Guaiacolate derivatives‐containing sodium complexes as catalysts for l‐lactide polymerization

In this study, guaiacolate derivatives‐containing tetranuclear sodium catalysts were synthesized, and their catalytic activity in l‐lactide (LA) polymerization was evaluated. Using LBF‐Na (sodium complex bearing 2,3‐dihydro‐2,2‐dimethyl‐7‐benzofuranolate) as a catalyst, the polymerization of LA was...

Full description

Saved in:
Bibliographic Details
Published in:Applied organometallic chemistry 2023-02, Vol.37 (2), p.n/a
Main Authors: Wu, Tzu‐Yi, Lai, Feng‐Jie, Lee, Wei, Chang, Chun‐Juei, Chang, Yu‐Lun, Ding, Shangwu, Chen, Hsuan‐Ying, Chang, Yung‐Chi
Format: Article
Language:English
Subjects:
Benzyl alcohol
Catalysts
Catalytic activity
Catalytic converters
Chemical synthesis
Chemistry
Dichloromethane
guaiacol
lactide
Polylactic acid
Polymerization
ring‐opening polymerization
Sodium
sodium complex
Solvents
Tetrahydrofuran
Toluene
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, guaiacolate derivatives‐containing tetranuclear sodium catalysts were synthesized, and their catalytic activity in l‐lactide (LA) polymerization was evaluated. Using LBF‐Na (sodium complex bearing 2,3‐dihydro‐2,2‐dimethyl‐7‐benzofuranolate) as a catalyst, the polymerization of LA was studied in various solvents. LBF‐Na polymerized LA in dichloromethane, tetrahydrofuran, and toluene, and the catalytic activity of LBF‐Na was similar in these solvents. Among the sodium complexes, LOH‐Na (sodium complex bearing guaiacolate) exhibited higher catalytic activity (5 min, conversion = 93%; MnGPC = 7200) than the other tetranuclear sodium complexes. Furthermore, LOH‐Na exhibited an “immortal” property after 20 equivalents of benzyl alcohol loading during LA polymerization and good controllability in polylactide production. Thus, guaiacolate ligands increase the catalytic activity of sodium catalysts in LA polymerization in both coordinating and halogen‐containing solvents and under the condition of extra alcohol loading.
ISSN:0268-2605
1099-0739
DOI:10.1002/aoc.6967