Journal ArticleDOI
Rapid chromatographic technique for preparative separations with moderate resolution
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Abstract:
(11) Potassium ferricyanide has previously been used to convert w'c-1,2-dicarboxylate groups to double bonds. See, for example, L. F. Fieser and M. J. Haddadln, J. Am. Chem. Soc., 86, 2392 (1964). The oxidative dldecarboxylation of 1,2-dlcarboxyllc acids is, of course, a well-known process. See Inter alia (a) C. A. Grob, M. Ohta, and A. Weiss, Helv. Chim. Acta, 41, 1911 (1958); and (b) E. N. Cain, R. Vukov, and S. Masamune, J. Chem. Soc. D, 98 (1969).read more
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Phytotoxic metabolites of phoma sorghina, a new foliar pathogen of pokeweed
TL;DR: Phoma sorghina is a newly described leaf spot pathogen on pokeweed which produced six phytotoxins in liquid culture which were isolated and structurally identified as 6-methylsalicylic acid, epoxydon, desoxyepoxyd on, phyllostine, 2,3'-dihydroxy-4-methoxy-5',6-dimethyl diphenylether, and epoxymethylsalicylate ester.
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Asymmetric Synthesis of Homoallylic Amines and Functionalized Pyrrolidines via Direct Amino-Crotylation of In Situ Generated Imines
TL;DR: In double stereodifferentiating reactions with in situ generated imines, good levels of selectivity were achieved in the formation of secondary amines bearing syn–anti and syn–syn stereochemical triads.
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Synthesis of phosphatidyl-α-glucosyl glycerol containing a dioleoyl phosphatidyl moiety. Application of the tetraisopropyldisiloxane-1,3-diyl (tips) protecting group in sugar chemistry. part III
TL;DR: The synthesis of glycophospholipid 12c was accomplished by using the levulinoyl group for the temporary protection of the glucose hydroxyl functions of 6b and the tetraisopropyldisiloxane-1,3-diyl (TIPS) group to protect the 3'- and 4'-hydroxyl groups of 7c.
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Transition-Metal-Free Decarboxylative Photoredox Coupling of Carboxylic Acids and Alcohols with Aromatic Nitriles.
TL;DR: A transition-metal-free protocol for the redox-neutral light-induced decarboxylative coupling of carboxylic acids with (hetero)aromatic nitriles at ambient temperature is presented, and alcohols can be coupled in a similar fashion through their oxalate half esters.
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Aromatized arborane/fernane hydrocarbons as molecular indicators of floral changes in Upper Carboniferous/Lower Permian strata of the Saar-Nahe Basin, southwestern Germany
TL;DR: In this article, coal samples of Upper Carboniferous and Lower Permian age from three boreholes in the Saar-Nahe Basin, Germany, have been studied by organic geochemical and coal petrological methods.