On May 25, 2020, Abdelkawy, Mahmoud A.; Aly, El-Saied A.; El-Badawi, Mahmoud A.; Itsuno, Shinichi published an article.Name: Methyl 2-cyclopentanonecarboxylate The title of the article was Synthesis of Cinchona Urea Polymers and Their Evaluation as Catalyst in the Asymmetric Reactions. And the article contained the following:
Chiral polyureas of cinchona alkaloids were synthesized via repetitive Mizoroki-Heck (MH) coupling reaction. The Pd-catalyzed polycondensation of cinchona urea dimers and 1,4-diiodobenzene afforded the chiral polyureas. The catalytic activity of the chiral polymers was subsequently investigated. The asym. Michael addition of ketoesters such as Me 2-oxocyclopentanecarboxylate, acetylacetone to nitroolefins (E)-ArCH=CHNO2 (Ar = Ph, 4-methylphenyl, 4-fluorophenyl, thiophen-2-yl) was successfully catalyzed by the polymeric organocatalysts to give the corresponding Michael adducts I and with 3-[(1S)-2-nitro-1-phenylethyl]pentane-2,4-dione high catalytic activities and excellent enantioselectivities (up to >99% ee). The polymeric catalysts were insoluble in commonly used organic solvents. They were easily recovered and reused several times without any loss of the catalytic activity. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Name: Methyl 2-cyclopentanonecarboxylate
The Article related to polyurea cinchona alkaloid preparation, cinchona urea dimer diiodobenzene mizoroki heck polycondensation palladium catalyst, ketoester nitroolefin asym michael addition polyurea cinchona alkaloid catalyst and other aspects.Name: Methyl 2-cyclopentanonecarboxylate
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