Abstract: | Adducts of 2,5-dimethoxy-2,5-dihydrofuran with several dienes were obtained by the Diels-Alder reaction. The possibility of the participation of 2-methoxy-7-methyl-1,6-dioxaspiro-[4.4]-3-nonene as a dienophile in the diene synthesis was demonstrated for the first time. The structures of the adducts were confirmed by their IR spectra and catalytic hydrogenation.See [8] for Communication XLVI.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1591–1594, December, 1970. |