Phosphasalen Indium Complexes Showing High Rates and Isoselectivities in rac-Lactide Polymerizations.
Angew Chem Int Ed Engl
; 56(19): 5277-5282, 2017 05 02.
Article
em En
| MEDLINE
| ID: mdl-28378455
ABSTRACT
Polylactide (PLA) is the leading bioderived polymer produced commercially by the metal-catalyzed ring-opening polymerization of lactide. Control over tacticity to produce stereoblock PLA, from rac-lactide improves thermal properties but is an outstanding challenge. Here, phosphasalen indium catalysts feature high rates (30±3 m-1 min-1 , THF, 298â
K), high control, low loadings (0.2â
mol %), and isoselectivity (Pi =0.92, THF, 258â
K). Furthermore, the phosphasalen indium catalysts do not require any chiral additives.
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Bases de dados:
MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Reino Unido