Další formáty:
BibTeX
LaTeX
RIS
@inproceedings{570883, author = {Melša, Petr and Mazal, Ctibor}, booktitle = {XXII. European Colloquium on Heterocyclic Chemistry, Book of Abstracts}, keywords = {1;3-dipolar cycloadditions; methylidene lactones; CH/pi interactions}, language = {eng}, pages = {143-143}, title = {Effect of CH/pi interaction on exo/endo selectivity in 1,3 dipolar cycloadditions.}, year = {2004} }
TY - JOUR ID - 570883 AU - Melša, Petr - Mazal, Ctibor PY - 2004 TI - Effect of CH/pi interaction on exo/endo selectivity in 1,3 dipolar cycloadditions. KW - 1;3-dipolar cycloadditions KW - methylidene lactones KW - CH/pi interactions N2 - In order to prove our assumption about the role of CH/pi interaction in preferential formation of exo-isomers, we varied proton affinity of the aromatic ring of 1,3-dipolar nitril ylide reagent introducing para-substituents. Indeed the reactions of 1a with such substituted nitrile ylides yielding mixtures of diastereomers exo-2 and endo-2 showed that the amounts of endo-adducts increased with increasing electron withdrawing character of the substituents Z. ER -
MELŠA, Petr a Ctibor MAZAL. Effect of CH/pi interaction on exo/endo selectivity in 1,3 dipolar cycloadditions. In \textit{XXII. European Colloquium on Heterocyclic Chemistry, Book of Abstracts}. 2004, s.~143-143.
|