In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 497-25-6, name is Oxazolidin-2-one, introducing its new discovery. Safety of Oxazolidin-2-one
Studies on a total synthesis of plakotenin: Synthesis of optically active trans-hydrindanes by diastereoselective asymmetric intramolecular diels-alder reaction
Diastereoselective asymmetric intramolecular Diels-Alder reaction of 5,5-(trimethylenedithio)-2(E),7(E),9-decatrienoyl amides (13a-e) having various chiral auxiliaries was performed to give optically active trans- hydrindanes, which would be an important intermediate for a total synthesis of plakotenin (1), was described. In the several chiral auxiliaries, Saigo’s oxazolidinone was found to give trans-hydrindane (15a) in the highest stereoselectivity (96% e.e.), after conversion to benzyl ester.
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Reference：
Oxazolidine – Wikipedia,
Oxazolidine | C3H644NO – PubChem