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Gebhard Neyer - One of the best experts on this subject based on the ideXlab platform.
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a novel dieckmann type cyclization the final step of the synthesis of a Carbacephem Derivative
Synthesis, 1991Co-Authors: Gebhard NeyerAbstract:The treatment of the triacylamine, methyl 4-(dibenzoyl-aminocarbonylethyl)-2-oxoazetidine-1-acetate (2), with sodium bis(trimethylsilyl)amide leads to an unprecedented Dieckmann-type ring closure to form the anion of the Carbacephem Derivative, methyl 3-hydroxy-1-Carbacephem-4-carboxylate, (3)