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@inproceedings{566796, author = {Melša, Petr and Čajan, Michal and Mazal, Ctibor}, address = {Warsaw, Poland}, booktitle = {YoungChem 2004, Book of Abstracts}, keywords = {1;3-dipolar cycloaddition; methylene lactones}, language = {eng}, location = {Warsaw, Poland}, pages = {67-67}, publisher = {Warsaw University of Technology}, title = {Effect of CH/pi interaction on exo/endo selectivity in 1,3-dipolar cycloadditions}, url = {http://www.youngchem.com/book.pdf}, year = {2004} }
TY - JOUR ID - 566796 AU - Melša, Petr - Čajan, Michal - Mazal, Ctibor PY - 2004 TI - Effect of CH/pi interaction on exo/endo selectivity in 1,3-dipolar cycloadditions PB - Warsaw University of Technology CY - Warsaw, Poland KW - 1;3-dipolar cycloaddition KW - methylene lactones UR - http://www.youngchem.com/book.pdf 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, Michal ČAJAN and Ctibor MAZAL. Effect of CH/pi interaction on exo/endo selectivity in 1,3-dipolar cycloadditions. In \textit{YoungChem 2004, Book of Abstracts}. Warsaw, Poland: Warsaw University of Technology, 2004, p.~67-67.
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