Various synthetic approaches were employed to prepare 2‐benzyl‐2‐hydroxybenzofuran‐3(2H)‐one (8), the prototype of naturally occurring auronols. While the base‐induced ring transformation of 3‐hydroxyflavanone (2) as well as the hydration of 2‐benzylidenebenzofuran‐3(2H)‐one (=aurone; 6) proved to be inappropriate, the hydrogenolytic epoxide‐ring opening of 2′‐phenylspiro[benzofuran‐2(3H),2′‐oxiran]‐3‐one (7), obtained from 6, represents an efficient method to afford the auronol 8.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.