DEGRADATION OF POLYCYCLIC AROMATIC HYDROCARBONS TO RENDER THEM AVAILABLE FOR BIODEGRADATION
申请人:Hong P.K. Andy
公开号:US20080242875A1
公开(公告)日:2008-10-02
A method for the degradation of polycyclic aromatic compounds is disclosed that involves dissolving ozone in a bipolar solvent comprising a non-polar solvent in which is of sufficiently non-polar character to solubilized the polycyclic aromatic compounds, and a polar-water-compatible solvent which is fully miscible with the non-polar solvent to form a single phase with the non-polar solvent. The bipolar solvent with dissolved ozone is contacted with the polycyclic aromatic compounds to solubilize the polycyclic aromatic compounds and react the dissolved polycyclic aromatic compounds with the ozone to degrade the dissolved polycyclic aromatic compounds to oxygenated intermediates. The bipolar solvent is then mixed with sufficient water to form separate non-polar and polar phases, the non-polar phase comprising the non-polar solvent and the polar phase comprising the non-polar solvent and the oxygenated intermediates. The polar phase is then diluted and incubated with bacteria to biodegrade the oxygenated intermediates.
Polycyclic Aromatic Compounds via Radical Cyclizations of Benzannulated Enyne-Allenes Derived from Ireland−Claisen Rearrangement
作者:Yonghong Yang、Jeffrey L. Petersen、Kung K. Wang
DOI:10.1021/jo035036z
日期:2003.10.1
after hydrolysis, the carboxylic acid 16 in 57% overall yield from 10 in a single operation. An intramolecular acylation reaction of 16 produced the ketone 17. The carboxylic acids 24-26 were likewise prepared from the diaryl ketones 18-20, respectively. However, the intramolecular [2 + 2] cycloaddition reaction of the benzannulated enyne-allene 33 having a tert-butyl group at the allenic terminus occurred
phenanthren-4-one (TNC) was synthesized by the nitration of the parent ketone. TNC formed charge-transfercomplexes with polycyclic aromatichydrocarbons (PAH). The property of TNC as an electron acceptor was compared with that of 2,4,7-trinitro-9H-fluoren-9-one (TNF). TNC was found to be a better complexing agent than TNF.
Acetylations of 2- and 3-methoxy-4H-cyclopenta[def]phenanthrene gave predominantly the 1- and 8-acetyl derivatives, respectively. The acetylation of the 1-methoxy compound afforded the 2-, 3-, 5-, 7-, and 8-yl ketones and the reaction of the 8-methoxy derivative yielded the 1- and 3-acetyl derivatives. Similar reactions of 1-, 2-, 3-, and 8-methoxy-4H-cyclopenta[def]phenanthren-4-one occurred mainly