Acetylacetone reactions

Platinum blue formation, 2,265 Platinum complexes, S, 351-500 acetylacetone reactions, 2,380 acetylides reactions, 5,402 alcohols, 5,465 alkene-1,2-dithiolates optica] recording systems, 6,126 alkenes, 5,403 bonding, 5,403... 

Bisphosphanorhodium acetylacetonates, reaction with hexafluoroacetone, 30 289 Bis(p-indenyl) zirconium dichloride, 13 9 Bis (polfluoroalkyl) mercurials, 3 340 properties of, 3 343-344 Bis(polyazamacrocycles), production, 45 100 Bis(pyrazoiyl)borato ligands, 42 292... 

Pinacolone, o-(diphenylphosphino)benzoyl-coordination chemistry, 401 Piperidine, IV-hydroxy-metal complexes, 797 pA a values azole ligands, 77 Plant roots amino acids, 962 carboxylic acids, 962 Plastocyanin copper binding site, 557 copper(II) complexes, 772 copper(II) site in, 770 Platinum, dichlorobis(benzonitrile)-IR spectrum, 264 Platinum, cis-dichlorodianunine-antitumor activity, 34, 979 Platinum, ethylenebis(triphenylphosphine)-reactions with 5,6-dimethyl-2,l,3-benzothiadiazole, 194 Platinum blue formation, 265 Platinum complexes acetylacetone reactions, 380 amides, 491 amidines... 

Practically all linear 1,3-diketones13 7-142 give the corresponding pyrazoles with hydrazine104 143 and its derivatives.144-149 The reaction of aliphatic diketones should be moderated by dilution, cooling, or the addition of acid.137 Since pyrazole rings are stable, severe conditions may be used in their preparation where necessary. For details of the hydrazine/acetylacetone reaction see Wiley and Hexner.150 Evidently the reaction proceeds via the formation of the monohydrazone (11)151 which, when aryl-substituted, is less reactive and may be isolated.83,152-159 (However, see reference 159a.) It is not known if the monohydrazones are cyclic (12) or not, but they are... 

Fig. 3. Rate coefficients (log, 0 kf) for proton transfer from acetylacetone (keto-form) to oxygen bases (B) and rate coefficients (log,0 kr) for proton transfer from oxygen acids (BH+) to the enolate ion to give acetylacetone. Reactions refer to ionic strength 0.1 M and 300.7 °K in aqueous solution. Redrawn with permission from M.-L. Ahrens et al., Bunsenges. Phys. Chem., 74 (1970) 380.

The first report of a coordinated acetylacetone reaction was the bromination of the chromium(III) complex (equation 55). This was followed, more than 30 years later, by the nitration of copper(II) acetylacetonate with dinitrogen tetroxide (equation This result is... 

There are many effective catalyst systems, such as FeCt propylene oxide, diethylzlnc-water and trlalkylaluminum-water acetylacetone reaction products. For none is the exact structure of the catalyst site established. For all, the number of polymer molecules formed Is small compared to the metal atoms used to make the catalyst. This suggests that the fraction of metal atoms at catalyst sites must be at least as small. 

Maleic anhydride grafting (cont.) poly(styrene-co-divinylbenzene), 694 poly(styrene-co-isobutylene), 675, 689 poly(styrene-co-nfialeic anhydride), 676, 679 poly(vinyl acetate), 676, 694 poly(vinyl acetate-co-vinyl fluoride), 678 poly(vinyl alkyl ethers), 675, 679, 692, 701 poly(vinyl chloride), 683, 692, 693, 695, 702 poly(vinylidene chloride), 691 poly(vinyl toluene-co-butadiene), 689 radical—initiated, 459-462, 464-466, 471, 475, 476 radiation—initiated, 459, 461, 466, 471, 474 redox-initiated, 476 rubber, 678, 686, 687, 691, 694 to saturated polymers, 459-466, 475, 476 solvents used 460-463, 465, 466, 469, 474-476 styrene block copolymers, 679 tall oil pitch, 678, 697 terpene polymers, 679, 700 thermally-initiated, 462, 464-467, 469, 476 to unsaturated polymers, 459, 466-474 vapor-phase techniques, 464, 474, 475 to wool fibers, 476 Maleic anhydride monomer acceptor for complex formation, 207-210 acetal copolymerization, 316 acetone CTC thermodynamic constants, 211 acetone photo-adduct pyrolysis, 195, 196 acetylacetone reaction, 235 acetylenic photochemical reactions, 193-196 acrylamide eutectic mixtures, 285 acylation of aromatic acids, 97 acylation of aromatics, 91, 92 acylation of fused aromatics, 92, 95, 97, 98 acylation of olefins, 99 acylation of phenols, 94-96 acylic diene Diels-Alder reactions, 104-111, 139 addition polymer condensations, 503-505 adduct with 2-cyclohexylimino-cyclopentanedi-thiocarboxylic acid, 51 adducts for epoxy resins curing, 507-510 adduct with 2-iminocyclopentanedithiocarboxylic acid, 51... 

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