𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Polymerizable mesoions, 2. Radical polymerization and 1,4-dipolar polycycloaddition of a 4-vinylphenyl-modified mesoionic 4,6-dioxo-1,3-diazine

✍ Scribed by Helmut Ritter; Rolf Sperber

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
339 KB
Volume
16
Category
Article
ISSN
1022-1336

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Mesoionic 5‐methyl‐4,6‐dioxo‐3‐phenyl‐1‐(4‐vinylphenyl)‐1,3‐diazine (5) was obtained by condensation of 3‐phenyl‐1‐(4‐vinylphenyl)formamidine (3) with methylmalonic acid (4). This vinyl‐substituted mesoionic heterocyclic compound was polymerized by usual radical initiation and, additionally, by thermally controlled polycycloaddition in solution, yielding two different types of polymers, 6, 7. According to the X‐ray diffraction analysis, the structure of a low molecular weight model proves the regioselectivity of the polycycloaddition.

📜 SIMILAR VOLUMES

Polymerizable mesoionic 4,6-dioxo-1,3-di
Polymerizable mesoionic 4,6-dioxo-1,3-diazines, 1. Synthesis and photochemical behavior of polystyrenes with mesoionic 4,6-dioxo-1,3-diazines as pendant groups
✍ Helmut Ritter; Rolf Sperber; Carl Michael Weisshuhn 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 446 KB 👁 1 views

## Abstract Mesoionic 5‐alkyl‐4,6‐dioxo‐1,3‐diphenyl‐2‐(3‐vinylbenzylthio)‐1,3‐diazine (6) was prepared by condensation of alkylmalonic acid (5) with 1,3‐diphenyl‐2‐(3‐vinylbenzyl)isothiourea (4) by use of dicyclohexylcarbodiimide (DCC). Homopolymerization of 6 led to new polystyrene derivatives (7

A selective synthesis of 2-arylamino-4H-
A selective synthesis of 2-arylamino-4H-1,3,4-thiadiazino[5,6-b]-quinoxalines and mesoionic triazolo[4,3-a]quinoxaline
✍ Ho Sik Kim; Tong Eun Kim; Sam Tag Kwag; Yong Tae Park; Young Seuk Hong; Yoshihis 📂 Article 📅 1997 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 277 KB 👁 1 views

## Abstract The reaction of the 6‐chloro‐2‐(1‐methyl‐2‐thiocarbamoylhydrazino)quinoxaline 4‐oxides 3a‐d with trifluoroacetic anhydride gave the 2‐(__N__‐aryl)trifluoroacetamido‐8‐chloro‐4‐methyl‐4__H__‐1,3,4‐thiadiazino‐[5,6‐__b__]quinoxalines 7a‐d, respectively, while the reflux of compounds 3a‐c