Gold‐Catalyzed Double Cycloisomerization of 1‐Ene‐4,10‐diynyl Esters to Bicyclo[6.3.0]undeca‐2,4,9‐trienyl Esters
作者:Mitch Mathiew、Javey Khiapeng Tan、Philip Wai Hong Chan
DOI:10.1002/anie.201809376
日期:2018.10.22
trienyl esters efficiently from gold(I)‐catalyzed Rautenstrauch rearrangement/1,5‐hydride shift/8‐endo‐dig cyclization of 1‐ene‐4,10‐diynyl esters is described. The suggested double cycloisomerization mechanism delineates the first example of an unactivated all‐carbon tethered 1,7‐enyne, either preformed or formed in situ, which undergoes an 8‐endo‐dig cyclization pathway to give a cyclooctane motif
的合成方法来制备双环[6.3.0]十一碳2,4,9,三烯基酯有效地从金(I) -催化的重排Rautenstrauch / 1,5-氢化物转变/ 8-内切-挖的环化1-烯描述了4,10-二炔基酯。建议的双环异构化机制描述了未活化的全碳束缚的1,7-烯炔的第一个例子,该化合物是预先形成或原位形成的,它会经历8-内-挖-环化路径以产生环辛烷基序。它还提供了有机化学中极为罕见的合成方法,该方法可以一步一步地从无环前体组装双环基序的两个环组分。