Lichtinduzierter Abbau des 4-n-Butyl-1.2-diphenylpyrazolidin-3.5-dions (Phenylbutazon)
✍ Scribed by Prof. Dr. Dr. med. Johannes Reisch; Karl-Günter Weidmann; Joachim Triebe
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 531 KB
- Volume
- 310
- Category
- Article
- ISSN
- 0365-6233
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract The condensation of 1 or 3 [^14^C] n‐butylmalonate diethyl ester (III) with hydrazobenzene (IV) yields up to 90 per cent of 3 or 5 [^14^C] 4‐butyl‐1, 2‐diphenyl‐3, 5‐pyrazolidinedione, if n‐butyl alcohol is used as a solvent and the corresponding sodium alcoholate as a condensing agent
particle sizes at pH 0, 1, and 2 ; the precipitates settle quickly and are easy to wash. Particle size, surface characteristics,['] bulk density, and electrochemical properties['"' of the product depend strongly on the p H value during the precipitation (Fig. 1, left and middle). The properties of t