Metal-free activation in the anionic ring-opening polymerization of cyclopropane derivatives.
Macromol Rapid Commun
; 30(20): 1731-5, 2009 Oct 19.
Article
em En
| MEDLINE
| ID: mdl-21638445
ABSTRACT
The successful activation observed when using Bu(t) P(4) phosphazene base and thiophenol or bisthiols for the anionic ring opening polymerization (ROP) of di-n-propyl cyclopropane-1,1-dicarboxylate is described. Well-defined monofunctional or difunctional polymers with a very narrow molecular weight distribution were obtained through a living process. Quantitative end-capping of the propagating malonate carbanion was accessible by using either an electrophilic reagent such as allyl bromide or a strong acid such as HCl. Kinetics studies demonstrated a much higher reactivity compared to the conventional route using alkali metal thiophenolates.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Macromol Rapid Commun
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
França