Indirect N-vinylation of indoles via isomerisation of N-allyl derivatives: synthesis of (+/-)-debromoarborescidine B
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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.
Кључне речи:N-Vinylindoles / Isomerisation / Base / Debromoarborescidine B
Извор:Tetrahedron Letters, 2013, 54, 34, 4536-4539
- Pergamon-Elsevier Science Ltd, Oxford