Base-catalysed Alkylation of 2,7-Naphthalenediol with Glyoxal. Isolation of Structurally Intriguing Products and their Stereochemistry
Abstract
1,8-(2,5-Dihydroxy-1,4-dioxane-3,6-diyl)naphthalene-2,7-diol and 1,2,9,10-tetrahydronaphtho[2,1-b:7,8-b′]difuran-1,2,9,10-tetrol are prepared by reaction of 2,7-naphthalenediol with glyoxal, and their stereochemistry investigated mainly by NMR spectroscopy.