Fast and efficient preparation of Baylis–Hillman-derived (E)-allylic azides and related compounds in aqueous medium
作者:Marcus M. Sá、Marcia D. Ramos、Luciano Fernandes
DOI:10.1016/j.tet.2006.09.059
日期:2006.12
A practical access to alkyl- and aryl-substituted (E)-2-(azidomethyl)alkenoates and related azido compounds from the corresponding allylic bromides in aqueous acetone is described. An alternative method to obtain the starting bromides based on heterogeneous catalysis under mild conditions was also investigated.
Simple access to 2-methylalk-2-enoates and insect pheromones by zinc-promoted reduction of Baylis–Hillman-derived allylic bromides
作者:Luciano Fernandes、Adailton J. Bortoluzzi、Marcus M. Sá
DOI:10.1016/j.tet.2004.08.018
日期:2004.10
(E)-2-Methylacrylates are prepared in good yield and high stereoselectivity by zinc-promoted reduction of 2-(bromomethyl) alkenoates derived from Baylis-Hillman adducts. Synthesis of the male ant pheromone (E)-2,4-dimethyl-2-hexenoic acid was performed using this simple methodology. (C) 2004 Elsevier Ltd. All rights reserved.