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Showing 1 to 3 of 3 for “"Lead tetraacetate"”.
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Synthesis of Labeled 3-Hydroxyproline and Biosynthesis of the Dehydroproline Moiety of Virginiamycin M₁
… of 1,2-dehydroproline methyl ester using lead tetraacetate. Reduction of the imine with sodium borohydride gave predominately (R,S)-[caboxyl-¹⁴C]-cis-3-acetoxyproline which was hydrolyzed with hydrochloric acid and purified by ion-exchange chromatography and recrystallization. In order to …
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ΜΕΛΕΤΗ ΟΞΕΙΔΩΣΗΣ ΟΞΙΜΙΝΙΚΩΝ ΚΑΙ ΙΜΙΝΙΚΩΝ ΠΑΡΑΓΩΓΩΝ ΚΑΡΒΟΝΥΛΙΚΩΝ ΕΝΩΣΕΩΝ
THE REACTION OF ALIPHATIC 1,3-DIOXIMES WITH LEAD TETRAACETATE (LTA) RESULTED MAINLY IN PYRAZOLE- AND PYRAZOLINE - 1,2-DIOXIDES. THE EXACT TYPE OF THE N-OXIDE FORMED, DEPENDS ON THE SUBSTITUENTS ON THE 2-POSITION OF THE DIOXIME. FURTHERMORE, INFLUENCE IS ALSO EXERCISED BY ALKYL OR ARYL GROUPS …
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Synthetic studies utilizing podocarpic acid
… acid (2) with lead tetraacetate. This reaction has been investigated, and a mechanism accounting for the formation of nondecarboxylation products is proposed. The unsaturated ketoester (102) was prepared in low yield via the saturated C12 ketone (24), obtained …