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Synthesis of Macrocycles by the Ring‐crossover Reaction of a Cyclic Dithioester by Hiroto Kudo; Shinya Makino; Tadatomi Nishikubo is a Materials Science article available to read on EtoBox.

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## Abstract The ring‐crossover polymerization of cyclic dithioester **1** was performed in the presence of quaternary onium salts as catalysts at 70–150 °C for 24 h in NMP. It was found that predictable cyclic polymers with the same repeating structures as **1** were obtained with __M__~n~s in the range between 700 and 3,500, quantitatively. It was observed that intermolecular and intramolecular thioester‐exchange reactions proceeded between cyclic monomer **1** and resulting cyclic polymers under thermodynamic control to give a lower‐molecular‐weight cyclic polymer with a lower polydispersity ratio (__M__~n~ = 2,400, __M__~w~/__M__~n~ = 1.70). © 2006Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 680–687, 2007

Who reads Synthesis of Macrocycles by the Ring‐crossover Reaction of a Cyclic Dithioester?

Author

Hiroto Kudo; Shinya Makino; Tadatomi Nishikubo

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0887-624X)

Published

2007

Language

EN

Field

Materials Science (Physical Sciences)