S 83 Stereoselective tandem [4 + 2]/[3 + 2] cycloaddition reactions of 3,3,3-trichloro(trifluoro)-1-nitropropenes and 2,3-dihydrofuran [Electronic resource] / V. Yu. Korotaev, V. Ya. Sosnovskikh, M. A. Barabanov, A. Yu. Barkov, M. I. Kodess // Mendeleev Communications. - 2010. - Vol. 20, № 1. - P17-19 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The first example of the domino hetero-Diels–Alder/1,3-dipolar cycloaddition, in which 3,3,3-trichloro(trifluoro)-1-nitropropenes act as both the heterodiene and the dipolarophile in the reaction with 2,3-dihydrofuran, is described. The trichloromethylated nitroolefin gave tricyclic nitroso acetal as a single regio- and stereoisomer, while the trifluoromethylated derivative afforded a 3:1 mixture of two regioisomeric cycloadducts \\\\Expert2\\nbo\\Mendeleev Communications\\2010, v.20, p.17.pdf |