Pd-Catalyzed [4+1] Annulation Strategy to Functionalized 4-Methyleneproline Derivatives
The Journal of Organic Chemistry(2024)
摘要
A Pd-catalyzed formal [4 + 1] cycloaddition reaction of sulfur ylides and in situ-generated Pd-stabilized zwitterions offers a convenient route to a series of functionalized proline derivatives. The utility of this method is demonstrated by a gram-scale synthesis and chemoselective functionalization of a proline-based derivative.
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