ethyl chloroformate (ECF)/NaBH3CN to 2‐[β‐(N‐ethoxycarbonyl‐N‐methyl)aminoethyl]‐4,5‐dimethoxytoluene (4) via the quaternary urethane 2. The same procedure leads from laudanosine (5) to the dibenzyl derivative 9. The reaction with ECF/NaBH3CN followed by LiAlH4 reduction is a versatile approach to Emde degradation products avoiding strongly basic conditions and elevated temperature. Cleavage reactions
Constituents of Papaver bracteatum: O-methyl-α-thebaol and 10-n-nonacosanol. Lanthanide-induced chemical shifts in 1H NMR and 13C NMR
作者:Hubert G. Theuns、Richard H.A.M. Janssen、Hubertus W.A. Biessels、Cornelis A. Salemink
DOI:10.1016/s0031-9422(00)80828-6
日期:1985.1
O-Methyl-α-thebaol is a new natural compound. The presence of isothebaine is confirmed. Lanthanide-induced chemical shifts can be used for the assignments of the 13C NMR chemical shifts of isothebaine and phenanthrenes. The use of lanthanide-induced chemical shifts in the identification of methoxyl resonances in 1H NMR is discussed.
Bei der Öffnung des Piperidinringes im Thebain mit Acetyl- und Benzoylchlorid sowie Chlorameisensäure-äthyl-und -benzylester in feuchtem Äthylacetat entstehen die entsprechen-den Codeinon-acyl-normethine (1a–1d), die je nach Katalyse interessante Umlagerungs-und Spaltungsreaktionen eingehen. Durch Umsetzung von Thebain mit Benzoylchlorid in absol. Benzol unter Erhitzen erhält man Δ5.7.9(14)-N-Benzoyl-des-thebain
乙The和苯甲酰氯在氯丁菊酯中的氯代苯甲酸酯和苄基氯的溶剂中,乙炔乙酸酯中的戊烯酮-乙酰基-甲氰菊酯(1a – 1d)与乌拉圭尼古丁被联用。杜邦(Durch Umsetzung von Thebain)的绝对溶剂中有苯甲酰氯。Erhitzenerhältman的苯△ 5.7.9(14)-N-苯甲酰基-德-蒂巴因(10)。在6-甲氧基-O-甲基-甲基苯酚(11)中,由德国化学家(Abdunsten desLösungsmittelsöligerhaltene Substanz铰链zerfällt )制成。
Determination of neutral manufacturing impurities in heroin by capillary gas chromatography with electron capture detection after reduction with lithium aluminum hydride and derivatization with heptafluorobutyric anhydride
作者:James M. Moore、Andrew C. Allen、Donald A. Cooper
DOI:10.1021/ac00297a005
日期:1986.5.1
Determination of manufacturing impurities in heroin by capillary gas chromatography with electron capture detection after derivatization with heptafluorobutyric anhydride
作者:James M. Moore、Andrew C. Allen、Donald A. Cooper