Novel enantioselective syntheses of optically active (1R)-cis- and (1R)-trans-chrysanthemic acids.
摘要:
Dimethyl dimedone, a non chiral and cheap compound, has been converted to the optically actives 1-(R)-cis- and 1-(R)-trans-chrysanthemic acids possessing high economic value. These processes involve as the key steps (i) a cyclopropanation reaction (ii) a Grob fragmentation and (iii) a lipase monitored hydrolysis of a prochiral diacetate.
Novel enantioselective syntheses of optically active (1R)-cis- and (1R)-trans-chrysanthemic acids.
摘要:
Dimethyl dimedone, a non chiral and cheap compound, has been converted to the optically actives 1-(R)-cis- and 1-(R)-trans-chrysanthemic acids possessing high economic value. These processes involve as the key steps (i) a cyclopropanation reaction (ii) a Grob fragmentation and (iii) a lipase monitored hydrolysis of a prochiral diacetate.