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5.5- Dichloro-2-pyrazolin-4-one

The 4,4-dichloro-2-pyrazolin-5-ones are reduced with hydriodic acid to the corresponding monochloro compound.1605 The 4-mono-halogenated-2-pyrazolin-5-ones react readily with another mole of the same compound or with unhalogenated 2-pyrazolin-5-ones to give bis(2-pyrazolin-5-ones). In the former case the two rings are linked by a double bond,1307 and in the latter by a single bond.1528... [Pg.101]

Pyrazolin-5-one, 3-methyl-1 -phenyl-in colour photography, 5, 299 Pyrazolinones 13C NMR, 5, 193 H NMR, 5, 185, 187 colour couplers in colour photography in non-silver photography, 1, 384 IR spectra, 5, 200-202 structure, 5, 170 Pyrazolinones, dichloro-reactions with alkali, 5, 78 Pyrazolin-3-ones 1-substituted tautomerism, 5, 214 Pyrazolin-5-ones reactions... [Pg.776]

Dichloro-2-phenyl-3-pyrazolin-5-one has been prepared by treatment of perchloro-l-penten-3-one with phenylhydrazine.1201... [Pg.103]

Amino-l-(3,4-dichloro-a-methylbenzyl)-2-pyrazolin-5-one 3H-Pyrazol-3-one, 5-amino-2 [1-(3,4-dichlorophenyl) ethyl]-2,4-diliydro- ... [Pg.479]

See other pages where 5.5- Dichloro-2-pyrazolin-4-one is mentioned: [Pg.77]    [Pg.100]    [Pg.42]    [Pg.122]    [Pg.776]    [Pg.77]    [Pg.338]    [Pg.93]    [Pg.100]    [Pg.130]    [Pg.42]    [Pg.266]    [Pg.122]    [Pg.338]   
See also in sourсe #XX -- [ Pg.82 , Pg.83 ]



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