Enantioselective Three-Component Coupling of Heteroarenes, Cycloalkenes and Propargylic Acetates

Asymmetric coupling proceeds efficiently between propargylic acetates, cycloalkenes and electron-rich heteroarenes including indoles, pyrroles, activated furans and thiophenes. 2,3-Disubstituted tetrahydrofurans and pyrrolidines are produced in trans configuration and excellent enantiomeric ratios. The reaction proceeds via Wacker-type attack of nucleophilic heteroarenes on alkenes activated by allenyl Pd-II species.

Automated summary

Asymmetric coupling efficiently occurs between propargylic acetates, cycloalkenes, and electron-rich heteroarenes, yielding 2,3-disubstituted tetrahydrofurans and pyrrolidines in trans configuration with excellent enantiomeric ratios. The reaction proceeds via Wacker-type attack of nucleophilic heteroarenes on alkenes activated by allenyl Pd-II species.