4023-80-7Relevant articles and documents
Uncovering New Excited State Photochemical Reactivity by Altering the Course of the de Mayo Reaction
Kandappa, Sunil Kumar,Valloli, Lakshmy Kannadi,Jockusch, Steffen,Sivaguru, Jayaraman
supporting information, p. 3677 - 3681 (2021/04/07)
An unprecedented and previously unknown photochemical reactivity of 1,3-dicarbonyl compounds is observed with amino-alkenes leading to dihydropyrans. This novel photochemical reactivity changes the established paradigm related to the De Mayo reaction between 1,3-dicarbonyl compounds and alkenes. This new reaction allows convenient access to the Marmycin core in a single step from commercially available reactants. The origin and scope of this new photoreaction is detailed with preliminary photophysical and mechanistic investigations.
Multi-stimuli-responsive fluorescence of axially chiral 4-ene-β-Diketones
Wu, Dehua,Fang, Xinyi,Song, Jintong,Qu, Lang,Zhou, Xiangge,Xiang, Haifeng,Wang, Jun,Liu, Jin
, (2020/10/02)
A unique series of simple, smart, and chiral binaphthalene-substituted 4-ene-β-diketones molecules has been designed and prepared. Their optical properties, charge contribution, and transition process highly depend on their chemical structures. These π-conjugated materials are highly emissive in both solution and solid (emission quantum yield up to 68%), owing to the inhibition of enol-keto tautomerization and the effect of steric hindrance from binaphthalene. Through ethylenic bond hydrolysis, they can be used for not only cation/anion sensing but also chiral amino acids recognition. Moreover, at low concentrations, they have little cytotoxicity to living cells and can stain cytoplasm. Therefore, they afford a new platform in the design of multi-stimuli-responsive, smart, and chiral materials.
Pyrrolecarboxylic acid derivative synthesis method
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Paragraph 0108; 0110; 0115, (2019/11/04)
The invention discloses a pyrrolecarboxylic acid derivative synthesis method, which comprises: obtaining a group substituted formylacetone derivative by using a group substituted acetyl derivative andethyl acetate as raw materials; carrying out cyclization with diethyl aminomalonate hydrochloride to generate a pyrrolecarboxylic acid derivative ethyl ester; and carrying out a hydrolysis reaction to obtain the target product pyrrolecarboxylic acid derivative. According to the present invention, the method has characteristics of mild reaction conditions, simple purification, high yield and highproduct purity, and is suitable for process amplification and mass production.