20 research outputs found
Kinetics of the [4+2] cycloaddition of cyclopentadiene with (E)-2-aryl-1-cyano-1-nitroethenes
Full text linkAn experimental and theoretical study of the hetero Diels–Alder reactions between (E)-2-aryl-1-cyano-1-nitroethenes and ethyl vinyl ether: one-step or zwitterionic, two-step mechanism?
Get PDFChemInform Abstract: Syntheses in the Group of Nuphar Alkaloids. Part 7. An Easy Access to ( -)-Nupharamine.
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Synthesis in the group of nuphar alkaloids. VII. An easy access to (-)-nupharamine
No full textA simple and effective approach to the total synthesis of (-)-nupharamine (I) is presented, which allows to control the stereochemistry at C-3 by epimerization of the ethoxycarbonyl function. The key steps are reductive amination of the respective substituted 1,5-diketone V and enantiomer resolution of piperidine VI using (1S)-(-)-camphanic acid.</jats:p
ChemInform Abstract: A NEW APPROACH TO THE TOTAL SYNTHESIS OF (.+-.)-DEOXYNUPHARIDINE- STEREOSPECIFIC REDUCTION OF QUINOLIZINIUM SALTS
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ChemInform Abstract: SYNTHESES IN THE GROUP OF NUPHAR ALKALOIDS. IV. CRYSTAL STRUCTURE AND STEREOCHEMISTRY OF SYNTHETIC (.+-.)-3-EPINUPHARAMINE
Full text link(S)-(−)-α-Methylbenzylamine as an efficient chiral auxiliary in enantiodivergent synthesis of both enantiomers of N-acetylcalycotomine
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