Abstract
Intramolecular haloetherification and transannular hydroxycyclization of alkenes is a synthetic methodology to obtain polycyclic ethers and amines in a regio- and stereoselective manner. The stereoelectronic effects controlling this selectivity are discussed. Also, the methodology based on [4+3]-cycloaddition followed by intramolecular haloetherification or transannular hydroxycyclization is described as a very useful tool to prepare the dioxa- and oxazatricyclic cores of several bioactive natural products, whose molecular scaffold is quite difficult to reach by other synthetic approaches.
Keywords: Intramolecular haloetherification, transannular hydroxycyclization, alkenes, synthetic methodology, Polycyclic Ethers, natural products
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