𝔖 Bobbio Scriptorium
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Über Synthesen in der Reihe des Hexahydrophenthiazins

✍ Scribed by O. Hromatka; R. Klink; J. Augl; R. Kirchmayr


Book ID
111871096
Publisher
Springer Vienna
Year
1961
Tongue
English
Weight
629 KB
Volume
92
Category
Article
ISSN
0026-9247

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Synthesen in der Carotinoid-Reihe. 2. Mi
✍ O. Isler; M. Montavon; R. Rüegg; P. Zeller 📂 Article 📅 1956 🏛 John Wiley and Sons 🌐 German ⚖ 932 KB

The industrial ,!?-carotene manufacturing procedure based on Inhoffen's synthesis C,, + C, + C,, = C,, is described. ,!?-Ionone is first lengthened to ,!?-C,,-aldehyde as in our vitamin A-synthesis. By acetalisation, condensation with vinyl ether and treatment with acid the new ,!?-C,,-aldehyde is o