Soit modifier 1Cgkreinent la structure du motif actif en introduisant une double liaison, un groupe carbonyle ou autre chose. Dans ces deux optiques, on peut penser B. introduire sur la chaine un substituant organom6tallique comme le silicium ou l'ktain, ou m&me remplacer un atome de carbone par un
Recherches en vue de la synthèse de barbituriques organostannylés, II
✍ Scribed by Jean Claude Maire; Jurphaas Van Rietschoten
- Publisher
- John Wiley and Sons
- Year
- 1971
- Tongue
- German
- Weight
- 366 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
(a) The synthesis of 2,4,6‐trioxo‐1, 3‐di‐tributylstannyl‐hexahydropyrimidine is described.
(b) Trimethyltin hydride is found to add in a photochemical reaction to the terminal double bond of diethyl allyl malonate and allyl methyl malonate, giving respectively diethyl‐(3‐trimethylstannylpropyl)‐ (1) and diethyl‐(3‐trimethylstannylpropyl) (2) methyl‐malonates.
Treated with urea under the usual conditions, (1) and (2) yield organostannyl barbituric acids.
📜 SIMILAR VOLUMES
## Abstract The conversion to free ketoses by transketalisation of ethylene‐ketal and/or isopropylidene derivatives of polyhydroxy‐cyclopentanones has been investigated. The preparation of 2, 3‐dihydroxy‐cyclopentanone and of 2, 3‐dihydroxy‐cyclopentenone has been described.
## KeuchLtel (22. x. 74