Phillip M Flanders, M.Eng.
- Position:
Graduate Student - Ph.D.
Geography and Environmental Engineering
Johns Hopkins University (Baltimore, MD)
- Advisors:
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Degrees:
Ph.D. (in progress), Environmental Engineering and Chemistry, Johns Hopkins University (Baltimore, MD)M.Eng., Environmental Engineering, Johns Hopkins University (Baltimore, MD)B.S., Chemical Engineering and Chemistry, Rose-Hulman Institute of Technology (Terre Haute, IN)
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Past Advisors:
Penney L. Miller (as Undergraduate Student)Timm Strathmann (as Visiting Student)
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Research:
Nitrogen and Oxygen donor nucleophilic addition to Mn(III,IV)(hydr)oxide oxidized activated dihydroxybenzenes under environmental conditions.
Benzoquinones stable in water such as p-benzoquinone and juglone are sufficiently electrophilic to form Michael-Type adducts with strong, sulfur-donor nucleophiles (e.g. bisulfide ion) but not with environmentally-relevant oxygen- and nitrogen-donor nucleophiles. In our work, dihydroxybenzenes bearing electron-withdrawing acetyl and carboxylic acid groups are oxidized by manganese(III,IV) (hydr)oxides typical of those found at oxic/anoxic interfaces into novel benzoquinones. The novel benzoquinones form adducts with OH-/H2O, anilines, imidazoles, and phenols on timescales of minutes, rather than hours. Mono- and di-adduct products have been confirmed using LC-ESI-MS. Reactions of this kind may contribute to the incorporation of oxygen- and nitrogen-containing chemicals, both natural and synthetic, into natural organic matter
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Phillip Flanders's Publications (1)
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