𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis of polyetherols with purine ring. Kinetics and mechanisms of reactions, part 1: Reaction of hydroxymethyl derivatives of uric acid with oxiranes

✍ Scribed by Irmina Cisek-Cicirko; Jacek Lubczak

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
133 KB
Volume
37
Category
Article
ISSN
0538-8066

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The kinetics and mechanisms of the initial steps of formation of polyetherols from hydroxymethyl derivatives of uric acid and oxiranes were studied. It has been found that initial steps of the reaction of polyetherol formation occur without a catalyst. The NH groups, which are formed upon release of formaldehyde from N‐ and O‐hydroxymethyl derivatives of uric acid, take part in the reaction. Β© 2005 Wiley Periodicals, Inc. Int J Chem Kinet 37: 464–471, 2005

πŸ“œ SIMILAR VOLUMES

Reactions of hydroxymethyl derivatives o
Reactions of hydroxymethyl derivatives of uric acid with oxiranes: Recognition of mechanism based on kinetic studies
✍ Jacek Lubczak πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons 🌐 English βš– 197 KB

## Abstract Kinetic and mechanistic studies on the reaction between 1 equivalent of 1,3,7,9‐tetrakis(hydroxymethyl) ureate with 1 equivalent of oxirane (ethylene oxide or propylene oxide) are presented. This study led to recognition of the mechanism of reaction. It has been found that during the re

Synthesis of polyetherols with purine ri
Synthesis of polyetherols with purine ring. Kinetics and mechanisms of reactions, part 2: Reactions in the presence of triethylamine
✍ Irmina Cisek-Cicirko; Jacek Lubczak πŸ“‚ Article πŸ“… 2005 πŸ› John Wiley and Sons 🌐 English βš– 179 KB

## Abstract The kinetics and mechanism of reaction between hydroxymethyl derivatives of uric acid and oxiranes in the presence of triethylamine as catalyst was studied. The formation of polyetherols was inhibited in initial steps of the reaction. Two different mechanisms were established for the re

Synthesis of polyetherols with isocyanur
Synthesis of polyetherols with isocyanuric ring. Kinetics and mechanisms of reactions, part 1: Reaction between isocyanuric acid and ethylene carbonate
✍ Jacek Lubczak; Elwira WΔ™glowska πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 212 KB

## Abstract The reaction between isocyanuric acid and ethylene carbonate results in the formation of polyetherols. The kinetic and mechanistic studies revealed that the initial step of the reaction is zero order related to ethylene carbonate. The rate‐limiting step is the decomposition of an interm

Synthesis of polyetherols with isocyanur
Synthesis of polyetherols with isocyanuric ring. Kinetics and mechanisms of reactions, part 2: Consecutive reaction of ethylene carbonate with isocyanuric acid
✍ Jacek Lubczak; Elwira WΔ™glowska πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 140 KB

## Abstract The kinetics and mechanism of the reaction between isocyanuric acid and ethylene carbonate was studied. The multistep reaction in the presence of potassium carbonate as catalyst leads to polyetherols. The imide and hydroxyl groups of intermediates react with ethylene carbonate by slight