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1998 cyclohexane derivatives cyclohexane derivatives Q 0040 04 -075 Thioamino-Derivatives of Alkoxymethyl(vinyl)cyclohexanes as Corrosion Inhibitors. -A number of new homologous 2-alkoxymethyl-5vinylcyclohexanes (III) bearing a butylthioethylamino unit are prepared, which prove to be effective inhibitors of steel corrosion. -(GADZHIEV, M. M.; MAMEDOV, I. M.; ASADOVA, P. G.; Neftekhimiya 37 (1997) 4, 378-382; Bakinskii gos. univ. im. Rasulzade, Baku 370000, Azerbaijan; RU)

2001 cycloaddition reactions cycloaddition reactions O 0070 -043Diene Condensation of Polychlorocyclic Dienes with Dienophiles of Allylacetylene Series.-Cycloaddition of allylacetylenes (II) to polychlorocyclopentadienes (I) proceeds chemoselectively at the allyl double bond and with excellent diastereofacial selectivity to furnish the endo-propargyl adducts (III) in moderate to good yields. Some transformations of the adducts are studied. Reduction with Zn-Cu proceeds chemo-and stereoselectively to give E-allyl-substituted bicycloheptenes (VII). Favorsky decomposition of the tertiary alcohols in the side chain of compounds (III) can be selectively directed towards formation of the ethynyl [cf. (IV)] or allenyl group [cf. (V)]. -(VELIEV, M. G.; CHALOBIEVA, A. Z.; SHATIROVA, M. I.; MAMEDOV, E. SH.; MAMEDOV, I. M.; Russ.