Synthesis of Novel Chiral Ionic Liquids Based on (−)-Menthyl Isonicotinate
摘要:
Thirteen novel chiral ionic liquids (CILs) containing the (-)-menthyl group can be easily prepared from isonicotinic acid with yields of 35-90%. The properties and characterization of these compounds were discussed and the alternation of optical rotation was analyzed.
A copper-catalyzed formal [1 + 2 + 2]-annulation of alkyne-tethered diazo compounds with pyridines, which affords polycyclic fused indolizines in synthetically useful to good yields under mild reaction conditions, has been reported. This method features the use of an inexpensive copper catalyst and readily available starting materials, broad substrate generality, and operational simplicity. Notably
Thirteen novel chiral ionic liquids (CILs) containing the (-)-menthyl group can be easily prepared from isonicotinic acid with yields of 35-90%. The properties and characterization of these compounds were discussed and the alternation of optical rotation was analyzed.