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Gas-liquid chromatographic method for the determination of peracids in the presence of a large excess of hydrogen peroxide
The oxidation of organic sulphides is very fast with peracids and very slow with hydrogen peroxide. Thus, addition of an excess of methyl p-tolyl sulphide to a mixture of an organic peracid and…
A general procedure for the fluorodenitration of aromatic substrates
Isoponcimarin: New coumarin from Poncirus trifoliata☆
Poncimarin, a New Coumarin from Poncirus trifoliata L.
- A. Guiotto, P. Rodighiero, U. Quintily
- ChemistryZeitschrift fur Naturforschung. Section C…
- 1 June 1975
A new coumarinic derivative was isolated from unripe fruits of Poncirus trifoliata L.
Reduction of nitroarenes to anilines in basic alcoholic media
Substituted nitrobenzenes are reduced by alkoxide ions in alcohols to the corresponding azoxy and aniline derivatives. The reaction leading to anilines has been investigated in detail. Two different…
Novel route to racemization of sulfoxides
ANION ACTIVATION IN THE SYNTHESIS OF ETHERS FROM OXYGEN ANIONS AND P-CHLORONITROBENZENE
Reaction du (chloro-1 nitro-4) benzene(I) avec le propanolate-2 dans le propanol-2 et dans un systeme a 2 phases propanol-2/potasse. Effet du bromure de tetrabutyl ammonium sur la reaction de (I)…
Cleavage of the 1,3-Dithiane Protective Group
Die Spaltung von 1,3-Dithianen (I) zu Carbonylverbindungen (II) gelingt oxidativ mit uberschussigem Dimethylsulfoxid und Salzsaure in Dioxan in guten Ausbeuten.
A novel method of measuring the protonation of sulphoxides
The amplitude of the shorter wavelength dichroic extremum of optically active phenyl alkyl sulphoxides depends on the degree of protonation of the SO group and may be used to evaluate their pKa.
The reaction of anils with conjugated dienes
2-(4-Chlorophenylimino)-1-phenylethanone (1) or its adducts with alcohols (2) react with butadiene, cyclopentadiene, cyclohexa-1,3-diene, or cycloheptatriene under BF3 catalysis to give the…