Chiral ionic liquids (CILs)have played pivotal role in asymmetric catalysis to improve ee or de. Here either cation or anion or both may contain the chiral center to achieve the product in high ee or de. While recycling of these CILs, some impurities may trap in CILs or chiral ions may get racemise. It can result the loss of selectivity in recycled CILs.
If you have experienced this problem, please suggest me how to over come this.
Did you checked the optical rotation of your CIL before and after your reaction? This is the way to check if some racemization is indeed happens.
Hi, actually the chance of getting racemization of CILs after reaction mass is quite less, unless you are not using any harsh reaction conditions.
S, but there may b d chance of trapped impurities (say, your unreacted substrates, products, etc.) due to which the selectivity may decrease.
To overcome it, you have to do the post reaction work up carefully to avoid the loss of activity of your CIL.
Best wishes....
- Badges
- Science topic
- Similar topics
- Engineering
- Materials Engineering