Indirect N-vinylation of indoles via isomerisation of N-allyl derivatives: synthesis of (±)-debromoarborescidine B
作者:Gordana Tasic、Milena Simic、Stanimir Popovic、Suren Husinec、Veselin Maslak、Vladimir Savic
DOI:10.1016/j.tetlet.2013.06.069
日期:2013.8
Double bond migration in N-allylindoles has been investigated as a method to access N-vinyl derivatives of this heterocycle. The optimal reaction conditions employed t-BuOK or NaH in DMSO as the solvent at room temperature to afford the products in yields ranging from 51 to 99%. Although in some cases a high degree of stereoselectivity was observed, preferential formation of either the Z- or E-isomer was not predictable. The developed methodology was employed in the synthesis of (+/-)-debromoarborescidine B. (C) 2013 Elsevier Ltd. All rights reserved.