Nachdruck verboten. -Tous droits r6servks. -Printed by Birkhauser AG., Rasel, Switzerland Erscheint 8mal jahrlich -Parait 8fois par an Sociktk suisse de chimie, Bile -Societl svizzera di chimica, Basilea 49. Synthhse de d6rivCs acylbs de la formamidoximel) par F.
Progrès récents dans la biochimie de la choline et de ses dérivés
✍ Scribed by Ernest Kahane; Jeanne Lévy
- Publisher
- John Wiley and Sons
- Year
- 1946
- Tongue
- German
- Weight
- 420 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0018-019X
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On truurera la description dkLaill&> de l'apparril (is. I;. Gysm, These Geneye 192.5. merit par le chloye sous pression. I l u t k ~I , A. 441, I (192.5).
## 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.
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Synthesis of 1,3-benzoselenazine derivatives is attempted via cyclization of o-methylselenobenzoylformarnidines, via ring-expansion of 1,2-benzisoselenazolin-3-ones and via N-ethoxycarbonyl o-bromoselcnobenzaldimine. This research succeeded inthe synthesis of 2,j-dihydro-4H-1,3-benzoselcnazine-2,4-d