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Synthesen in der Vitamin-A2-Reihe. 4. Mitteilung. Physikalische Eigenschaften von isomeren Vitamin-A- und Vitamin-A2-Verbindungen

✍ Scribed by C. V. Planta; U. Schweiter; L. Chopard-dit-Jean; R. Rüegg; M. Kofler; O. Isler

Publisher
John Wiley and Sons
Year
1962
Tongue
German
Weight
536 KB
Volume
45
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

The physical properties of 6 vitamin A~2~ isomers are reported and compared with those of the corresponding vitamin A isomers.

📜 SIMILAR VOLUMES

Synthesen in der Vitamin-A2-Reihe. 2. Mi
Synthesen in der Vitamin-A2-Reihe. 2. Mitteilung. Die Darstellung von vier sterisch ungehinderten Vitamin-A2-Isomeren
✍ U. Schwieter; C. V. Planta; R. Rüegg; O. Isler 📂 Article 📅 1962 🏛 John Wiley and Sons 🌐 German ⚖ 832 KB

## Abstract Four crystalline vitamin A~2~ isomers, __i.e.__ all‐__trans__, 13‐__cis__, 9‐__cis__, and 9,13‐di‐__cis__, as well as the corresponding acids and aldehydes, have been prepared from __cis__‐ and __trans__‐dehydro‐β‐ionylideneacetaldehyde.

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✍ U. Schwieter; G. Saucy; M. Montavon; C. v. Planta; R. Rüegg; O. Isler 📂 Article 📅 1962 🏛 John Wiley and Sons 🌐 German ⚖ 768 KB

## Abstract Crystalline all‐__trans__‐vitamin A~2~ has been prepared from dehydro‐β‐C~14~‐aldehyde and the isomeric 3‐methyl‐pent‐2‐en‐4‐yn‐1‐ols. Two vitamin A~2~ isomers with Pauling hindrance (11‐__cis__ and 11, 13‐di‐__cis__) have been synthesized from the same starting materials.

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✍ U. Schwieter; C. V. Planta; R. Rüegg; O. Isler 📂 Article 📅 1962 🏛 John Wiley and Sons 🌐 German ⚖ 490 KB

Four crystalline vitamin A, isomers, i.e. all-trans, 13-cis, 9-&, and 9,13-di-cis, as well as the corresponding acids and aldehydes, have been prepared from cis-and tram-dehydro-p-ion ylideneacetaldehyde. Chemische Forschungsabteilung der F. HOFFMANN-LA ROCHE & Co. A.G., Base1 64. Synthesen in der V