Ruthenium phosphate complex

The addition to a double bond is observed in aromatic substrates where the reaction is assisted by chelation. The initial success of such reactions was achieved with the double alkylation of phenol with ethene (Equation (2)).1 This reaction occurs at the or/ -positions selectively by using an orthometallated ruthenium phosphate complex 1. 

Tris(2,2 -bipyridine)iron(3+) ion, 14 549 Tris(2,2 -bipyridine)iron(2+) ion, 14 549 Tris(2,2 -bipyridyl)ruthenium(II) complex chemiluminescence reagent, 5 856-857 Tris(2,3-dibromopropyl) phosphate, 11 502 Tris(2,3-dihydroxypropyl)isocyanurate, 8 204... 

The equihbrium constant of 3.4 0.5 at 25°C, pH 7.0 for the rapid electron equilibration step (Eq. 24) in bovine COX (49) corresponds to a difference in reduction potentials between the heme-a [Fe /Fe°] and Cua [Cu /Cu ] couples of 31 4 mV, which differs from earlier values, where an eP = 276 mV was reported for heme-a and 288 mV for Cua, that is, a difference of 12mV (154). The discrepancy is not surprising, however, considering the disparate experimental conditions employed in the earlier studies O.IM phosphate buffer saturated with 1 atm CO, which maintains heme a3-CuB in the reduced state. The observed equilibrium constant of 3.4 is in good agreement with results obtained by Kobayashi et al. (151) (X 1—4) and by Einarsdottir and co-workers (K = 2) (155). In experiments where a binuclear polypyridine ruthenium(ll) complex (bound electrostaticaUy to cytochrome oxidase) was... 

Treatment with the nickel(II) complex of the tripeptide glycine-glycine-histidine in the presence of magnesium monoperoxyphthalate Visible light irradiation in the presence of tris(bipyridyl)ruthenium(II) dication and ammonium persulfate Ethylmercury phosphate Fluorescein... 

Bis(trimethylsilyl) peroxide, (CH3)3SiOOSi(CH3)3, is prepared from trimethylsilyl chloride, l,4-diaza[2,2,2]bicyclooctane, and Dabco s complex with 2 mol of hydrogen peroxide [127]. It is used alone [228] or in the presence of catalysts such as pyridinium dichromate [236] trimethylsilyl trifluoromethanesulfonate, CF3S03Si(CH3)3 [228, 237] or tris-(triphenylphosphine)ruthenium dichloride, [(C6H5)3P]3RuCl2 [236]. This reagent oxidizes primary alcohols to aldehydes (in preference to the oxidation of secondary alcohols to ketones [236]), ketones to esters or lactones Baeyer-Villiger reaction) [238], and nucleoside phosphites to phosphates [228]. All these oxidations require anhydrous conditions. 

We recently incorporated the ruthenium(II) bipyridyl moiety into acyclic, macrocyclic, and lower rim caUx[4Jarene structural frameworks to produce a new class of anion receptor capable of optical and electrochemical sensing (226, 253. 254). Stability constant determinations in DMSO using H NMR titration techniques demonstrated that these acyclic receptors (131 and 132) form strong complexes with chloride and dihydrogen phosphate anions (stronger than with analogous monopositive cobaltocenium based receptors). The ruthenium ion is dipositive and hence the electrostatic interactions are particularly favorable. The 4,4 -substituted ruthenium bipyridyls were observed to bind anions more... 

---