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Your search keyword '"Dicyanomethane"' showing total 4 results
Start Over Descriptor "Dicyanomethane" Topic general chemistry
4 results on '"Dicyanomethane"'

1. Synthesis of Porphyrin-Appended Poly(fluorene-alt -triphenylamine)s: Effect of Appending Groups on Optical and Electrochemical Properties

Author

Veeman Sannasi and D. Jeyakumar

Subjects
Photoluminescence, Materials science, Uv vis absorption, 02 engineering and technology, General Chemistry, Fluorene, 010402 general chemistry, 021001 nanoscience & nanotechnology, Electrochemistry, Photochemistry, Triphenylamine, 01 natural sciences, Porphyrin, 0104 chemical sciences, chemistry.chemical_compound, chemistry, Dicyanomethane, 0210 nano-technology
Published
2018

3. Oxidative coupling and unusual hydroxymethylation of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine in the presence of dicyanomethane

Author

L. N. Kuleshova, Victor N. Khrustalev, Anatoly T. Soldatenkov, and Ayalew W. Temesgen

Subjects
Potassium permanganate, chemistry.chemical_compound, Aqueous solution, Chemistry, Aromatization, Organic chemistry, Dicyanomethane, chemistry.chemical_element, Oxidative coupling of methane, General Chemistry, Manganese, Oxidative phosphorylation, 1 methyl 4 phenyl 1
Abstract

Potassium permanganate oxidizes a mixture of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (THP) 1 and dicyanomethane to 2-dicyanomethylidenetetrahydropyridine 2, but using manganese dioxide leads to the unusual oxidative hydroxymethylation of 1; subsequent treatment of the 3-hydroxymethyltetrahydropyridine 4 formed with aqueous potassium permanganate results in lactamination, accompanied by aromatization or oxodihydroxylation.

Published
1998

4. Cesium loaded on silica as an efficient and recyclable catalyst for the novel synthesis of selenophenes

Author

Suresh Maddila, Sreekanth B. Jonnalagadda, and Palakondu Lavanya

Subjects
Reusable catalyst, Chemistry(all), General Chemical Engineering, chemistry.chemical_element, 010402 general chemistry, 01 natural sciences, Catalysis, lcsh:Chemistry, Organic chemistry, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), ComputingMilieux_MISCELLANEOUS, Reusability, Reaction conditions, 010405 organic chemistry, Condensation, General Chemistry, Recyclable catalyst, 0104 chemical sciences, One-pot reaction, chemistry, lcsh:QD1-999, Caesium, Solvent-free conditions, Chemical Engineering(all), Dicyanomethane, Selenophenes, Selenium
Abstract

A simple and efficient catalytic protocol for the 2-amino-5-substitutedselenophene-3-carbonitrile derivatives ( 4a – k ) via the one-pot condensation of dicyanomethane, selenium and various substituted esters using 1% cesium silica is reported. The present method offers several advantages such as high to excellent yields, short reaction times, recovery and reusability of catalyst, mild reaction conditions and easy workup procedures.

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