Copper‐Catalyzed Formal [2+2+1] Heteroannulation of Alkenes, Alkylnitriles, and Water: Method Development and Application to a Total Synthesis of (±)‐Sacidumlignan D
作者:Tu M. Ha、Claire Chatalova‐Sazepin、Qian Wang、Jieping Zhu
DOI:10.1002/anie.201604528
日期:2016.8
A copper‐catalyzed three‐component reaction of alkenes, alkylnitriles, and water affords γ‐butyrolactones in good yields. The domino process involves an unprecedented hydroxy‐cyanoalkylation of alkenes and subsequent lactonization with the creation of three chemical bonds and a quaternary carbon center. The synthetic potential of this novel [2+2+1] heteroannulation reaction was illustrated by a concise
铜,烯烃,烷基腈和水的三组分反应可提供高收率的γ-丁内酯。多米诺骨牌过程涉及到烯烃前所未有的羟基氰基烷基化反应,以及随后的内酯化反应,产生了三个化学键和一个季碳中心。(±)-sacidumlignan D的简明全合成说明了这种新颖的[2 + 2 + 1]杂环化反应的合成潜力。