Diels-Alder Reactions for the Construction of Cyclopropylarenes (original) (raw)
2012, European Journal of Organic Chemistry
The straightforward synthesis of new bicyclopropyl-substituted alkynes and 1,3-dienes and their application in cobaltcatalyzed Diels-Alder reactions are described. The cycloaddition processes generated the desired bicyclopropyl-substituted arene derivatives in moderate to good yields, depending on the steric congestion of the reaction partners. The regioselectivity of the cycloaddition was controlled by the ligand coordinated to the cobalt center. The cyclopropyl moi-[ ‡] For one of us (A. de M.), this is considered to be Cyclopropyl Building Blocks for Organic Synthesis, 162.
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