NUCLEOPHILIC SUBSTITUTION REACTION VIA ONE ELECTRON TRANSFER PROCESSES. II A NEW SYNTHETIC METHOD FOR THE PREPARATION OF α,β-UNSATURATED ESTERS AND KETONES
An efficient one-pot synthesis of α,β-unsaturated esters and ketones consisting of the coupling reaction of α-chloronitroalkanes with the anions of diethyl α-alkylmalonates or ethyl α-alkylacetoacetates followed by deethoxycarbonylation and concomitant elimination of the nitro group is described.
Kon; Narayanan, Journal of the Chemical Society, 1927, p. 1544
作者:Kon、Narayanan
DOI:——
日期:——
Bicyclic β-Hydroxytetrahydrofurans as Precursors of Medium Ring Keto-Lactones
作者:Helena M. C. Ferraz、Luiz S. Longo
DOI:10.1021/jo0626109
日期:2007.4.1
The reaction of a series of cis-fused bicyclic beta-hydroxytetrahydrofurans with ruthenium tetraoxide, generated in situ from ruthenium trichloride and sodium periodate, afforded 9- and 10-membered keto-lactones in moderate to good yields, in a clean and straightforward fashion. The starting beta-hydroxyethers were obtained from the corresponding 3-alkenols by two alternative procedures, depending on their pattern of substitution: (a) epoxidation by dimethyldioxirane, followed by base-catalyzed cyclization of the resulting epoxyalcohol, and (b) thallium trinitrate-mediated cyclization of the 3-alkenols, a method already described by our group.
ONO, NOBORU;TAMURA, RUI;ISAMI, HAMAMOTO;NAKATSUKA, TAMONI;HAJAMI, JUN-ICH+, J. ORG. CHEM., 1983, 48, N 21, 3678-3684