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L-Cyano-3-phenylurea

Condensation of phenyl isocyanate with an aqueous solution of the sodium salt of cyanamide and acidification affords l-cyano-3-phenylurea (4). ... [Pg.424]

I-Cyano-3-phenylurea, first obtained by the alkaline hydrolysis of 5-anilino-3- -toluyl-l,2,4-oxadiazole, has been prepared by tlic condensation of phenyl isocyanate and the sodium salt of cyanamide. However, in these publications an incorrect structural assignment for the product was made. 1-Cyano-3-phenyl-urea is obtained also, together with other products, by warming gently l-cyano-3-phenylthiourea with caustic soda in the presence of ethylene chlorohydrin, or by gradually adding caustic )otash to a boiling solution of 1-phenyldithiobiuret and ethylene clilorohydrin in ethanol. ... [Pg.11]

N-Cyanoguanidine, 35, 69 Cyanohydrin formation, 33, 7 3-Cyano-6-isobutyl-2(l)-pyridone, 32, 34 3-Cyano-6-methyl-2(1)-pyridone, 32, 32 l-Cyano-3-a-naphthylurea, 36, 11 1-Cyano-3-phenylurea, 36, 8 Cyclic acyloins, 36, 82 Cyclization, (3-aminoethylsulfuric acid to ethylenimine, 30, 38 1,2-benzo-3,4-dihydrocarbazole from phenylhydrazine and a-tetralone,... [Pg.47]

See other pages where L-Cyano-3-phenylurea is mentioned: [Pg.9]    [Pg.68]    [Pg.69]    [Pg.493]    [Pg.9]    [Pg.68]    [Pg.69]    [Pg.493]    [Pg.8]    [Pg.90]    [Pg.99]    [Pg.46]   
See also in sourсe #XX -- [ Pg.170 , Pg.842 ]



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