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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Journal ArticleDOI
TiIV-BINOLate-Catalyzed Highly Enantioselective Additions of β-Substituted Allylstannanes to Aldehydes
Stefan Weigand,Reinhard Brückner +1 more
Journal ArticleDOI
Quararibea Metabolites. 4.1 Total Synthesis and Conformational Studies of (±)-Funebrine and (±)-Funebral
Ying Dong,Niranjan N. Pai,Sheri L. Ablaza,Shao-Xia Yu,Simon Bolvig,and David A. Forsyth,Philip W. Le Quesne +6 more
TL;DR: In synthetic studies, a new variation of the Paal-Knorr condensation employing titanium isopropoxide was utilized to construct the pyrrole lactone moiety and molecular mechanics (MMX) and a (1)H-(1)h NOE study indicate a distinct preferred conformation for (+/-)-funebrine.
Journal ArticleDOI
Synthese von 4,4‐disubstituierten 1,3‐Thiazol‐5(4H)‐thionen
TL;DR: In this article, an easy synthesis of 1,3-thiazol-5(4H)-thiones 5, a class of heterocycles which have hitherto only been available with difficulty, is described.
Journal ArticleDOI
Fluorescence detection of alkylphosphonic acids using p-(9-anthroyloxy)phenacyl bromide
Journal ArticleDOI
First friedel-crafts diacylation of a phenanthrene as the basis for an efficient synthesis of nonracemic
Kamil Paruch,Thomas J. Katz,Christopher D. Incarvito,Kin-Chung Lam,Brian Rhatigan,Arnold L. Rheingold +5 more
TL;DR: These are the first examples of Friedel-Crafts reactions used to prepare 3,6-diacylphenanthrenes and it is demonstrated that the camphanates' lactone functions point away from the ring system when the helicene has the (P) configuration and toward it when the helical configuration has the(M) configuration.