Synthetic Applications of the Nickel-Catalyzed Cyclization of Alkynes Combined with Addition Reactions in a Domino Process
作者:Muriel Durandetti、Lucie Hardou、Rudy Lhermet、Mathieu Rouen、Jacques Maddaluno
DOI:10.1002/chem.201100967
日期:2011.11.4
Carbonickelations of alkynes and functionalization of the resulting vinylnickel moiety have been performed efficiently in a nickel‐catalyzed domino cyclization–condensation process. This reaction, which does not require the preparation of any other organometallic reagent, proceeds only by exo‐dig cyclization. This convenient and mild method constitutes a one‐pot synthesis of substituted dihydrobenzofurans
炔烃的羰基化和所得乙烯基镍部分的官能化已在镍催化的多米诺环化-缩合过程中有效地进行。该反应不需要制备任何其他有机金属试剂,仅通过exo- dig环化即可进行。这种方便,温和的方法构成了取代的二氢苯并呋喃,苯并二氢吡喃,异苯并二氢吡喃,吲哚或茚满的单锅合成。这些有价值的产物通常以高收率和高立体选择性获得。它们被证明是有用的合成子,可用于快速进入功能化的多环骨架。