Synthesis of optically active dihydropyrans from asymmetric [4 + 2] cycloaddition of β,γ-unsaturated α-ketoesters with allenic esters

Cheng-Kui Pei, Yu Jiang, Min Shi
  • Organic & Biomolecular Chemistry, January 2012, Royal Society of Chemistry
  • DOI: 10.1039/c2ob25475a