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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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Heterodimeric Bis(amino thiol) Complexes of Oxorhenium(V) That Mimic the Structure of Steroid Hormones. Synthesis and Stereochemical Issues.
TL;DR: 2D-NMR analysis indicates that the N-methyl and oxo substituents are driven into the steroidal anti configuration by the beta-orientation of the methyl group equivalent to C-18, which provides a remarkable structural and stereochemical mimic of a steroid.
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Identification of juvenile hormone III in the hemolymph of Blattella germanica adult females by gas chromatography‐mass spectrometry
TL;DR: In general, juvenile hormone III titers obtained correlated with data on oocyte growth and with hormone titers found from in vitro corpora allata incubations along the first gonotrophic cycle.
Journal ArticleDOI
The synthesis of 14-membered macrocyclic ethers
Dean S. Clyne,Larry Weiler +1 more
TL;DR: In this article, 14-membered macrocyclic ethers with a variety of methyl substitution patterns were synthesized, which involved either the Baeyer-Villiger ring expansion of a cyclic ketone or the macrolactonization of a hydroxy acid to give a lactone.
Journal ArticleDOI
Tetrahydrofuran synthesis via free radical mediated addition of functionalized alkenes to aryl vinyl oxiranes
TL;DR: In this paper, a tri-and tetrasubstituted tetrahydrofuran rings can be prepared by phenylthio radical mediated addition of functionalized alkenes across the carbon-carbon bond of aryl substituted vinyl oxiranes.
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Halo enol lactones: studies on the mechanism of inactivation of alpha-chymotrypsin.
TL;DR: This study has investigated in greater detail the process of chymotrypsin inactivation by an alpha-naphthyl-substituted five- and six-membered bromo enol lactone, and results are consistent with the mechanism-based inactivation process previously presented.