𝔖 Bobbio Scriptorium
✦   LIBER   ✦

New synthesis of 28- and 30- crown-formazans and Bis formazans

✍ Scribed by Ashraf A. Abbas

Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
375 KB
Volume
54
Category
Article
ISSN
0040-4020

No coin nor oath required. For personal study only.

✦ Synopsis

The macrocyclic cyano crown formazans 3a-e and cyano crown formazans with two formazyl moieties 4a-c were prepared by the azo coupling of the appropriate bis diazonittm salts 2a-c with cyanoacetic acid m different meditun. The Bis macrocyclic crown formazan 9 was prepared by condensation of 1.3-diaminopropane with the 16-oxo crown formazan 8. The latter was prepared by ozonolysis of 16-methylene crown formazan 3a.

πŸ“œ SIMILAR VOLUMES

New synthesis of macrocyclic crown-forma
New synthesis of macrocyclic crown-formazans from pyruvic acid derivatives
✍ Yehia A. Ibrahim; Ahmed H.M. Elwahy; Ashraf A. Abbas πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 French βš– 704 KB

## Absfmk The macmcyclic crown-formamas 7ac. 121-g were prepared by the azc coupling of the appropriate bisdiazoaium salts 4a-c with pyruvic acid and a&ruvic acids 8~. The ready accessability of the latters e&m an easy access towards l,$-symnWically disubstihW4i-3-arylformazam e.g. 1Oa-g as well a