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Malonic dinitrile

The acid, referred to as tetra acid , is prepared as follows In a Friedel-Crafts reaction, acenaphthene 72 is reacted with malonic dinitrile and aluminum chloride. The resulting condensation product 75 is oxidized with sodium chlorate/hy-drochloric acid to form the dichloroacenaphthindandione 76. Oxidation with sodium hypochlorite solution/sodium permanganate affords naphthalene tetracar-boxylic acid 68, mostly existing as the monoanhydride 68a. The dianhydride, on the other hand, evolves only after drying at approx. 150°C. [Pg.483]

Compound 259 (R = aryl) also reacts with malonic dinitrile, without the addition of special bases, to form the 1,4-dithiafulvene (304).151 Campaigne et a/.153l,b,d successfully carried out similar condensations in boiling glacial acetic acid/pyridine.172... [Pg.128]

SYNS CYANOACETONITRILE DICYANOMETH-ANE DWUMETYLOSULFOTLENKU (POLISH) MALONIC DINITRILE METHYLENE CYANIDE NITRIL KYSELINY MALONOVE (CZECH) PROPANE-... [Pg.855]

The chemistry of selenazoles is reviewed in a book <04MI777>. Addition of malonic dinitrile with phosphorus pentaselenide in aqueous ethanol affords selenomalonic diamide 282, which undergoes double cyclization with phenacyl bromide to furnish bis(selenazole) 283 <04S875>. 2-Acyl-l,3-selenazoles 287 are prepared in two steps from bromomethyl ketones 284 and selenoamides 285. A facile preparation of l,3-selenazole-5-carboxylic acids 289 is based on the cyclization of selenazadienes 288 with chloroacetyl chloride <048233>. [Pg.221]

MALONIC DINITRILE (109-77-3) Combustible solid. Dust or powder forms explosive mixture with air (flash point 234°F/122°C cc). Incompatible with sulfuric acid. May polymerize violently on contact with alkalis or temperatures above 160°F/71°C. [Pg.727]

Finally there is the reaction of tetramethylformamidinium chloride with hydrogen cyanide at 0-10° which gradually yields (dimethylamino)malon-dinitrile in 92% yield 861... [Pg.978]

Synonyms/Trade Names Cyanoacetonitrile, Dicyanomethane, Malonic dinitrile... [Pg.190]

Malonic acid dinitrile Malonic dinitrile. See Malononitrile... [Pg.2480]

Type F Synthesis.— The substituted 5-ethoxythiocarbonylthiophen (24) functions as a thioacylating agent, converting malonic dinitrile into the... [Pg.545]

See other pages where Malonic dinitrile is mentioned: [Pg.546]    [Pg.619]    [Pg.546]    [Pg.619]    [Pg.339]    [Pg.546]    [Pg.619]    [Pg.783]    [Pg.784]    [Pg.646]    [Pg.546]    [Pg.619]    [Pg.339]    [Pg.43]    [Pg.1229]    [Pg.172]    [Pg.656]   
See also in sourсe #XX -- [ Pg.190 ]



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