Вид документа : Статья из журнала Шифр издания : 54/S 98 Автор(ы) : Pryadeina M. V., Burgart Ya. V., Saloutin V. I., Slepukhin P. A., Chupakhin O. N. Заглавие : Synthesis and structure of 2-ethoxy- and 2-aminomethylidene-3-fluoroalkyl-3-oxopropionates [Electronic resource] Место публикации : Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2007. - Vol. 43, № 7. - С. 945-955 Систем. требования: http://www.springerlink.com/content/bhr2j4557272u542/fulltext.pdf Примечания : 28.10.2011 г. ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Condensation of ethyl 3-polyfluoroalkyl-3-oxopropionates with excess triethyl orthoformate gave ethyl 3-polyfluoroalkyl-2-ethoxymethylidene-3-oxopropionates which reacted with primary aliphatic, aromatic, and heterocyclic amines to form ethyl 2-alkyl(aryl, hetaryl)aminomethylidene-3-polyfluoroalkyl-3-oxopropionates. According to the X-ray diffraction and IR data, the latter exist in the crystalline state as the corresponding E isomers, while in solution (NMR data), as mixtures of Z and E isomers. Condensation of ethyl 2-ethoxymethylidene-3-oxopropionates with secondary heterocyclic amines (morpholine and pyrrolidine) led to the formation of 2-morpholino(pyrrolidin-1-yl)methylidene-3-fluoroalkyl-3-oxopropionates which were shown to exist as Z isomers both in the crystalline state and in solution Держатели документа: Центральная научная библиотека УрО РАН Доп.точки доступа: Pryadeina, M. V.; Burgart, Ya. V.; Бургарт Янина Валерьевна; Saloutin, V. I.; Slepukhin, P. A.; Chupakhin, O. N.