Formal [3+2]-Cycloaddition-Based Approach Using Ethoxymethylene Malonate Derivatives: Novel and Expedient Access to Functionalized N-Acyliminium Precursors
作者:Sébastien Comesse、Vincent Dalla、Adam Daïch、Moussa Saber、Morgane Sanselme、Pierre Netchitaïlo
DOI:10.1055/s-0030-1258530
日期:2010.9
Combination of a base, ethoxymethylene malonates, and α-bromoacetamides was used to reach structurally diverse α-alkoxy-γ-lactams via a direct aza-MIRC sequence in excellent yields. Subsequent acidic treatment allowed the formed pyrrolo [2,1-a]isoquinoline alkaloid core to be isolated in high yield.
利用碱、乙氧基亚甲基丙二酸盐和δ±-溴乙酰胺的组合,通过直接偶氮-MIRC 顺序制备出结构多样的δ±-烷氧基δ³-内酰胺,收率极高。随后的酸性处理使形成的吡咯并[2,1-a]异喹啉生物碱核心得以高产分离。