Coupling, of benzenediazonium chloride with acetoacetic acid

Coupling, of benzenediazonium chloride with acetoacetic acid, 32, 84 of diazotized 3,5-dichloro-2-amino-benzoic acid to give 4,4, 6,6 -tetra-chlorodiphenic acid, 31, 96 of diphenyldichloromethane to tetra-phenylethylene, 31, 104 Crotonaldehyde, diethyl acetal, 32, 5 Cyanoacetamide, 32, 34 Cyanoacetic acid, 31, 25 -Cyanobenzaldehyde, 30, 100 3-Cyano-5,6-dimethyl-2(l)-pyridone,... [Pg.57]

Coupling, of benzenediazonium chloride with acetoacetic acid, 32, 84 of diazotized p-aminoacetophenone with quinone, 34, 1... [Pg.55]

Occasionally it is unnecessary to isolate the hydrazone since this is itself accessible by a coupling reaction. Numerous formazans can be obtained by treating compounds containing active methylene groups directly with 2 molar proportions of a diazonium salt. For example, pyruvic acid is converted into 3-oxalo-l,5-diphenylformazan (fi4formazylglyoxalic acid ) in 94% yield by benzenediazonium chloride in potassium hydroxide solution.351 Acyl groups (CH3CO or COOH) are often eliminated in such reactions 343,344,352 thus acetoacetic ester yields ethyl l,5-diphenylformazan-3-carboxylate almost... [Pg.438]

See also in sourсe #XX -- [ Pg.32 , Pg.84 ]

See also in sourсe #XX -- [ Pg.32 , Pg.84 ]

See also in sourсe #XX -- [ Pg.32 , Pg.84 ]

See also in sourсe #XX -- [ Pg.32 , Pg.84 ]

See also in sourсe #XX -- [ Pg.32 , Pg.84 ]

See also in sourсe #XX -- [ Pg.32 , Pg.84 ]

See also in sourсe #XX -- [ Pg.32 , Pg.84 ]

See also in sourсe #XX -- [ Pg.32 , Pg.84 ]

See also in sourсe #XX -- [ Pg.32 , Pg.84 ]

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