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Hydroxyl aromatics

Bis (trimethyl silyl) peroxide (CH2)3SiOOSi(CH2)3 can be used with triflic acid (CF SO H) and acts as an effective hydroxylating agent of aromatics such as toluene, mesitylene and naphthalene (165). Sodium perborate (a safe and inexpensive commercial chemical) can be used in conjunction with the triflic acid to hydroxylate aromatics (166). [Pg.561]

Direct spectrophotometric methods have been proposed for both particulate and dissolved lignosulfonic materials. Kloster [436] used the Folin Ciocal-teumethod, which actually measures hydroxylated aromatic compounds. A general review of spectrophotometric methods was published by Bilikova [437]. [Pg.431]

Hydroxylation Aromatic, allylic, benzylic CYP4S0 or flavin Phenols... [Pg.8]

Burke Jr TR, Fesen MR, Mazumder A, Wang J, Carothers AM, Grunberger D, Driscoll J, Kohn K, Pommier Y. Hydroxylated aromatic inhibitors of HIV-1 integrase. JMed Chem 1995 38 4171-4178. [Pg.116]

Aromatic hydroxylation. Aromatic hydroxylation such as that depicted in Figure 4.3 for the simplest aromatic system, benzene, is an extremely important bio transformation. The major products of aromatic hydroxylation are phenols, but catechols and quinols may also be formed, arising by further metabolism. One of the toxic effects of benzene is to cause aplastic... [Pg.83]

Oxidation. Although most of the common mammals used as experimental animals carry out oxidation reactions, there may be large variations in the extent to which some of these are carried out. The most common species differences are in the rate at which a particular compound is oxidized rather than the particular pathway through which it is metabolized. Most species are able to hydroxylate aromatic compounds, but there is no apparent species pattern in the ability to carry out this metabolic transformation. [Pg.138]

Benzofurans from o-Hydroxylated Aromatic Ketones and Aromatic Haloketones... [Pg.430]

BenzOfurans from o-Hydroxylated Aromatic Carbonyl Compounds and Ethyl Bromomalonate... [Pg.433]

Fenton s reagent hydroxylates aromatic rings, generally with low yields, at the more nucleophilic carbon positions, and gives substantial amounts of biaryl by-products resulting from the dimerization of intermediate radical species (equation 217).491... [Pg.379]

However, the same catalytic system did not hydroxylate aromatic compounds in a way significantly different from usual aqueous Fenton s reagents.529... [Pg.380]

Specialty Chemicals amino acids, enzymes, vitamins, lipids, hydroxylated aromatics, biopolymers. [Pg.3]

The kinetics show two regimes a low-concentration regime that is zero order in [CPOH], and a second regime at higher concentrations where the rate displays saturation-type kinetics reminiscent of Langmuir-type behavior in solid/gas systems. It suggests that the reaction takes place in the solution bulk at low concentrations of chlorophenol, while at the higher concentrations the reaction occurs predominantly at the gas bubble-liquid interface. Chlorophenols are decomposed and dechlorinated almost quantitatively to form hydroxylated aromatic intermediate products subsequently, species with fewer carbon atoms remained undetectable under these conditions. [Pg.450]


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See also in sourсe #XX -- [ Pg.155 ]




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