14575-62-3Relevant articles and documents
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Brunner,Moser
, p. 682,683 (1929)
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Alkoxypyrazoles and the process for their preparation
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Page/Page column 48-49; 55, (2010/03/02)
The present invention relates to a alkoxypyrazoles preparation process, and new alkoxypyrazole compounds.
A study of the effect of steric hindrance in metal coordination with azo-3-pyrazolones
Snavely, Fred A.,Sweigart, Dwight A.,Yoder, Claude H.,Terzis, Aristides
, p. 1831 - 1834 (2007/10/09)
The formation constants of divalent metal ions with azo derivatives of 1-phenyl-5-methyl-3-pyrazolone have been measured in 75 vol. % dioxane. These azo derivatives are both stronger acids and stronger coordinating ligands than the analogous azo derivatives of 1-phenyl-3-methyl-5-pyrazolone. A steric effect is found with the ortho-substituted derivatives which decreases in the order : I > Br > Cl > F > H and C2H5 > CH3. A possible explanation given is that the ortho groups hinder the retention of water molecules to form MCh2·2H2O in solution (Ch = chelate).