S 98 Synthesis of 2,3,4-Trisubstituted Chromans Via Nucleophilic Addition of N-, C-, and S-Nucleophiles to 3-Nitro-2-Trihalomethyl-2H-Chromenes. Stereochemical and Conformational Preferences [Text] / V. Yu. Korotaev, V. Ya. Sosnovskikh, I. B. Kutyashev, M. I. Kodess // Letters in Organic chemistry. - 2005. - Vol. 2, № 7. - P616-620 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: 2,3,4-Trisubstituted chromans synthesis via the nucleophilic addition of N-, C-, and S-nucleophiles to 3-nitro-2-trifluoro(trichloro)methyl-2H-chromenes have been developed. Stereochemical and conformational preferences of these compounds were studied |