Aromatics reacting with

Acyl halides, both aliphatic and aromatic, react with the sodium derivative, but the product depends largely on the solvent used. Thus acetyl chloride reacts with the sodium derivative (E) suspended in ether to give mainly the C-derivative (t) and in pyridine solution to give chiefly the O-derivative (2). These isomeric compounds can be readily distinguished, because the C-derivative (1) can still by enolisation act as a weak acid and is therefore... 

Polynuclear aromatics react with fluoroxy reagents to give high yields of ortho substitution products accompanied by varying yields of geminal difluoro products Thegeminal difluonnation occurs presumably by an addition-elimination mechanism [27 28, 29, 30, 31, 32] Unactivated aromatic systems are fluorinated in lower yield to give monofluonnated products (Table 1, entries 6 and 7) Examples of fluonnation of polynuclear systems [/5, 21, 25, 30, 32, 7 ] are shown m equations 7-10... 

In the dissociative mechanism, the tt complex adsorbed aromatic reacts with a metal radical (active site) by a substitution process. During this reaction [Eq. (9)] the molecule rotates through 90°, and changes from its horizontally tt complex adsorbed position to a vertically cr-bonded chemisorbed state ... 

Aromatics react with olefins very readily when potassium is used as a catalyst. However, potassium is less selective in catalyzing alkylation than sodium because an additional reaction yields indans, as reported by Schaap and Pines 24). Therefore, the products consist of mixtures of arylalkanes and indans the relative amount of each depends largely on the aromatic used (as shown in Table II). The degree of alkyl substitution of the o -carbon... 

Extensive work on the interaction of aromatic compounds with xenon difluoride has been carried out in order to investigate the reaction mechanism and the scope of the fluorination depending on the substituents electronic nature.26-59 62 It has been found that benzene and substituted aromatics react with xenon difluoride at room temperature in the presence of hydrogen fluoride to form the typical products of electrophilic fluorination contaminated with low quantities of difluoro-substituted molecules. 

Rate constants for the reaction of hydroxyl radicals with different compounds were determined by Haag and Yao (1992) and Chramosta et al. (1993). In the study of Haag and Yao (1992) all hydroxyl radical rate constants were determined using competition kinetics. The measured rate constants demonstrate that OH0 is a relatively nonselective radical towards C-H bonds, but is least reactive with aliphatic polyhalogenated compounds. Olefins and aromatics react with nearly diffusion-controlled rates. Table 4-3 gives some examples comparing direct (kD) and indirect (kR) reaction rate constants of important micropollutants in drinking water. 

Non-activated aromatics react with tellurium tetrachloride in the presence of Lewis acids. However, mixtures of aryltellurium trichlorides 5 and diaryltellurium dichlorides 6 can be formed,56 since 5 are also electrophiles and can react further with the aromatic substrate leading to 6. 

Electron-rich aromatics react with ASCI3 in the presence or absence of Lewis acids (equation 90) . ... 

Secondary amines, both aliphatic and aromatic, react with nitrous acid to yield N-nitrosoamines. 

These electrophilic substitutions are used most extensively for Hg. As well as aliphatics, aromatics react with Hg salts. 

Highly reactive aromatics react with the reagent anthracene— 9-anthroic acid bromide (52%). Ketones undergo a-bromocarbonylation in yields of the order of IO-40%.- ... 

Use Stibonium salts, cocatalyst in converting trienes to aromatics and hydro aromatics, reacts with nitric-sulfuric acid to give trinitro derivatives, polymerization inhibitor, lubricating-oil additive. 

Tocopherol can be isolated from plant oils, but purification is tedious. Several total syntheses, including a few industrial ones, are similar to carotene syntheses involving the repeated application of the Wittig reaction. The side chain of ubiquinones and vitamins E and K has been introduced by using vinylketones and benzyl chlorides as educts in the presence of a Ni(0) catalyst. Pd(0) does not work Electron-rich and electron-poor aromatics react with equal facility. 

In support of the argument for the surface-bound hydroxyl radical mechanism, there is an intermediate presence of hydroxylated structures during the photocatalytic degradation of halogenated aromatics. These hydroxylated intermediates are also found when similar aromatics react with a known source of hydroxyl radicals. Furthermore, ESR studies confirm the existence of hydroxyl and hydro-peroxy radicals in aqueous solutions of illuminated Ti02 (Hoffman et al., 1995 Linsebigler et al., 1995). 

Fluorosulfonation. Aromatics react with HSO3F in the presence of variable amounts of antimony (V) fluoride to give aromatic sulfonyl fluorides and dlaryl sulfones. 

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