Cinchona Alkaloid-Derived Zwitterions Catalyzed Enantioselective Steglich Rearrangement and Aldol Reaction of O-Acylated Oxindoles was written by Lam, Ying-Pong;Huang, Jingxian;Jiang, Xiaojian;Yeung, Ying-Yeung. And the article was included in ChemCatChem in 2022.Application of 102-09-0 The following contents are mentioned in the article:
A class of cinchona alkaloid-derived zwitterions was successfully applied to achieve highly enantioselective Steglich rearrangement. A series of O-acylated oxindoles afforded C-acylated oxindoles possessing a quaternary stereocenter. These products were obtained in high yields and with excellent enantioselectivity. The same catalytic protocol was also found to be applicable in the asym. aldol reaction of oxindoles. Studies were conducted to elucidate a clearer mechanism. These findings would advance the development of new reaction protocols that exploit cinchona alkaloid-derived zwitterions as asym. nucleophilic catalysts. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Application of 102-09-0).
Diphenyl carbonate (cas: 102-09-0) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Application of 102-09-0
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics