Phosphonium ylide catalysis: a divergent diastereoselective approach to synthesize cyclic ketene acetals [thia(zolidines/zinanes)] from β-ketothioamides and dihaloalkanes

2019 ◽  
Vol 17 (41) ◽  
pp. 9151-9162 ◽  
Author(s):  
Monish Arbaz Ansari ◽  
Dhananjay Yadav ◽  
Sonam Soni ◽  
Maya Shankar Singh
Keyword(s):  
Metal Free ◽  
Cyclic Ketene Acetals ◽  
Ketene Acetals

Phosphonium ylides are being reported here as a catalyst for the formation of thiazolidines and 1,3-thiazinanes from β-ketothioamides with dihaloalkanes via [3 + 2] and [3 + 3] annulations under metal-free conditions.

Scope and limitations of the nitroxide-mediated radical ring-opening polymerization of cyclic ketene acetals

2013 ◽  
Vol 4 (17) ◽  
pp. 4776 ◽  
Author(s):  
Antoine Tardy ◽  
Vianney Delplace ◽  
Didier Siri ◽  
Catherine Lefay ◽  
Simon Harrisson ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Radical Ring ◽  
Cyclic Ketene Acetals ◽  
Ketene Acetals

scholarly journals Novel monomers in radical ring-opening polymerisation for biodegradable and pH responsive nanoparticles

2019 ◽  
Vol 10 (39) ◽  
pp. 5285-5288 ◽  
Author(s):  
Jenny Folini ◽  
Chao-Hung Huang ◽  
James C. Anderson ◽  
Wolfgang P. Meier ◽  
Jens Gaitzsch
Keyword(s):  
Ring Opening ◽  
Ph Sensitive ◽  
Ph Responsive ◽  
Radical Ring ◽  
Cyclic Ketene Acetals ◽  
Ketene Acetals

We report the first amine-bearing cyclic ketene acetals (CKAs) for radical ring-opening polymerisation (RROP). The resulting polyesters and their corresponding nanoparticles were biodegradable and showed the desired pH sensitive behaviour.

scholarly journals Radical Copolymerization of Vinyl Ethers and Cyclic Ketene Acetals as a Versatile Platform to Design Functional Polyesters

2017 ◽  
Vol 129 (52) ◽  
pp. 16742-16747 ◽  
Author(s):  
Antoine Tardy ◽  
Jean-Claude Honoré ◽  
Johanna Tran ◽  
Didier Siri ◽  
Vianney Delplace ◽  
...  
Keyword(s):  
Radical Copolymerization ◽  
Vinyl Ethers ◽  
Cyclic Ketene Acetals ◽  
Ketene Acetals

13C NMR study of the structures of some acyclic and cyclic ketene acetals

Tetrahedron ◽  
1978 ◽  
Vol 34 (15) ◽  
pp. 2365-2370 ◽  
Author(s):  
E. Taskinen ◽  
M.-L. Pentikäinen
Keyword(s):  
13C Nmr ◽  
Nmr Study ◽  
Cyclic Ketene Acetals ◽  
Ketene Acetals

The Radical Ring-Opening Polymerization of Cyclic Ketene Acetals Revisited: An Experimental and Theoretical Study

2020 ◽  
Author(s):  
Antoine Tardy ◽  
Noémie Gil ◽  
Christopher M. Plummer ◽  
Didier Siri ◽  
Didier Gigmes ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Radical Polymerization ◽  
Kinetic Modeling ◽  
In Silico ◽  
Ring Opening ◽  
Theoretical Study ◽  
Ring Opening Polymerization ◽  
Radical Ring ◽  
Cyclic Ketene Acetals ◽  
Ketene Acetals

Radical Ring-Opening polymerization (rROP) of Cyclic Ketene Acetals (CKAs) combines the advantages of both ring-opening and radical polymerization thereby allowing the robust production of polyesters. In this article we investigate in detail the radical ring-opening polymerization of model CKA monomers and demonstrate by the combination of DFT calculations and kinetic modeling using PREDICI software that we are now able to predict <i>in silico</i> the ring-opening ability of CKA monomers<br>

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