ChemInform Abstract: π-Complexes of p-Block Elements: Synthesis and Structures of Adducts of Arsenic and Antimony Halides with Alkylated Benzenes.

ABSTRACT The soil fungus Cladophialophora sp. strain T1 (= ATCC MYA-2335) was capable of growth on a model water-soluble fraction of gasoline that contained all six BTEX components (benzene, toluene, ethylbenzene, and the xylene isomers). Benzene was not metabolized, but the alkylated benzenes (toluene, ethylbenzene, and xylenes) were degraded by a combination of assimilation and cometabolism. Toluene and ethylbenzene were used as sources of carbon and energy, whereas the xylenes were cometabolized to different extents. o-Xylene and m-xylene were converted to phthalates as end metabolites; p-xylene was not degraded in complex BTEX mixtures but, in combination with toluene, appeared to be mineralized. The metabolic profiles and the inhibitory nature of the substrate interactions indicated that toluene, ethylbenzene, and xylene were degraded at the side chain by the same monooxygenase enzyme. Our findings suggest that soil fungi could contribute significantly to bioremediation of BTEX pollution.

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Tandem 1,4-Addition Reactions with Benzene and Alkylated Benzenes Promoted by Pentaammineosmium(II)

Journal of the American Chemical Society ◽

10.1021/ja020279e ◽

2002 ◽

Vol 124 (44) ◽

pp. 13080-13087 ◽

Cited By ~ 8

Author(s):

Fei Ding ◽

Michael E. Kopach ◽

Michal Sabat ◽

W. Dean Harman

Keyword(s):

Addition Reactions ◽

Alkylated Benzenes

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Identification of C2C4 alkylated benzenes in flash pyrolysates of kerogens, coals and asphaltenes

Journal of Chromatography A ◽

10.1016/0021-9673(92)87027-6 ◽

1992 ◽

Vol 606 (2) ◽

pp. 211-220 ◽

Cited By ~ 59

Author(s):

W.A. Hartgers ◽

J.S. Sinninghe Damsté ◽

J.W. de Leeuw

Keyword(s):

Alkylated Benzenes

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Thermolysis of alkylated 2-cyclohexenones and related monoterpenoid ketones

Canadian Journal of Chemistry ◽

10.1139/v80-262 ◽

1980 ◽

Vol 58 (16) ◽

pp. 1639-1644 ◽

Cited By ~ 1

Author(s):

Gordon L. Lange ◽

Vincent A. Pereira ◽

Michael Weedle

Keyword(s):

Double Bond ◽

Alkylated Benzenes ◽

Bond Isomers

2-Cyclohexenone and three methylated cyclohexenones were thermolyzed at 400 °C for 20 hours to give conversions to products in the range 11 to 45%. When three monoterpenes containing the cyclohexenone moiety were thermolyzed under the same conditions the conversions were over 75%. The major products formed were alkylated benzenes, alkylated phenols, and double bond isomers of the starting enones. Mechanisms are proposed to account for these products.

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Protium–deuterium exchange of alkylated benzenes in dilute acid at elevated temperatures

Canadian Journal of Chemistry ◽

10.1139/v89-269 ◽

1989 ◽

Vol 67 (11) ◽

pp. 1744-1747 ◽

Cited By ~ 8

Author(s):

Nick Henry Werstiuk ◽

George Timmins

Keyword(s):

High Temperature ◽

Elevated Temperatures ◽

Deuterium Exchange ◽

Methyl Groups ◽

Dilute Acid ◽

Alkyl Groups ◽

Lower Reactivity ◽

Acid Catalyzed ◽

Alkylated Benzenes

Benzene (1), toluene (2), o-xylene (3), m-xylene (4), p-xylene (5), 1,2,3-trimethylbenzene (6), 1,2,4-trimethylbenzene (7), 1,3,5-trimethylbenzene (8), 1,2,3,4-tetramethylbenzene (9), 1,2,3,5-tetramethylbenzene (10), 1,2,4,5-tetramethylbenzene (11), pentamethylbenzene (12), hexamethylbenzene (13), hexaethylbenzene (14), ethylbenzene (15), and tetralin (16) have been labelled with deuterium by the high temperature – dilute acid (HTDA) method. In dilute DCl/D2O (0.14–0.27 M) at temperatures of 250–285 °C, the ring hydrogens of these compounds equilibrate with the deuterium pool. At temperatures above 250 °C the methyl groups of 3, 4, 5, 6 and 11 undergo slow H/D exchange; the methyl groups of 8, 9, 10, and 13 undergo exchange much more readily and hexamethylbenzene (13) can be readily perlabelled. Hexamethylbenzene exhibits a lower reactivity than 13 at the benzylic sites. Keywords: deuterium, exchange, alkyl groups, benzenes, acid-catalyzed.

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