Gold(I)-catalyzed double migration cascades toward (1E,3E)-dienes and naphthalenes
作者:Alexander S. Dudnik、Todd Schwier、Vladimir Gevorgyan
DOI:10.1016/j.tet.2008.10.109
日期:2009.2
A novel gold(I)-catalyzed cascade cycloisomerization of a variety of propargylic esters leading to unsymmetrically substituted naphthalenes has been developed. This domino process involves an unprecedented tandem sequence of 1,3- and 1,2-migrations of two substantially different migrating groups. It is believed that this transformation proceeds via formation of 1,3-diene intermediate or its equivalent
已开发出一种新颖的金(I)催化的各种炔丙基酯级联环异构化反应,可导致不对称取代的萘。这种多米诺骨牌过程涉及两个基本不同的迁移组的1,3-和1,2-迁移的前所未有的串联序列。据信,这种转化是通过形成1,3-二烯中间体或其等同物进行的,该中间体在碳环化和芳构化步骤后转化为萘骨架。此外,还证明了可以通过1,3-迁移-质子转移级联立体选择性地获得各种1,3-二烯。