Die beiden vorangegangenen Mitteilungen dieser Reihe befassten sich mit der Herstellung und den Eigenschaften der 4-Chinuelidin-carbonsiiure2). Im Busammenhang mit laufenden Untersuchungen wurde auch ein Verfahren zur Herstellung der 3-Chinuclidin-carbonsiiure (Is) entwickelt. Ausser der Synthese di
3-Substituierte Dehydrochinuclidine und Chinuclidine. Chinuclidin-Reihe, 8. Mitteilung
✍ Scribed by C. A. Grob; J. Zergenyi
- Publisher
- John Wiley and Sons
- Year
- 1963
- Tongue
- German
- Weight
- 682 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Several 3‐substituted dehydroquinuclidines and corresponding quinuclidines have been prepared.
📜 SIMILAR VOLUMES
## Abstract The synthesis of 4‐bromo and 4‐hydroxy‐quinuclidines Ia and Ib, respectively, from 4‐piperidones by a modified REFORMATZKI reaction is described.
The preparation of a number of 4‐substituted quinuclidines and the P__K__~a~ values of their hydroperchlorates in water are reported.
## Abstract 1‐Methyl‐4‐cyano‐piperidine (XIII), an intermediate in the synthesis of 4‐substituted quinuclidines, has been prepared and its alkylation at the 4‐position studied.
## Abstract A fragmentation reaction can be induced by generating a γ‐amino‐carbonium ion through a Wagner‐Meerwein rearrangement of a δ‐amino‐__p__‐toluenesulfonic ester. Thus solvolysis of 4‐tosyloxymethyl‐quinuclidine (9a) in aqueous ethanol yields the 4‐methylene‐1‐aza‐cycloheptanes (20a) and (
The total synthesis of 7′,8′‐dihydro‐γ‐carotene (β‐zeacarotene) has been accomplished by a WITTIG reaction of 15,15′‐dehydro‐apo‐12′‐carotenal(C~35~) with farnesyltriphenyl‐phosphonium bromide.