Claveau, Romain et al. published their research in Chemical Communications (Cambridge, United Kingdom) in 2018 |CAS: 29704-38-9

The Article related to butyrolactone enantioselective preparation, bisarylsuccinic anhydride preparation arylaldehyde dynamic kinetic resolution organocatalyst, Heterocyclic Compounds (One Hetero Atom): Pyrroles and Pyrrolizines and other aspects.SDS of cas: 29704-38-9

Claveau, Romain; Twamley, Brendan; Connon, Stephen J. published an article in 2018, the title of the article was Dynamic kinetic resolution of bis-aryl succinic anhydrides: enantioselective synthesis of densely functionalised γ-butyrolactones.SDS of cas: 29704-38-9 And the article contains the following content:

The efficient Dynamic Kinetic Resolution (DKR) of disubstituted anhydrides has been shown to be possible for the first time. Using an ad hoc designed organocatalyst and an enantio- and diastereoselective cycloaddition process with aldehydes, stereochem. complex γ-butyrolactone derivatives can be obtained – with control over three contiguous stereocentres, one of which is all carbon quaternary. The experimental process involved the reaction of tert-Butyl 2-(4-nitrophenyl)acetate(cas: 29704-38-9).SDS of cas: 29704-38-9

The Article related to butyrolactone enantioselective preparation, bisarylsuccinic anhydride preparation arylaldehyde dynamic kinetic resolution organocatalyst, Heterocyclic Compounds (One Hetero Atom): Pyrroles and Pyrrolizines and other aspects.SDS of cas: 29704-38-9

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics