Photoaddition reactions of 3-nitro-2-enopyranoside derivatives in 1,3-dioxolane
作者:Tohru Sakakibara、Aya Takaide、Akinori Seta
DOI:10.1016/0008-6215(92)84075-4
日期:1992.3
Abstract Irradiation of 3-nitro-2-enopyranosidederivatives having α- d -erythro, β- d -hreo, and α- d -threo configurations in 1,3-dioxolane afforded adducts in moderate yields. Structural assignment of the adducts, including conformational analyses of the 1,3-dioxolanyl moiety, were performed.
3-nitro-α- and β-D-erythro-hex-2-enopyranoside derivatives in methanol, ethanol, and isopropanol with high pressure Hg lamp gave the adducts in moderate yields. The stereoselectivities calculated by AM1 calculation by the use of model compounds with 1,3-dioxolan-2-yl radical are not conflict with those observed in similar photoreaction in 1,3-dioxolane as well as the present results