Base Mediated Cyclopentannulation of Ynones with Amino Crotonates for Regio- & Stereoselective Synthesis of Pentafulvenes and Cyclopenta[c]quinolines.

A regio- and stereoselective synthesis of unsymmetrically substituted pentafulvenes is reported via the condensation of readily available ynones and amino crotonates under very mild conditions. The...