Medium-Sized Cyclophanes, 63.¹ Synthesis and Structure of [2.2]Metacyclophane-1,2-Diol and Conversion Into [2.2]Metacyclophane-1,2-Dione by Swern Oxidation

Abstract

McMurry cyclisation of 1,2-bis(5- t-butyl-2-methyl-3-formylphenyl)ethane 2 afforded anti-[2.2]metacyclophan-1-ene 3 and anti-[2.2]metacyclophane-1,2-diols 4, which were converted into the corresponding 1,2-dione 6 by Swern oxidation.