M Propylbenzene

Potassium hydroxide, alcoholic, 7, 77 Potassium iodide, 4, 37 7, 14, 58 Potassium permanganate, 7, 18 8, 68 Potassium Phthalimide, 7, 8, 78 Potassium sulfate, 6, 2 Prest-o-lite tank, 8, 10 Propane-1, 1, 2, 3-Tetracarboxyuc Ester (Ethyl), 4, 29, 77 m-Propylbenzene, 4, 59 t 50-Propyl chloride, 5, 28 i-Propy] chloride, 5, 28... 

Benzene, Ethyl- 1,2,4-Trim ethyl- M-Propylbenzene, 2-Pentafuran,... 

In an attempt to prepare propylbenzene a chemist alkylated benzene with 1 chloropropane and aluminum chloride However two isomeric hydrocarbons were obtained m a ratio of 2 1 the desired propylbenzene being the minor component What do you think was the major product How did it anse ... 

FIGURE l.l Hydrophobic interaction and reversed-phase chromatography (HIC-RPC). Two-dimensional separation of proteins and alkylbenzenes in consecutive HIC and RPC modes. Column 100 X 8 mm i.d. HIC mobile phase, gradient decreasing from 1.7 to 0 mol/liter ammonium sulfate in 0.02 mol/liter phosphate buffer solution (pH 7) in 15 min. RPC mobile phase, 0.02 mol/liter phosphate buffer solution (pH 7) acetonitrile (65 35 vol/vol) flow rate, I ml/min UV detection 254 nm. Peaks (I) cytochrome c, (2) ribonuclease A, (3) conalbumin, (4) lysozyme, (5) soybean trypsin inhibitor, (6) benzene, (7) toluene, (8) ethylbenzene, (9) propylbenzene, (10) butylbenzene, and (II) amylbenzene. [Reprinted from J. M. J. Frechet (1996). Pore-size specific modification as an approach to a separation media for single-column, two-dimensional HPLC, Am. Lab. 28, 18, p. 31. Copyright 1996 by International Scientific Communications, Inc.. Shelton, CT.]... 

Solution "What is an immediate precursor of the target " The final step will involve introduction of one of three groups—chlorine, propyl, or sulfonic acid—so we have to consider three possibilities. Of the three, the chlorination of o-propylbenzene-sulfonic acid can t be used because the reaction would occur at the wrong position. Similarly, a Friedel-Crafts reaction can t be used as the final step because this reaction doesn t work on sulfonic acid-substituted (strongly deactivated) benzenes. Thus, the immediate precursor of the desired product is probably m-chloropropyl-benzene, which can be sulfonated to give a mixture of product isomers that must then be separated. 

Fig. 25. Ion image of photoffagment (a) m/e = 91, (b) m/e = 29, from photodissociation of ro-propylbenzene at 193 nm. The delay times between pump and probe laser pulses are 28 fas and 8 fas, respectively, (c) The translational momentum distributions of m/e = 29 (thin solid line) and 91 (thick solid line), (d) The fragment translational energy distribution for the reaction C6H5C3H7 —> C6H5CH2 + C2H5.

Sanemasa, I., Arakawa, S., Araki, M., Deguchi, T. (1984) The effects of salts on the solubility of benzene, toluene, ethylbenzene and propylbenzene in water. Bull. Chem. Soc. Jpn. 57, 1359-1544. 

The most fundamental reaction is the alkylation of benzene with ethene.38,38a-38c Arylation of inactivated alkenes with inactivated arenes proceeds with the aid of a binuclear Ir(m) catalyst, [Ir(/x-acac-0,0,C3)(acac-0,0)(acac-C3)]2, to afford anti-Markovnikov hydroarylation products (Equation (33)). The iridium-catalyzed reaction of benzene with ethene at 180 °G for 3 h gives ethylbenzene (TN = 455, TOF = 0.0421 s 1). The reaction of benzene with propene leads to the formation of /z-propylbenzene and isopropylbenzene in 61% and 39% selectivities (TN = 13, TOF = 0.0110s-1). The catalytic reaction of the dinuclear Ir complex is shown to proceed via the formation of a mononuclear bis-acac-0,0 phenyl-Ir(m) species.388 The interesting aspect is the lack of /3-hydride elimination from the aryliridium intermediates giving the olefinic products. The reaction of substituted arenes with olefins provides a mixture of regioisomers. For example, the reaction of toluene with ethene affords m- and />-isomers in 63% and 37% selectivity, respectively. 

Figure 2.2 Separation of aromatic compounds using isocratic elution. Conditions column, 5 pm Cis-bonded silica gel, 15 cm x 4.6 mm i.d. eluent, 0.001 M phosphoric acid in 55% aqueous acetonitrile flow rate, 1ml min-1 temperature, ambient, detection, UV 254 nm. Peaks 1, phenol, 2, 4-methylphenol 3, 2,4-dimethylphenol 4, 2,3,5-trimethylphenol 5, benzene, 6, toluene, 1, ethylbenzene, 8, propylbenzene and 9, butylbenzene.

Note Normally inhibited with 8-12 ppm 4-7er7-butylcatechol to prevent polymerization. According to Chevron Phillips Company (March 2002), 99.93% styrene contains the following components (ppm) benzene (<1), toluene (<1), ethylbenzene (50), a-meth ylstyrene (175), m + p-xylene (120), o-xylene (125), isopropylbenzene (100), / -propylbenzene (60), m + p-ethyltoluene (20), vinyltoluene (10), phenylacetylene (50), m + p-divinylbenzene (<10), o-divinylbenzene (<5), aldehydes as benzaldehyde (15), and peroxides as benzoyl-peroxides (5). 

Al-Kandary, J., Al-Jimaz, A.S., and Abdul-Latif, A.-H.M. Densities, viscosities, and refractive indices of binary mixtures of anisole with benzene, methylbenzene, ethylbenzene, propylbenzene, and butylbenzene at (293.15 and 303.15) K, /. Chem. Eng. Data, 51(1) 99-103, 2006. 

Asmanoca, N. and Goral, M. Vapor pressmes and excess Gibbs energies in binary mrxtmes of hydrocarbons at 313.15 K. 1. Methylcyclohexane-benzene, -toluene, -o-xylene, /rxylene, -ethylbenzene, and -propylbenzene, J. Chem. Eng. Data, 25(3) 159-161, 1980. 

In the reverse TALSPEAK process, the An(III) + Ln(III) fraction is first coextracted from a feed, the acidity of which has to be reduced to 0.1 M by denitration or nitric acid extraction. An(III) are then selectively stripped using DTPA in citric acid (1 M) at pH 3 (hence the name reverse TALSPEAK process), and the Ln(III) are finally stripped by 6 M HN03. Attempts to apply this TALSPEAK variant to the treatment of actual UREX + raffinates are reported in the literature, but they involve several steps. The problematic Zr and Mo elements are first removed by direct extraction with HDEHP (0.8 M in di-iso-propylbenzene) from the high-acidity raffinate stream arising from the UREX + co-decontamination process (238). The remaining fission products and actinides can then be concentrated by acid evaporation and denitration processes. This concentrate is further diluted to a lower acidity (e.g., [HN03] = 0.03 M) to allow the coextraction of An(III) and Ln(III) by the TALSPEAK solvent. 

Aromatic hydrocarbons Benzene, toluene, ethylbenzene, propylbenzene, 1,3,5-trimethylbenzene, 1,2,4-trimethylbenzene, 1,2,3-trimethylbenzene, tert-butylbenzene, o,m,p-xylene, p-cymene, styrene, alpha-methylstyrene, naphthalene, methylnaphthalene... 

Answer X-g is a meta substituted aryl halide (m-bromo-propylbenzene). 

Table I gives the results from the experiments with [M(PC)] supported on Si02 The conversion of quinoline is almost exclusively to 1,2,3,4-tetrahydroquinoline with only traces of other products (<1%). No propylaniline, propylbenzene, propyl-cyclohexane, 5,6,7,8-tetrahydroquinoline or decahydroquinoline were noted. No change is noted in the conversions when the SiC>2 is activated in vacuo at 400°C prior to supporting the complex. When the hydrogenations are run at 200°C only low conversions are...

Figure 4, Separation of Cg-CQ aromatic hydrocarbons on thg column with liquid°crystal EBO, 48 m x 0,25 mm at 40°C l=benzene, 2=toluene, 3=ethylbenzene, 4=m-xylene, 5=p-xylene, 6=isopropylbenzene, 7=o-xylene, 8= n-propylbenzene and 9=styrene,...

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