S 83 Stereoselective hetero-Diels-Alder reaction of 3-(polyfluoroacyl)chromones with enol ethers. Novel synthesis of 2-R -containing nicotinic acid derivatives [Text] / V. Ya. Sosnovskikh, I. A. Khalymbadzha, R. A. Irgashev, P. A. Slepukhin // Tetrahedron. - 2008. - Vol. 64, № 44. - P10172-10180 : рис., табл. - Библиогр. : с. 10180 (15 назв.) Рубрики: ХИМИЧЕСКИЕ НАУКИ \\\\Expert2\\nbo\\Tetrahedron\\2008, v. 64, N44, p. 10172.pdf |