Journal of Molecular Structure. 1032:265-274
The oxidative cyclization of 2,6-bis[2,4-di-tert-butyl-6-(methylidenylamino)phenol]-pyridine (L1) in acetonitrile, through the cobalt(II) coordination compound of L1, has resulted in a convenient route for the preparation of 2,6-bis[5,7-di-tert-butyl
Publikováno v:
Journal of Inclusion Phenomena and Macrocyclic Chemistry. 68:387-398
Two thiacalix[4]arenes in 1,3-alternate conformation functionalized by two (CH2)2NH(C=X)NHC6H4-NO2-p groups (X = S,O) as well as two related monofunctional receptors MeO(CH2)2NH(C=X)NHC6H4-NO2-p were prepared and characterized by X-ray crystal struct
Publikováno v:
Journal of Inclusion Phenomena and Macrocyclic Chemistry. 68:99-108
A novel thiacalix[4]arene ditopic receptor with 1,3-alternate conformation and possessing two complexation sites for hard and soft cations, 5,11,17,23-tetra-tert-butyl-25,27-bis[(N,N-diethylaminocarbonyl)methoxy]-26,28-bis[(pyridylmethyl)oxy]-2,8,14,
Autor:
Mark R. J. Elsegood, Carol Pérez-Casas, Akina Yoshizawa, Takehiko Yamato, Carl Redshaw, Shofiur Rahman
Publikováno v:
Journal of Inclusion Phenomena and Macrocyclic Chemistry. 63:301-308
Novel ditopic receptors of tetraamide derivatives possessing four 2-pyridyl groups derived from thiacalix[4]arene in cone- and 1,3-alternate conformation were prepared. The structure of one of the tetraamide derivatives was confirmed by a single crys
Autor:
Carl Redshaw, Carol Pérez-Casas, Michael A. Rowan, Takehiko Yamato, Damien M. Homden, Mark R. J. Elsegood
Publikováno v:
Chemistry - A European Journal. 13:10129-10139
Treatment of p-tert-butylcalix[6]areneH(6) (H(6)tBu-L) or p-tert-butylcalix[8]areneH(8) (H(8)tBu-L(1)) with [MCl(5)] (M=Nb, Ta) in refluxing toluene or dichloromethane affords, after work-up, the complexes [{M(NCMe)Cl(2)}(2)(tBu-L)] (M=Nb (1), Ta (2)
Publikováno v:
Journal of Chemical Research. 2007:557-560
Novel thiacalix[4]arene tetraamides in cone- and 1,3- alternate conformation were prepared, in which the cone-tetraamide shows stronger intramolecular hydrogen bonding than 1,3- alternate-tetraamide. The two-phase solvent extraction data indicated th
Publikováno v:
Journal of Inclusion Phenomena and Macrocyclic Chemistry. 60:173-185
A novel ditopic receptor possessing two complexation sites such as crown ether and 2-pyridylmethyl groups bearing 1,3-alternate conformation based on thiacalix[4]arene was prepared. The binding behaviors with Li+ and Ag+ have been examined by 1H NMR
Publikováno v:
Journal of Inclusion Phenomena and Macrocyclic Chemistry. 58:383-388
A novel double thicalix[4]arene possessing two amide sites was prepared. The binding behavior with Ag+ has been examined by 1H NMR titration experiment. The association constants K ass of the amide sites are quite similar (K ass = 2.10 × 104 M−1 a
Autor:
Shofiur Rahman, Mark R. J. Elsegood, Takehiko Yamato, Zeng Xi, Carol Pérez-Casas, Carl Redshaw
Publikováno v:
Journal of Inclusion Phenomena and Macrocyclic Chemistry. 58:193-197
A novel receptor possessing two complexation sites and bearing 1,3-alternate conformation based on thiacalix[4]arene, confirmed by single crystal X-ray analysis, was prepared. The tetrathiacalix[4]arene diamide shows strong intramolecular hydrogen bo
Autor:
Damien M. Homden, Carl Redshaw, Sadahiko Matsuura, Shigekazu Matsui, Abdessamad Arbaoui, Michael A. Rowan, Carol Pérez Casas, Mark R. J. Elsegood, Lee Warford, Takehiko Yamato, Sophie H. Dale
Publikováno v:
Chemistry - A European Journal. 13:1090-1107
Reaction of [V(X)(OR) 3 ] (X=O, Np-tolyl; R=Et, nPr or tBu) with p-tert-butylhexahomotrioxacalix[3]areneH 3 , LH 3 , affords the air-stable complexes [{V(X)L} n ] (X=O, n=1 (1); X=Np-tolyl, n=2 (2)). Alternatively, 1 is readily available either from