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Electrochemical reduction of the cyclopentadienyliron hexafluorophosphates of benzophenone, o-chlorophenyldibenzoylmethane and diethyl ethylphenylmalonate led to the liberation of arenes without reduction of keto or ester groups in over 85% yields.
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Various four-arm organoiron macromols. contg. different azo dye moieties have been prepd. via metal-mediated nucleophilic arom. substitutions and ester condensation reactions. The synthesis of a four-arm organoiron star contg. aryl- and hetaryl-azo chromophores (7) and a cross-linked azo dye-contg. ...
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Utilizing organoiron-mediated nucleophilic arom. substitution, a no. of allylamine-contg. organoiron complexes were prepd. Amide formation between 1,1'-ferrocene dicarbonyl chloride and allylamine produced a similar ferrocene compd. These materials were subjected to hydrosilation with methyldiethoxy...
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Nucleophilic aromatic substitution of cyclopentadienyliron complexes of chloroarenes with oxygen-containing nucleophiles led to the isolation of a number of aromatic ether complexes (2, 5a−e) in very good yields. Reactions of these complexes with 1-naphthol, followed by removal of the cyclopentadi...
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Interest in organometallic polymers is due to their applications as chem. sensors, electrocatalysts, modified electrodes and photo-active mol. devices. The incorporation of organometallic moieties into the backbone of org. mols. has modified the optical, magnetic and thermal properties of these syst...
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The homodinuclear [ClM(μ-dppm)2MCl] complexes 1 (M = Pd) and 2 (M = Pt) react with RNC ligands (R = Ph, xylyl, p-tolyl, p-C6H4iPr) to provide the A-frame [ClPd(μ-dppm)2(μ-C:N-R)PdCl] (R = Ph (5a), xylyl (5b)), [ClPt(μ-dppm)2(μ-C:N-R)PtCl] (R = p-tolyl (4a); p-C6H4iPr (4b)), and the d9...
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The near-edge x-ray absorption fine structure (NEXAFS) spectra of poly(Ph thioether) polymers with pendant Fe(Cp) iron moieties have been recorded at the carbon 1s, iron 2p, and phosphorus 1s and 2p edges. This study shows that soln. photofragmentation of the organometallic polymer causes the remova...
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Some new diaminochromenes (3a-f, 7a-c, and 10), 7-amino-4-aryl-coumarins (8a,b), 7-hydroxy-4-aryl-1,2-dihydroquinolines (9a-c) and 2-amino-7-hydroxy-4-(4-chlorophenyl)-4H-chromenes (16a-d) were synthesized via Michael addition of different substituted aminonaphthol (1), aminophenol (6), resorcinol d...
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Recent development in the field of organometallic and coordination polymers based on transition metals, particularly the methods and degree of polymerization, the nature of bonding present, and the type of metal moiety, has become an area of ever-growing interest. Metal-containing polymers have cata...
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Recently, we have focused on the synthesis of monomeric and polymeric cationic organoiron functionalized with azo dyes. In this presentation we will describe the synthesis of novel polyferrocene incorporating azo dyes and pendent cyclopentadienyliron cations. Condensation of 1,1'-ferrocenedicar...
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A modified synthesis of 25-allyl-26,27,28-trihydroxycalix[4]arene is reported. This calix[4]arene was utilized to prepare calix[4]arenes containing norbornene and calix[4]arene containing azo dyes and norbornene on their upper rims. The calixarene monomers were reacted with Grubbs' second generation...
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This article is one of a number of reviews in the special issue of the Journal of Inorganic and Organometallic Polymers and Materials, celebrating the 50th anniversary of the discovery of metallocene-based polymers. Since the first examples of polyferrocenes in 1955, research into the design of orga...
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Synthesis of novel organoiron polymers containing oxygen, sulfur, and/or nitrogen bridges was achieved via nucleophilic aromatic substitution polymerization of cyclopentadienyliron complexes of chloroarenes with a number of aliphatic and aromatic dinucleophiles.
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Ring-opening metathesis polymn. of organoiron norbornene monomers functionalized with azobenzene chromophores using the Grubbs catalyst was carried out to prep. the corresponding cationic organoiron polynorbornenes. The chiral monomers were prepd. by coupling reactions of complexes and 5-norbornene-...
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The article provides an overview of the synthesis, properties, and applications of metal-containing polymers. The past decade has shown an exponential increase in synthetic methods, resulting in metal-containing polymers, their characterization techniques, and their potential application into a vari...
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The ring-opening metathesis copolymerizations of deltacyclene, substituted deltacyclene, and norbornene was achieved using RuCl3, ReCl5, and molybdenum alkylidene catalysts. The reaction conditions employed are similar to those used previously in the syntheses of homopolymers. The low conversion cop...
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Sol. organoiron polyethers, thioethers, and amines were synthesized via nucleophilic arom. substitution reactions. The synthesis of these classes of organometallic polymers involved either the reaction of cyclopentadienyliron complexes of dichloroarenes with various oxygen and sulfur dinucleophiles ...
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Photolytic demetallation of cyclopentadienyliron complexes was investigated. Effects of solvent nucleophilicity, counter anion, wavelength, and nature of the arene were studied. Initial results indicate a dependence on the wavelength of the light source as well as the duration of photolysis, with de...
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A review. Studies on metal-contg. polymers are discussed with focus on current and future applications of the materials in catalysts, biochem. and therapeutics, optoelectronics, sensors, etc.