14545-01-8Relevant articles and documents
Coordination compound containing 1,10-phenanthroline-shaped N-heterocyclic carbene copper (I), and application thereof
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Paragraph 0014, (2018/07/30)
The invention discloses a coordination compound containing 1,10-phenanthroline-shaped N-heterocyclic carbene copper (I) (as well as a coordinate compound monocrystal), and application thereof. The coordination compound containing the 1,10-phenanthroline-s
Direct N-arylation of azaheterocycles with aryl halides under ligand-free condition
Yang, Qichao,Wang, Yufang,Zhang, Baoji,Zhang, Mingjie
, p. 2389 - 2393,5 (2020/09/16)
A simple and efficient Ci£N cross-coupling method of aryl halides with various heterocycles was reported, by using 10 mol% of CuI as catalyst and 1.2 equiv. NaH as base. Aryl iodides, aryl bromides and many substituted aryl chlorides could efficiently react with heterocycles, providing variety of N-arylated products in good to excellent yields. The ligand-free catalyst system was stable in air and could be readily reused. An efficient, convenient and applicable method was developed for the N-arylation of azaheterocycles catalyzed by CuI and NaH under ligand free condition. Copyright
REACTIVITY OF NUCLEOPHILES IN DIMETHYL SULFOXIDE AND ITS COMPARISON WITH NUCLEOPHILIC REACTIVITY IN PROTIC MEDIUM
Zima, Vitezslav,Pytela, Oldrich,Kavalek, Jaromir,Vecera, Miroslav
, p. 2715 - 2720 (2007/10/02)
Reactions of 2,4-dinitrophenyl acetate and 2,4-dinitrofluorobenzene as model substrates with 12 nucleophiles have been studied in dimethyl sulfoxide.The rate constants obtained have been discussed with regard to the nucleophilic reactivity differences in dimethyl sulfoxide and protic solvents inclusive of the different manifestations of the charge of nucleophiles.The applicability of an earlier-suggested correlation equation to the data obtained has been verified.The reaction medium markedly affects the reactivity of nucleophiles, the effect of charge being substantially greater in aprotic solvents (electrostatic interaction) than in protic ones (solvation).In spite of these differences the correlation with application of an empirical nucleophilicity scale suggested earlier is satisfactory, the regression coefficients obtained reflect changes in the nature of medium.