𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis of macrocycles incorporating azo-bis(azofurazan) framework

✍ Scribed by A. B. Sheremetev; E. A. Ivanova; D. E. Dmitriev; V. O. Kulagina; Boris B. Averkiev; Mikhail Yu. Antipin

Book ID
102343970
Publisher
Journal of Heterocyclic Chemistry
Year
2005
Tongue
English
Weight
174 KB
Volume
42
Category
Article
ISSN
0022-152X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A series of macrocycles containing four furazan rings bonded by three azo bonds 2, 5 and 7 have been synthesized from the common precursor, 3‐amino‐3′‐nitro(azofurazan) 3. The macrocycles closure is a result of Nο£ΎN bond formation at oxidative cyclization of corresponding bis(3‐aminofurazan‐4‐yl) precursors. X‐Ray crystal structures of macrocycles 2, 2β€’AcOH, 11 and 13 are reported.

πŸ“œ SIMILAR VOLUMES

Synthesis and x-ray study of novel azofu
Synthesis and x-ray study of novel azofurazan-annulated macrocyclic lactams
✍ Aleksei B. Sheremetev; Nataliya S. Aleksandrova; Dmitrii E. Dmitriev; Boris B. A πŸ“‚ Article πŸ“… 2005 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 93 KB

Reaction of 1,4-di-(3-aminofurazan-4-oyl)piperazine 4 with dibromoisocyanurate (DBI) affords azofurazan-annulated macrocyclic lactam 7; the X-ray structure of the macrocycle 7 is reported. The synthesis was started with 3-aminofurazan-4-carboxylic acid 1. A one-pot method for preparation of the amin

Synthesis of 14C-labelled bis-azo biphen
Synthesis of 14C-labelled bis-azo biphenyl dyes
✍ D. Franklin Milam; Robert K. Lynn πŸ“‚ Article πŸ“… 1983 πŸ› John Wiley and Sons 🌐 French βš– 199 KB

Two 14C-label l e d bis-azo biphenyl dyes have been prepared from u n i f o r m l y r i n g -l a b e l l e d 14C-benzidine and 14C-3,3'dimethylbenzidine. The amines were t e t r a -a z o t i z e d w i t h sodium n i t r i t e and HCL. D i r e c t Blue 6 was then prepared from t e t r a -a z o benzid