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4-Hydroxymethyl-3-pyrazolin-5-ones

Pyrazolones show a great variety of reactions with carbonyl compounds (B-76MI40402). For instance, antipyrine is 4-hydroxymethylated by formaldehyde and it also undergoes the Mannich reaction. Tautomerizable 2-pyrazolin-5-ones react with aldehydes to yield compound (324) and with acetone to form 4-isopropylidene derivatives or dimers (Scheme 8 Section 4.02.1.4.10). [Pg.242]

Bis[p-(dimethylamino)phenyl] hydroxymethyl]-4-chloro-3-methyl-1 -phenyl-2-pyrazolin-5-one, B-00319... [Pg.1194]

See other pages where 4-Hydroxymethyl-3-pyrazolin-5-ones is mentioned: [Pg.72]    [Pg.74]    [Pg.101]    [Pg.47]    [Pg.72]    [Pg.74]    [Pg.102]    [Pg.147]    [Pg.1149]    [Pg.1273]    [Pg.1277]    [Pg.1298]    [Pg.1328]    [Pg.1352]   
See also in sourсe #XX -- [ Pg.49 , Pg.54 , Pg.56 ]



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