In den Rahmen unserer Untersuchungen, die den Einfluss von Substituenten am chromophoren System von gekreuzt konjugierten Ring-A-Dienonen der Steroidreihe auf deren photochemische Umsetzungen betreffen, wurde auch 0-Acetyl-1-dehydro-2-methyl-testosteron (1) [3] einbezogen [4]. Die ll/,stiindige Best
Photochemische Reaktionen. 25. Mitteilung. Die UV.-Bestrahlung von O-Acetyl-1-dehydro-2-formyl-testosteron
β Scribed by E. Altenburger; H. Wehrli; K. Schaffner
- Publisher
- John Wiley and Sons
- Year
- 1963
- Tongue
- German
- Weight
- 429 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
β¦ Synopsis
2753
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The catalytic condensation of dibromopyromellitic acid dianhydride (I) with liquid ammonia at high temperature yielded 1,4-diamino-pyromellitic acid diimide (111).
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Alkaline saponification of I11 and esterification of the resulting product gave tetramethyl diaminopyromellitate (V) and compound IV resp.
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The structure of compound IV as dimethyl ester of diaminopyromellitic acid monoanhydride is deduced from analytical data, absorption spectra, and from its reaction with diazomethane and aniline resp.
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The condensation of I1 with n-propylamine or n-butylamine gave the blue compounds 1,4-di-propylamino-pyromellitic acid di-propylimide (VIII) and 1,4-dibutylamino-pyromellitic acid di-butylimide (IX) resp.
Technisch-chemisches Laboratorium der Eidg. Technischen Hochschule, Zurich
Photochemische Reaktionen
Mitteilungl
π SIMILAR VOLUMES
## Abstract 1. The photochemical reactivity of testosterone (**1**) is strongly influenced by the nature of the solvent. Dimerization (β**18**), pinacone formation (β**19**)), reactions between the steroid and the solvent molecules (β**20a**, **20b**, **21**) and stereospecific isomerizations (β**2