Effect of chelation on the polycondensation of monomers having an active ester group

1972 ◽  
Vol 10 (2) ◽  
pp. 541-551 ◽  
Author(s):  
N. Ogata ◽  
K. Sanui ◽  
T. Ikari ◽  
K. Okouchi
Keyword(s):  
Ester Group ◽  
Active Ester

Polynuclear Copper(I) Clusters Supported by Carboxylate Ligands with Coordinatively Active Ester Group

2012 ◽  
Vol 23 (3) ◽  
pp. 811-821 ◽  
Author(s):  
Oleksandr Hietsoi ◽  
Cristina Dubceac ◽  
Alexander S. Filatov ◽  
Marina A. Petrukhina
Keyword(s):  
Ester Group ◽  
Carboxylate Ligands ◽  
Active Ester

Alternating copolymerization of a surface-active monomer having an active ester group with dialkyl fumarates

Polymer ◽  
1995 ◽  
Vol 36 (24) ◽  
pp. 4675-4681 ◽  
Author(s):  
Kimiko Takahashi ◽  
Mika Suzuki ◽  
Junji Kido ◽  
Noriyuki Kuramoto ◽  
Katsutoshi Nagai
Keyword(s):  
Ester Group ◽  
Active Ester ◽  
Surface Active ◽  
Alternating Copolymerization

Synthesis and Interfacial Properties of Polymerizable and Nonpolymerizable Surfactants Having an Active Ester Group

1995 ◽  
Vol 172 (1) ◽  
pp. 63-70 ◽  
Author(s):  
Kimiko Takahashi ◽  
Junji Kido ◽  
Noriyuki Kuramoto ◽  
Katsutoshi Nagai
Keyword(s):  
Interfacial Properties ◽  
Ester Group ◽  
Active Ester

Endgroup and Sidechain Functionalization of Surface-Initiated ROMP Thin Films: Progress Towards ROMP-Based Molecular Wires

2018 ◽  
Author(s):  
Nicholas Marshall
Keyword(s):  
Thin Films ◽  
Contact Angle ◽  
Cyclic Voltammetry ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Ring Opening ◽  
Molecular Wires ◽  
Metathesis Polymerization ◽  
Cross Metathesis ◽  
Active Ester

A set of experiments in surface-initiated ring-opening metathesis polymerization, including end-functionalization of growing brushes and contact angle/cyclic voltammetry measurements. We report preparation and CV of two different conjugated polymer films, and several endgroup and sidechain functionalization experiments using cross-metathesis and active ester substitution.<br>

Participation of 19-ester groups in the cleavage of 2α,3α- and 5α,6α-steroid epoxides. A case of competition between participation and external nucleophile attack

1979 ◽  
Vol 44 (5) ◽  
pp. 1496-1509 ◽  
Author(s):  
Pavel Kočovský ◽  
Václav Černý
Keyword(s):  
Perchloric Acid ◽  
Hydrobromic Acid ◽  
Ester Group ◽  
Carbonyl Oxygen ◽  
Cyclic Carbonate ◽  
Cyclic Ether ◽  
Normal Reaction ◽  
Neighboring Group ◽  
Ether Oxygen ◽  
The Difference

Acid cleavage of the acetoxy epoxide IIIa with aqueous perchloric acid or hydrobromic acid gave two types of products, i.e. the diol Va or the bromohydrin VIa, and the cyclic ether VIII. The latter compound arises by participation of ether oxygen of the ester group. On reaction with perchloric acid the epoxide IVa gave the diol XIIIa as a product of a normal reaction and the isomeric diol Xa as a product arising by intramolecular participation of the carbonyl oxygen of the 19-acetoxy group. Participation of the 19-ester group is confirmed by the formation of the cyclic carbonate XI when the 19-carbonate IVb is treated analogously. On reaction with hydrobromic acid, the epoxide IVa gave solely the bromohydrin XIVa as a product of the normal reaction course. Discussed is the similarity of these reactions with electrophilic additions to the related 19-acetoxy olefins I and II, the mechanism, the difference in behavior of both epoxides III and IV, the dependence of the product ratio on the nucleophility of the attacking species, and the competition between participation of an ambident neighboring group and an external nucleophile attack.

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