A radical-based approach to hydroxytetralones from unprotected phenols
作者:Laurent Petit、Samir Z. Zard
DOI:10.1039/c0cc00680g
日期:——
Xanthates derived from unprotected 2-hydroxyacetophenones undergo smooth intermolecular addition to unactivated alkenes and subsequent cyclisation to give hydroxytetralones in good yield.
Practical, convergent routes to variously substituted 1- and 2-naphthylamides have been developed. They exploit the ability of xanthates to undergo both intermolecular radical additions to vinyl pivalate and intramolecular radical cyclisations to aromatic rings. In the case of 1-naphthylamides, the existence of an intramolecular hydrogen bond was used to facilitate the cyclisation step.