Abstract
Multiple multicomponent macrocyclizations including bifunctional buildings blocks (MiBs) so far have relied almost exclusively on Ugi reactions. The efficient expansion to non-Ugi-MiBs is exemplified by the synthesis of tetra-beta-lactam and bis-alpha-acyloxy carboxamide macrocycles based on multiple Staudinger and Passerini three-component reactions (3CR), respectively. A recent variation of the Passerini-3CR that involves primary alcohols, isocyanides, and carboxylic acids under oxidative conditions is successfully adapted to this procedure.
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