216586-53-7Relevant academic research and scientific papers
Alternating chiral selectivity of aldol reactions under the confined space of mesoporous silica
Yeh, Chewei,Sun, Yan-Ru,Huang, Shing-Jong,Tsai, Yeun-Min,Cheng, Soofin
, p. 17116 - 17119 (2015)
The chiral selectivities were altered and high diastereo- and enantio-selectivities of the products were obtained in water medium without adding acid co-catalysts when a primary-tertiary diamine catalyst was immobilized on mesoporous SBA-15 to form a recyclable catalyst for the direct asymmetric aldol reaction of cyclohexanone with p-nitrobenzaldehyde.
Tetradentate nitrogen-oxygen symmetric ligand containing chiral cyclohexanediamine and preparation method and application of tetradentate nitrogen-oxygen symmetric ligand
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Paragraph 0035, (2018/10/11)
The invention discloses a tetradentate nitrogen-oxygen symmetric ligand containing chiral cyclohexanediamine and a preparation method and application of tetradentate nitrogen-oxygen symmetric ligand.The structure of the ligand is similar to that of a classic salen ligand, and the ligand can be coordinated with N, N, O and O and complex with alkyl aluminum to form complex. The ligand has the advantages that the ligand is special in structure and simple in preparation method, and the formed aluminum complex can be used as the catalyst of cyclic lactone ring opening polymerization reaction and is high in catalytic activity, good in stereoselectivity, fast in reaction and simple in polymerization reaction operation, capable of controllably obtaining products of different molecular weights, wide in selectivity and promising in market prospect.
