Synthesis and Structures of [2.<i>n</i>]metacyclophane-1,2-diones

Abstract

McMurry cyclisation of 1, n-bis(5-formyl-2-methoxyphenyl)alkanes afforded dimethoxy[2. n]metacyclophan-1-enes and dimethoxy[2. n]metacyclophane-1,2-diols, in which latter one was converted to dimethoxy[2. n]metacyclophane-1,2-diones by Albright–Goldman oxidation.