7492-90-2Relevant academic research and scientific papers
Selective Aliphatic C-H Oxidation
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Page/Page column 15, (2011/02/18)
A composition including a complex of a metal, a tetradentate ligand, at least one ancillary ligand, and a counterion may be used for selective sp3 C—H bond oxidation. The tetradentate ligand may include a N-heterocyclic-N,N′-bis(pyridyl)-ethane-1,2-diamine group or a N,N′-bis(heterocyclic)-N,N′-bis(pyridyl)-ethane-1,2-diamine group. The composition can be used in combination with H2O2 to effect highly selective oxidations of unactivated sp3 C—H bonds over a broad range of substrates. The site of oxidation can be predicted, based on the electronic and/or steric environment of the C—H bond. In addition, the oxidation reaction does not require the presence of directing groups in the substrate.
Volatile lactones - (5S,S)-5-methyl-3-(methylalkyl)furan-2(5H)-ones - Identified in the submerged cultivation of Streptomyces avermitilis
Rezanka, Tomas,Sigler, Karel
, p. 4277 - 4284 (2007/10/03)
Six new compounds have been identified in the volatile fractions produced during the submerged cultivation of Streptomyces avermitilis. By recording the GC/MS, GC/FTIR, CD, 1H and 13C NMR data and by performing chemical degradation experiments, these compounds were determined to be (5S,S)-5-methyl-3-(methylalkyl)furan-2(5H)-ones. Herein, the existence of volatile lactones with an anteiso structure of the side-chain is thus documented for the first time. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
