scholarly journals Preparation of Lactams from Cyclic Anhydrides via N ‐Carboxyanhydride Intermediates

2021 ◽  
Author(s):  
Simon N. Smith ◽  
Stephen J. Connon
Keyword(s):  
Cyclic Anhydrides

scholarly journals Organo-Catalyzed/Initiated Ring Opening Co-Polymerization of Cyclic Anhydrides and Epoxides: an Emerging Story

2021 ◽  
Author(s):  
Franck Le Bideau ◽  
Samuel Dagorne ◽  
Samir Messaoudi ◽  
Françoise Dumas ◽  
Gaël Printz ◽  
...  
Keyword(s):  
Ring Opening ◽  
Everyday Lives ◽  
Cyclic Anhydrides

Polyesters are omnipresent in our everyday lives and their synthesis via eco-friendly methods is becoming a major challenge today. The co-polymerization of cyclic anhydrides and epoxides was first reported by...

scholarly journals Ring-Opening Copolymerization of Cyclohexene Oxide and Cyclic Anhydrides Catalyzed by Bimetallic Scorpionate Zinc Catalysts

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1651
Author(s):  
Felipe de la Cruz-Martínez ◽  
Marc Martínez de Sarasa Buchaca ◽  
Almudena del Campo-Balguerías ◽  
Juan Fernández-Baeza ◽  
Luis F. Sánchez-Barba ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Reaction Mechanism ◽  
Catalytic System ◽  
Phthalic Anhydride ◽  
Ring Opening ◽  
High Selectivity ◽  
Zinc Complexes ◽  
Cyclohexene Oxide ◽  
Reaction Conditions ◽  
Cyclic Anhydrides

The catalytic activity and high selectivity reported by bimetallic heteroscorpionate acetate zinc complexes in ring-opening copolymerization (ROCOP) reactions involving CO2 as substrate encouraged us to expand their use as catalysts for ROCOP of cyclohexene oxide (CHO) and cyclic anhydrides. Among the catalysts tested for the ROCOP of CHO and phthalic anhydride at different reaction conditions, the most active catalytic system was the combination of complex 3 with bis(triphenylphosphine)iminium as cocatalyst in toluene at 80 °C. Once the optimal catalytic system was determined, the scope in terms of other cyclic anhydrides was broadened. The catalytic system was capable of copolymerizing selectively and efficiently CHO with phthalic, maleic, succinic and naphthalic anhydrides to afford the corresponding polyester materials. The polyesters obtained were characterized by spectroscopic, spectrometric, and calorimetric techniques. Finally, the reaction mechanism of the catalytic system was proposed based on stoichiometric reactions.

scholarly journals Triethylborane-Assisted Synthesis of Random and Block Poly(ester-carbonate)s through One-Pot Terpolymerization of Epoxides, CO2, and Cyclic Anhydrides

2021 ◽  
Vol 54 (6) ◽  
pp. 2711-2719
Author(s):  
Vamshi K. Chidara ◽  
Senthil K. Boopathi ◽  
Nikos Hadjichristidis ◽  
Yves Gnanou ◽  
Xiaoshuang Feng
Keyword(s):  
One Pot ◽  
Cyclic Anhydrides

Synthesis of both Enantiomers of Hemiesters by Enantioselective Methanolysis of Meso Cyclic Anhydrides Catalyzed by α-Amino Acid-Derived Chiral Thioureas†

2010 ◽  
Vol 75 (15) ◽  
pp. 5417-5420 ◽  
Author(s):  
Rubén Manzano ◽  
José M. Andrés ◽  
María-Dolores Muruzábal ◽  
Rafael Pedrosa
Keyword(s):  
Amino Acid ◽  
Cyclic Anhydrides

Alkene-Directed Regioselective Nickel-Catalyzed Cross-Coupling of Cyclic Anhydrides with Diorganozinc Reagents

2007 ◽  
Vol 46 (48) ◽  
pp. 9301-9304 ◽  
Author(s):  
Rebecca L. Rogers ◽  
Jennifer L. Moore ◽  
Tomislav Rovis
Keyword(s):  
Cross Coupling ◽  
Cyclic Anhydrides
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