摘要 : A procedure for recyclable asymmetric cyclization leading to optically active Wieland-Miescher ketone analogue has been developed employing D-phenylalanine and D-CSA in [hmim]PF6 and dimethylimidazolidinone in 81% chemical yield a... 展开 A procedure for recyclable asymmetric cyclization leading to optically active Wieland-Miescher ketone analogue has been developed employing D-phenylalanine and D-CSA in [hmim]PF6 and dimethylimidazolidinone in 81% chemical yield and 74% enantiomeric excess in average after five uses. A Hajos-Wiechert ketone analogue was also synthesized in a similar manner. 收起