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A stereo- and regio-selective synthesis of rrans-2,5-dialkylpyrroiine structures is accomplished via the A-substituted allylic anion intermediates (Scheme 12). The a-regioselective alkylation is presumably due to the presence of the electron-withdrawing methoxycarbonyl group. The piperidine ring system... [Pg.62]

See other pages where Stereo- and regio-selective synthesis is mentioned: [Pg.337] [Pg.99]