Cross-conjugated trienamines are introduced as a new concept in asymmetric organocatalysis. These intermediates are applied in highly enantioselective Diels-Alder and addition reactions, providing functionalized bicyclo[2.2.2]octane compounds and gamma'-addition products, respectively. The nature of the transformations and the intermediates involved are investigated by computational calculations and NMR analysis.
A new and unexpected Rh(I)-catalyzedcycloisomerization of 1,6-enynes is reported. Several different alkyne substitution patterns were evaluated under the reaction conditions, including a deuterated derivative that provides some insight into the reaction mechanism.
Cross-conjugated trienamines are introduced as a new concept in asymmetric organocatalysis. These intermediates are applied in highly enantioselective Diels-Alder and addition reactions, providing functionalized bicyclo[2.2.2]octane compounds and gamma'-addition products, respectively. The nature of the transformations and the intermediates involved are investigated by computational calculations and NMR analysis.