- Synthesis of Aryl Hydrazines via CuI/BMPO Catalyzed Cross-Coupling of Aryl Halides with Hydrazine Hydrate in Water
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The N,N’-bis(2,6-dimethylphenyl)oxalamide was discovered as a powerful ligand for Cu-catalyzed cross-coupling of aryl halides with hydrazine hydrate, leading to the formation of a variety of aryl hydrazines at 80 oC in water under the assistance of K3PO4 and 4 mol% cetyltrimethylammonium bromide from aryl bromides and aryl iodides. Good to excellent yields were observed in most cases.
- Kumar, Siripuram Vijay,Ma, Dawei
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supporting information
p. 1003 - 1006
(2018/09/20)
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- Synthesis method of substituted phenylhydrazine and salt thereof
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The invention relates to a novel synthesis method of substituted phenylhydrazine and salt thereof. A substituted phenyl diazene compound is reduced to generate the substituted phenylhydrazine; a reducing agent B is selected from one or several of a catalytic hydrogenating system, formic acid, formate and formic acid ester compound; the obtained substituted phenylhydrazine can be further acidified to prepare the substituted phenylhydrazine salt which is easily stored and transported. The synthesis method has the advantages that the yield rate is high, the cost is low, the reaction time is short, the technology operation and post-treatment are simple, and the amount of waste water, waste gas and waste residue is fewer; the component of the produced waste water is single, the recycling is convenient, the treatment cost is low, and the green chemical requirement is met; the synthesis method of the substituted phenylhydrazine is more suitable for the large-scale industrialized production.
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Paragraph 0123; 0126; 0127
(2017/08/29)
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- Lipophilic cyanine dyes with enchanced aqueous solubilty
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The present invention relates to a family of cyanine dyes possessing lipophilic alkyl chains and either one or more reactive functional groups, bromo or chloro, or phenyl, sulfophenyl or polysulfophenyl substituents or combinations thereof. The dyes of th
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- Lipophilic sulfophenylcarbocyanine dyes: Synthesis of a new class of fluorescent cell membrane probes
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Two lipophilic sulfophenylcarbocyanine dyes, 3 and 4, were synthesized as a new class of fluorescent cell membrane probes. Compared with other commonly used membrane probes, the new dyes have improved fluorescent quantum yield, retention in cell membranes and are easier to use in staining cells.
- Leung, Wai-Yee,Mao, Fei,Haugland, Richard P.,Klaubert, Dieter H.
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p. 1479 - 1482
(2007/10/03)
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