Ginzburg, O. F. published the artcileProducts of condensation of arylcarbinols with 1-phenyl-3-methyl-5-pyrazolone. III, Product Details of C19H14O2, the publication is Zhurnal Obshchei Khimii (1957), 993-7, database is CAplus.
cf. C.A. 49, 1049a. Refluxing 0.3 g. 1-phenyl-3-methyl-5-pyrazolone and 0.4 g. 9-phenylxanthhydrol in dry MeOH 2 hrs. gave 95.8% 9-phenyl-9-(1-phenyl-3-methyl-4,5-dihydro-5-oxo-4-pyrazolyl)xanthene (I), m. 220-1°; also formed in AcOH solution The product can be dissolved in aqueous alc. NaOH, refluxed, and regenerated on acidification; it is also recovered readily after being refluxed in AcOH containing a little HCl. I (0.43 g.) in 10 ml. 60% EtOH containing 1 g. NaOH was treated with 0.001 mole diazosulfanilic acid and the resulting precipitate separated; the filtrate contained the azo dye from sulfanilic acid and the pyrazolone as shown by the absorption spectrum, while the precipitate was 9-phenylxanthhydrol, m. 159°. 1-Phenyl-3-methyl-4-triphenylmethyl-5-pyrazolone treated similarly gave the same azo compound in solution and a precipitate of Ph3COH. Similar results were obtained with 1-phenyl-3-methyl-4-(9-phenyl-10-methyl-9,10-dihydro-9-acridyl)-5-pyrazolone (II), diphenyl-p-dimethylaminophenyl(1-phenyl-3-methyl-4,5-dihydro-5-oxo-4-pyrazolyl)methane, and bis(p-dimethylaminophenyl)phenyl(1-phenyl-3-methyl-4,5-dihydro-5-oxo-4-pyrazolyl)methane (III), all of which yielded the same azo compound in the solution Conductivity of II and III was determined in PhNO2 over a period of time; a constant value is established only after 24 hrs. The results indicate that the increasing conductivity of such solutions is caused by cleavage between the 4-position of the pyrazolone and the arylcarbinyl group with formation of expected ionic charges. The process is unusually slow.
Zhurnal Obshchei Khimii published new progress about 596-38-3. 596-38-3 belongs to alcohols-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Benzene,Alcohol, name is 9-Phenyl-9H-xanthen-9-ol, and the molecular formula is C19H14O2, Product Details of C19H14O2.
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