Oxidative nucleophilic substitution of hydrogen in nitroarenes by silyl enol ethers
作者:Mieczysław Mąkosza、Marek Surowiec
DOI:10.1016/s0040-4020(03)01021-4
日期:2003.8
Enolates generated by treatment of silyl ketene acetals and enol ethers with fluoride ion sources add to nitroarenes to produce σH adducts that oxidize either with KMnO4 to give substitutednitroarenes or with dimethyldioxirane to give substituted phenols. In the latter case the oxidation results in replacement of the nitro group with a hydroxy group. It was shown that high effectiveness of these reactions
Synthesis and mass spectrometry of crufomate metabolites and related compounds
作者:V. J. Feil、J. E. Bakke、R. G. Zaylskie
DOI:10.1002/bms.1200030610
日期:1976.12
Phosphates and phosphoramidates related to 2-chloro-4-t-butylphenyl methyl methylphosphoramidate (crufomate) were synthesized to aid in the identification of crufomatemetabolites. Deuterium labeling metastable determinations and precise mass measurements were used to establish fragmentation pathways. Evidence was obtained for the rearrangement of an N-formyl phosphoramidate (the expected result of