Pyrrolidine-Catalyzed Reactions between α,β-Unsaturated Carbonyl Compounds and Cyclopentadiene: A Convenient Approach to 1,2- and 1,5-Dihydropentalenes

Article abstract of DOI:10.1021/jo00282a004

The reaction between cyclopentadiene and α,β-unsaturated carbonyl compounds in the presence of pyrrolidine gives rise to five different reaction pathways depending on the structure of the starting materials.For phenyl-substituted enones a high-yield one-p