A New Method for Recycling Asymmetric Catalysts via Formation of Charge Transfer Complexes was written by Chollet, Guillaume;Rodriguez, Fernand;Schulz, Emmanuelle. And the article was included in Organic Letters in 2006.Recommanded Product: 2043-21-2 This article mentions the following:
A new concept for recycling asym. bis(oxazoline)-type catalysts is reported. The formation of charge-transfer complexes between the chiral ligand and trinitrofluorenone and their subsequent precipitation and reuse by addition of new substrate solutions is described. The efficiency of this procedure is demonstrated in a Diels-Alder reaction of cyclopentadiene with N-acryloyl or N-crotonoyl oxazolidin-2-one to afford the expected endo products as major isomers (up to 97% de and 94% ee): the catalyst was used up to 12 times without loss of either activity or selectivity. In the experiment, the researchers used many compounds, for example, 3-Acryloyloxazolidin-2-one (cas: 2043-21-2Recommanded Product: 2043-21-2).
3-Acryloyloxazolidin-2-one (cas: 2043-21-2) belongs to oxazolidine derivatives. A common way to produce multisubstituted oxazolidines is by means of cycloaddition reactions. In another report, the incorporation of an additional substituted oxazolidine ring over a range of new biphenylazepinium salt organocatalysts for the asymmetric epoxidation of alkenes improved enantiocontrol over the parent structures.Recommanded Product: 2043-21-2
Referemce:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem