The transfer of the cationic forms of tryptamine and serotonin across the nitrobenzene (NB)|water (W) interface was studied by cyclic voltammetry. Well-defined voltammetric waves were observed within the potential window. The standard potentials of the transfer were determined from the midpoint potentials of the voltammograms.The transfer of the cationic form of tryptophan across the NB|W interface was also observed using an acidic aqueous solution.

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Preparation of New Nitrogen-Bridged Heterocycles. Part 33. A New Preparative Method for Thieno(3,2-a)indolizines.-Treatment of (I) with tBu-OK causes ring opening and formation of 2-indolizinethiolates, which undergo alkylation to give the S-alkylated 1-vinylindolizines (III). 2-Acetonylthio-and 2-phenacylthio derivatives of these products undergo an intramolecular Michael addition to afford the thieno(3,2-a)indolizines (V) with elimination of a methylene compound. -(KAKEHI, A.; ITO, S.; UEDA, T.; TAKANO, S.; Chem.

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