71672-71-4Relevant academic research and scientific papers
2-phenylselenic quinoline compound, and preparation method thereof
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Paragraph 0053; 0063; 0064-0066; 0067; 0072; 0077; 0082, (2019/01/06)
The invention relates to a 2-phenylselenic quinoline compound, and a preparation method thereof. According to the preparation method, in an organic solvent, a quinoline nitrogen oxide and iodobenzeneare taken as reaction raw materials, element selenium is
Efficient synthesis of unsymmetrical heteroaryl thioethers and chalcogenides by alkali hydroxide-mediated SNAr reactions of heteroaryl halides and dichalcogenides
Ma, Xiantao,Liu, Quan,Jia, Xiaojuan,Su, Chenliang,Xu, Qing
, p. 56930 - 56935 (2016/07/06)
An efficient alkali hydroxide-mediated SNAr reaction of heteroaryl halides has been developed for the practical synthesis of the useful unsymmetrical heteroaryl thioethers and chalcogenides. The usually odorless, easily available, lowly toxic, and easily stored and handled diorganyl dichalcogenides can be used as safer and convenient chalcogen nucleophile precursors and diverse unsymmetrical heteroaryl chalcogenides can be obtained in good to high yields by the method.
SRN1 reaction of haloarenes with benzenethiolate, benzeneselenolate, and benzenetellurolate ions promoted by Sml2
Zhang, Yongmin
, p. 539 - 541 (2007/10/03)
SRN1 reaction is of haloarenes with benzenethiolate, benzeneselenate, and benzenetellurolate ions can be carried out by use of samarium diiodide (SmI2) as a promoter in DMF-THF to afford the corresponding ArZPh compounds in moderate to good yields.
Relative Reactivities of Nucleophiles Derived from Group 6A toward Aryl Radicals
Pierini, Adriana B.,Penenory, Alicia B.,Rossi, Roberto A.
, p. 486 - 490 (2007/10/02)
Competition experiments have been carried out in liquid ammonia at reflux temperature to determine the relative rate constants for the coupling reactions of nucleophiles derived from group 6A of the periodic table toward aryl radicals.The nucleophiles studied were of type PhZ- (Z=S, Se, Te).It has been proposed that these nucleophiles react under photochemical stimulation with haloaromatic substrates through the SRN1 mechanism of aromatic substitution.The experimental results suggest that the coupling reaction aryl radical-PhZ- anion can be reversible or irreversible depending on the nature of the aryl moiety and the PhZ- nucleophile.Relative rate constants have been determined under conditions of irreversible coupling of the nucleophiles PhZ- (Z=S, Se, Te) with 2-quinolyl radicals.Results here reported indicate an increasing reactivity as we go down the group: PhO- (0.0), PhS- (1.00), PhSe- (5.8), PhTe- (28).The relative rate constant when one of the coupling reactions is reversible supports our mechanistic suggestions.
