- Europium complex, ligand thereof and polypropylene luminescent material doped with europium complex
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The invention discloses a europium complex and a europium complex doped polypropylene luminescent material. The structures of the europium complex and a ligand of the europium complex are shown in formulas II and I. The preparation method of the long conj
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Paragraph 0039-0040
(2019/11/20)
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- Nucleophilic acylation of α-haloketones with aldehydes: An umpolung strategy for the synthesis of 1,3-diketones
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The first example of N-heterocyclic carbene (NHC)-promoted intermolecular acylation of α-haloketones with aldehydes and α,β-unsaturated aldehydes (enals) is reported. The protocol involves carbonyl umpolung reactivity of aldehydes and enals in which the carbonyl carbon attacks nucleophilically on electrophilic terminal of α-haloketones to afford 1,3-diketones and α,β-unsaturated 1,3-diketones, respectively. Short reaction time, ambient temperature, operational simplicity, and high yields are the salient features of the present procedure.
- Singh, Santosh,Singh, Pankaj,Rai, Vijai K.,Kapoor, Ritu,Yadav, Lal Dhar S.
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experimental part
p. 125 - 128
(2011/02/26)
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- NEW METHOD FOR PRODUCING α,β-UNSATURATED β-DIKETONES
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This paper proposes a new method for obtaining α,β-unsaturated acyclic β-diketones that differs from existing techniques in utilizing simple technology and giving high target product yields.
- Movchan, T. I.,Voloshanovskii, I. S.
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p. 1973 - 1976
(2007/10/02)
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- Pharmaceutical compositions containing 5-phenyl-1,3-dioxoalkenyl compounds
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This invention relates to pharmaceutical compositions containing a class of 5-phenyl-1,3-dioxoalkenyl compounds useful as inhibitors of leukotriene biosynthesis and thus useful in the treatment of conditions associated with leukotrienes. This invention al
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