no abstract

The Bahamian octocoral Pseudopterogorgia elisabethae is the source of pseudopterosins, diterpene glycosides with potent anti-inflammatory activity. The first committed step in pseudopterosin biosynthesis comprises the cyclisation of the universal diterpene precursor geranylgeranyl diphosphate to eli...

Abstract: The interconversion of cyclobutene-1,2-diones (1) and 1,2-bisketenes (RC=C=O)2 (2) has been surveyed for different combinations of substituents R = H, Me, t-Bu, Ph, Me3Si, CN, Cl, Br, R1O, alkynyl, and PhS. The bisketenes 2 have been generated by flash photolysis, and the kinetics of their...

The polarity-sensitive fluorescent dye Nile Red forms association complexes with various cyclodextrins in aqueous solution. The formation of such association complexes has a significant effect on the Nile Red fluorescence, with the largest effect being observed in gamma-cyclodextrin solution. When g...

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The effect of alpha-, beta-, and gamma-cyclodextrin (CD) and their hydroxygropylated (HP) derivatives on the solubility and fluorescence of the compound curcumin has been studied. Curcumin, the main constituent of the Indian spice turmeric, is of growing interest due to its wide-ranging pharmaceutic...

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Oxidation of Cr[N(SiMe3)(2)](2)(THF)(2) with iodine and dicumyl peroxide results in tetrahedral Cr(IV)Cr[N(SiMe3)(2)](2)I-2 and trigonal planar Cr(III) Cr[N(SiMe3)(2)](OCMe2Ph)(2), respectively; both complexes have been characterised by single-crystal X-ray diffraction, and both are active for ethyl...

Cyclic aryl ethers, thioethers or amines, and methods for synthesis are
disclosed. These cyclic aryl compounds are synthesized by combining a first
dinucleophile with a substituted benzene metallized electron-withdrawing
complex,
having halo or nitro substituent groups, to form a li...

Cyclic aryl ethers, thioethers or amines, and methods for synthesis are
disclosed. These cyclic aryl compounds are synthesized by combining a first
dinucleophile with a substituted benzene metallized electron-withdrawing
complex,
having halo or nitro substituent groups, to form a li...

Polarog. half-wave potentials for 2 redn. steps of 49 cyclopentadienyliron complexes of substituted arenes or heterocycles in DMF were detd. A fast cyclic voltammetry (10-40 V/s) was used to study the electron transfer kinetics of some of these complexes. After correction for the double layer effect...

Over the past few decades, there was tremendous interest in the chem. of arenes coordinated to transition metal moieties due to their applications in the fields of org. and polymer synthesis. The electrophilicity of coordinated arenes allows for reactions with a no. of C-, O-, N- and S-contg. nucleo...

Nucleophilic substitution reactions with the cyclopentadienyliron (CpFe) complex of m- or p-Cl2C6H4 with carbanion nucleophiles derived from Et acetoacetate (EAA), dibenzoylmethane (DBM) or diacetylmethane gave only monosubstitution as previously obsd. for the CpFe complex of o-Cl2C6H4. Reaction of ...

The electrochem. behavior of cyclcopentadienyliron contg. complexes and polymers has given rise to useful materials, such as electrochem. probes for biol. systems, electrocatalysts, and electrochem. switches.The development of new systems contg. cyclopentadienyliron complexes can only improve and in...

Polynorbornenes contg. cationic cyclopentadienyliron moieties were prepd. via ring-opening metathetic polymn. of metalated norbornene monomers in the presence of a Ru-based catalyst. The resulting organometallic polymers were characterized using spectroscopic, electrochem., and thermal techniques. [...

A review presents all classes of macromols. contg. iron-carbon bonds and highlights some examples of these materials. Ferrocene-based polymer, polymers contg. cyclopentadienyliron complexed arenes or iron carbonyl complexes, iron polyynes, and polymer with Fe-Fe bond are discussed. The methods utili...