Вид документа : Статья из журнала Шифр издания : 54/S 98 Автор(ы) : Korotaev V.Yu., Barkov A. Yu., Matochkina E. G., Kodess M. I., Sosnovskikh V. Ya. Заглавие : Synthesis of chromeno[3,4-c][1,2]oxazine-N-oxides via formal [4+2] cycloaddition of 3-nitro-2-trihalomethyl-2H-chromenes with cyclohexanone and pinacolone enamines [Электронный ресурс] Место публикации : Tetrahedron. - 2014. - Vol.70, №34. - С. 5161-5167 Примечания : Bibliogr. : p. 5166-5167 (42 ref.). - 13.08.2014 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): 2,3,4-trisubstituted chromanes--3-nitro-2-trihalomethyl-2h-chromenes--cyclic nitronates Аннотация: 3-Nitro-2-trichloro(trifluoro)methyl-2H-chromenes undergo a formal [4+2] cycloaddition reaction to cyclohexanone and pinacolone enamines, producing chromeno[3,4-c][1,2]benzoxazin-6-oxides with high diastereoselectivity and in good yields. In addition, some novel 2,3,4-trisubstituted chromanes were obtained. The stereochemistry of the products was established based on a 2D NOESY experiment and an X-ray diffraction study Доп.точки доступа: Korotaev, V.Yu.; Barkov, A. Yu.; Matochkina, E. G.; Kodess, M. I.; Кодесс Михаил Исаакович; Sosnovskikh, V. Ya.