Min Chen, Zhi-Tang Huang and Qi-Yu Zheng
Org. Biomol. Chem., 2015,13, 8812-8816
DOI:
10.1039/C5OB01301A,
Communication
Highly enantioselective cyanation of β-keto esters using hypervalent iodine(III) as the electrophilic cyanating reagent induced by cinchona alkaloid-based chiral quaternary ammonium salt was demonstrated. Organic bases, especially DMAP, in the chiral phase-transfer catalysis were used to obtain high ees.