๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

On the mechanism of osazone formation

โœ Scribed by Alfred Hassner; P. Catsoulacos

Publisher
Elsevier Science
Year
1967
Tongue
French
Weight
241 KB
Volume
8
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

โœฆ Synopsis

The details of the formation of bisphenylhydrazones (osazones) from ketols or aldols have long intrigued the organic chemist. A direct oxidation mechanism first suggested by Fischer' has not received much support. After Weygand proposed routes A and B for osazone formationj, evidence in favor of either pathway was presented by different investigators. 4

๐Ÿ“œ SIMILAR VOLUMES

Action of Cu(II) salts on osazones: side
Action of Cu(II) salts on osazones: side reactions of osotriazole formation
โœ Hassan El Khadem; Pawel Czubarow; Christian Sandstedt ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 245 KB

It is known'" that sugar phenylosazones undergo cyclization in aqueous CuSO, to give phenylosotriazoles in yields ranging from 45-70%. In order to identify the side reactions responsible for the low yields, Cu(I1) salts were treated with two bis(phenylhydrazones) and two mono(phenylhydrazones) and t

The reaction of phenylhydrazine with squ
The reaction of phenylhydrazine with squaric acid: a model for carbohydrate osazone formation
โœ Hassan S. El Khadem; M.Ashraf Shalaby; Bruce Coxon; Alexander J. Fatiadi ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 614 KB

The reaction of squaric acid (1) with phenylhydrazlne yields cyclobutanetetraone poly(phenylhydrazones) (2-41, as reported earlier, as well as squaric acid derivatives, reported here. The latter products are a salt, 1,3-dianilinocyclobutenediylium-2,4\_diolate (51, and 1-anilino-2-phenylhydrazinocyc