Studies in terpenoids. Part XLIV. Structure of the adduct from p-mentha-1,5-diene and β-naphthol, and its isomer
Abstract
The adduct formed from (–)-p-mentha-1,5-diene(α-phellandrene)(1) and β-naphthol is identified as 1-[(3R,4R)-p-menth-1-en-3-yl]-2-naphthol (18). It undergoes isomerisation by methanolic hydrogen chloride to afford (1S,2R,5S)-2,3,4,5-tetrahydro-2-isopropyl-5-methyl-1,5-methano-1H-naphth[2,1-b]oxocin (19).