T. M. Luong's research while affiliated with Temple University and other places
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Publications (2)
The NMR spectra of approximately twenty highly purified organic peroxides (hydroperoxides, peroxy acids, dialkyl peroxides, t-butyl peroxyesters, and diacyl peroxides) and selected nonperoxidic analogs have been determined. The signal of the hydroperoxy proton is considerably downfield from that of the hydroxyl proton, and its position is also conc...
The direct preparation ofthreo-1,2-glycols without isolation of intermediates from oleic acid, methyl oleate, and oleyl alcohol by oxidation with a hydrogen
peroxide (70%)-tungstic acid system at pH 0–1 and 45–55C without solvent has now been shown to be an efficient, high-yield
reaction. Thethreo-isomers are formed from intermediate epoxides by in...
Citations
... In the 1 H NMR spectra of hydroperoxides, the hydroxy proton chemical shift is frequently observed between d H 7.1 and 8.2; a signal at d H 7.30 in the 1 H NMR spectrum of arenaran C (3) therefore supported the hydroperoxide functionality. [32][33][34][35] The NOESY correlation between Me-12 and H-6 placed the methyl group on the same face of the oxocene ring as H-6 ( Fig. 4a). Subsequently, X-ray crystallographic analysis of a sample that crystallized from 10 % EtOAc/hexanes confirmed the relative configuration determined from NOESY data, and further revealed a 3S,6S,7S configuration (Fig. 4b). ...
... Another interesting oxidant is hydrogen peroxide since the only by-product formed during the H 2 O 2 based oxidation reaction is water. In the literature, the hydroxylation of unsaturated fatty acids using H 2 O 2 as oxidant was generally performed using tungsten catalytic systems based for examples on tungstic, phosphotungstic or pertungstic acids [13][14][15]. The main drawbacks of these approaches were the need for high concentrations of hydrogen peroxide (up to 70 %) and the use of a phase transfer agent. ...
