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Aromatisation in adducts of a-terpinene: Influence of hindered internal RotationsKaya, Afşin AhmetŞengül, Mehmet EminMenzek, AbdullahKayaardi, IbrahimKarakuş, MuratŞahin, ErtanAromatisationInternal rotationTerpenoidα-terpineneEach adduct of α-terpinene with p-quinone and 1,4-naphthoquinone in Ac2O/Et3N at 180 °C gives two aromatic products, one of which had a distinctive smell formed by the loss of an ethylene group. Here, we report the crystal structure of (1RS, 4RS)-1-isopropyl-4-methyl-1,4-dihydro- 1,4-ethanoanthracene-9,10-diyl diacetate. It is crystallised in an orthorhombic space group, Pbca, with cell dimensions a = 10.2899(7), b = 19.7804(9), c = 19.7519(8) Å and Z = 8. According to its NMR and X-ray diffraction data, the isopropyl and acetate groups slowly rotate.Science Reviews 2000 Ltd2011Articlehttps://rdlopen.rawdatalibrary.net/r/gumushane/13146https://doi.org/10.3184/174751911x131558906491110308-2342enJournal of Chemical Researchinfo:eu-repo/semantics/closedAccessinfo:eu-repo/semantics/articlehttps://gumushane-rdlopen.rawdatalibrary.net/tr/items/gumushane/13146