799-13-3Relevant articles and documents
Synthesis of Monofunctionalized Calix[5]arenes
Ingenfeld, Bj?rn,Straub, Steffen,Fr?mbgen, Christopher,Lützen, Arne
, p. 676 - 684 (2017/11/16)
Seven OH-free and O -permethylated monofunctionalized calix[5]arenes carrying either additional methyl or tert -butyl groups are prepared following fragment condensation protocols. This strategy proves to be superior to previous approaches. Calix[5]arenes with free OH groups all adopt a cone conformation stabilized by a seam of hydrogen bonds at the lower rim. Post-condensation modifications, i.e., methylation of phenolic OH groups or functional group interconversions can also be achieved. Bulky tert -butyl groups are also found to stabilize the cone conformations of O -methylated compounds. These compounds offer versatile functional groups that make these concave molecules interesting building blocks for the synthesis of more sophisticated molecular architectures.
Calix[4]arene-functionalized poly-cyclopenta[2,1-b;3,4-b′] bithioplienes with good recognition ability and selectivity for small organic molecules for application in QCM-based sensors
Rizzo, Simona,Sannicolo, Franco,Benincori, Tiziana,Schiavon, Gilberto,Zecchin, Sandro,Zotti, Gianni
, p. 1804 - 1811 (2007/10/03)
Some C2v symmetric cyclopenta[2,1-b;3,4-b′]bithiophenes differently substituted at the 4 position with a calix[4]arene group were synthesized and electrochemically polymerized by anodic coupling. The polymers were characterized by cyclic voltam
Metal-template ortho-regioselective mono- and bis-de-tert-butylation of poly-tert-butylated phenols
Sartori, Giovanni,Bigi, Franca,Maggi, Raimondo,Porta, Cecilia
, p. 7073 - 7076 (2007/10/02)
A metal-template ortho-regioselective mono- and bis-de-tert-butylation of poly-tert-butylated phenol-formaldehyde oligomers is reported.
