652150-85-1Relevant articles and documents
Cinchona Alkaloid-Lewis Acid Catalyst Systems for Enantioselective Ketene-Aldehyde Cycloadditions
Zhu, Cheng,Shen, Xiaoqiang,Nelson, Scott G.
, p. 5352 - 5353 (2007/10/03)
Asymmetric cinchona alkaloid-catalyzed acid chloride-aldehyde cyclocondensation (AAC) reactions afford enantioenriched 4-substituted and 3,4-disubstituted β-lactones with near perfect absolute and relative stereocontrol. These reactions are characterized