Stereoselective DABCO-catalyzed synthesis of (E)-alpha-ethynyl-alpha,beta-unsaturated esters from allenyl acetates.
(E)-alpha-ethynyl-alpha,beta-unsaturated esters were exclusively prepared in good to excellent yields from treatment of allenyl acetates with 10 mol % DABCO in DMF at room temperature.
Choe
Yongsik
Y
National Research Laboratory for Catalytic Organic Reaction, Department of Chemistry, and Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon 200-701, Republic of Korea.
Lee
Phil Ho
PH