Functionalised Cyclodextrins

Many of the most successful enzyme mimics have involved functionalised cyclodextrins, and the work of Breslow in particular is familiar to anyone who has followed the field. [24] These hosts bind aromatic rings within a hydrophobic cavity. In another seminal contribution Lehn [25,26] has used polyammonium macrocycles to catalyse phosphate transfer reactions of ATP, demonstrating that multiple hydrogen-bonds can also be an effective source of binding between flexible systems in aqueous solution. 

Irradiation of 2-[N-(pentafluorophenyI)amino]-3-phenylcyclopropenone promotes decarbonylation to give N-(pentafluorophenyl)phenylethynamine and 2-phenyl-3-[N-(pentafluorophenyl)amino]acrylic acid by a process for which there is no known precedent,and the photoextrusion of carbon monoxide from l,3-bis(ethylenedioxy)indan-2-one has been used as the first step in a new synthesis of 1,2-dioxobenzocyclobutene. This represents an unusual example of the decarbonylation of a five-membered cyclic ketone in the preparation of a highly strained and functionalised cyclobutane derivative. The photolysis of a-naphthaleneacetic acid in aqueous solution proceeds by decarboxylation and oxidation of the aromatic ring, and has been carried out at a variety of different wavelengths. The primary step occurs by pseudo-first order kinetics and the optimum photolysis rate has been observed using Ti02 as photocatalyst. Within the cavity of P-cyclodextrin, naproxene (129) has been photodecarboxylated to... 

Mases M, Noe M, Mercier G, Dossot M, Vigolo B, Mamane V, Fort Y, Soldatov AV, McRae E (2011) Effects on Raman spectra of functionalisation of single walled carbon nanotubes by nitric acid. Phys Status Solidi (B) Basic Res 248(11) 2552-2555 Masinga SP, Nxumalo EN, Mamba BB, Mhlanga SD (2013) Microwave-induced synthesis of p-cyclodextrin/N-doped caibon nanombe polyurethane nanocomposites for water purification. Phys Chem Earth... 

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