Weak Lewis Pairs as Catalysts for Highly Isoselective Ring-Opening Polymerization of Epimerically Labile rac-O-Carboxyanhydride of Mandelic Acid

2020 ◽  
Vol 53 (3) ◽  
pp. 946-955 ◽  
Author(s):  
Jinxing Jiang ◽  
Yaqin Cui ◽  
Yaguang Lu ◽  
Bin Zhang ◽  
Xiaobo Pan ◽  
...  
Keyword(s):  
Ring Opening ◽  
Mandelic Acid ◽  
Ring Opening Polymerization ◽  
Lewis Pairs

Highly Regioselective Ring-Opening Polymerization of Cyclic Diester for Alternating Sequence-Controlled Copolymer Synthesis of Mandelic Acid and Glycolic Acid

2019 ◽  
Vol 52 (20) ◽  
pp. 7564-7571 ◽  
Author(s):  
Yaru Wang ◽  
Zhaowei Jia ◽  
Jinxing Jiang ◽  
Xiaoyang Mao ◽  
Xiaobo Pan ◽  
...  
Keyword(s):  
Ring Opening ◽  
Mandelic Acid ◽  
Glycolic Acid ◽  
Ring Opening Polymerization

scholarly journals Preparation of Stereoregular Isotactic Poly(mandelic acid) through Organocatalytic Ring-Opening Polymerization of a CyclicO-Carboxyanhydride

2014 ◽  
Vol 53 (50) ◽  
pp. 13858-13861 ◽  
Author(s):  
Antoine Buchard ◽  
David R. Carbery ◽  
Matthew G. Davidson ◽  
Petya K. Ivanova ◽  
Ben J. Jeffery ◽  
...  
Keyword(s):  
Ring Opening ◽  
Mandelic Acid ◽  
Ring Opening Polymerization

Insights into the mechanism for ring-opening polymerization of lactide catalyzed by Zn(C6F5)2/organic superbase Lewis pairs

2016 ◽  
Vol 6 (21) ◽  
pp. 7763-7772 ◽  
Author(s):  
Xiao-Qing Li ◽  
Bin Wang ◽  
He-Yuan Ji ◽  
Yue-Sheng Li
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Experimental Results ◽  
Maldi Tof Ms ◽  
Maldi Tof ◽  
Good Consistency ◽  
Plausible Mechanism ◽  
Tof Ms ◽  
Lewis Pairs

A plausible mechanism for ring-opening polymerization of lactide catalyzed by Zn(C6F5)2-based Lewis pairs was proposed based on in situ NMR and MALDI-TOF MS analyses. Several experimental results show very good consistency with the proposed mechanism.

Controlled ring-opening polymerization ofl-lactide and ε-caprolactone catalyzed by aluminum-based Lewis pairs or Lewis acid alone

2016 ◽  
Vol 55 (2) ◽  
pp. 297-303 ◽  
Author(s):  
Yuushou Nakayama ◽  
Shunsuke Kosaka ◽  
Kentaro Yamaguchi ◽  
Gentaro Yamazaki ◽  
Ryo Tanaka ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Lewis Pairs

Controlled ring-opening polymerization of α-amino acid N-carboxy-anhydride by frustrated amine/borane Lewis pairs

2017 ◽  
Vol 53 (37) ◽  
pp. 5155-5158 ◽  
Author(s):  
Hongyuan Zhang ◽  
Yanzhao Nie ◽  
Xinmei Zhi ◽  
Haifeng Du ◽  
Jing Yang
Keyword(s):  
Amino Acid ◽  
Lewis Acid ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Amine Groups ◽  
Lewis Pairs

An FLP intermediate formed through the bulky borane Lewis acid and the amine groups of the propagation chain end controlled the ring-opening polymerization of α-amino acid N-carboxy-anhydride monomers.

Simple Lewis pairs of zinc salts and organobases as bifunctional catalysts for controlled ring-opening polymerization of O-carboxyanhydrides

2019 ◽  
Vol 10 (40) ◽  
pp. 5498-5506 ◽  
Author(s):  
Pei Wang ◽  
Jinpeng Liang ◽  
Ting Yin ◽  
Jing Yang
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Bifunctional Catalysis ◽  
Bifunctional Catalysts ◽  
Hydroxyalkanoic Acid ◽  
Zinc Salts ◽  
Lewis Pairs

Simple Lewis pairs consisting of organobases and zinc salts were explored to promote ring-opening polymerization of phenyl O-carboxyanhydride via bifunctional catalysis, producing well-defined poly(α-hydroxyalkanoic acid)s with good isotacticity (Pm = 0.88).

scholarly journals Preparation of Stereoregular Isotactic Poly(mandelic acid) through Organocatalytic Ring-Opening Polymerization of a CyclicO-Carboxyanhydride

2014 ◽  
Vol 126 (50) ◽  
pp. 14078-14081 ◽  
Author(s):  
Antoine Buchard ◽  
David R. Carbery ◽  
Matthew G. Davidson ◽  
Petya K. Ivanova ◽  
Ben J. Jeffery ◽  
...  
Keyword(s):  
Ring Opening ◽  
Mandelic Acid ◽  
Ring Opening Polymerization
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