作者:Ángel M. Montaña、Juan A. Barcia
DOI:10.1016/j.tetlet.2005.10.021
日期:2005.12
A new synthetic methodology for 3-aminotropones is described. Tropones and 3-aminotroponic building blocks, present in a number of active natural products, Could be prepared by a two step synthetic pathway: a first step consisting in a [4+3] cyclo-addition reaction between a conveniently substituted alpha alpha'-dihaloketone and a furan derivative functionalized on C-2 by a protected amino group. The second step is based on a rearrangement of the cycloadduct, via the cleavage of the oxygen bridge, under basic conditions. (c) 2005 Elsevier Ltd. All rights reserved.