Quaternary salt formation of optically active helical polymethacrylates having pyridyl group in the side chain

Autor:	Tamaki Nakano, Yoshio Okamoto, Youichi Satoh
Rok vydání:	1999
Předmět:	chemistry.chemical_classification Polymers and Plastics General Chemical Engineering Chemical modification General Chemistry Polymer Methacrylate Biochemistry Polyelectrolyte chemistry Group (periodic table) Helix Polymer chemistry Materials Chemistry Side chain Environmental Chemistry Molecule
Zdroj:	Reactive and Functional Polymers. 40:135-141
ISSN:	1381-5148
DOI:	10.1016/s1381-5148(98)00020-0
Popis:	The reaction of diphenyl-3-pyridylmethyl and 1-(3-pyridyl)dibenzosuberyl methacrylates with CH 3 I in CHCl 3 at 35°C for 24 h lead to quantitative quaternization of pyridyl group while the reaction using diphenyl-2-pyridylmethyl and 1-(2-pyridyl)dibenzosuberyl methacrylates gave only low degree of quaternization. Single-handed helical poly(diphenyl-3-pyridylmethyl) and poly[1-(3-pyridyl)dibenzosuberyl methacrylate] were also quantitatively quaternized with CH 3 I under the above reaction conditions: the former polymer appeared to lose its helical conformation and the chiroptical properties through the reaction while the conformation of the latter polymer seems to survive the quaternization process. The latter polymer quantitatively reacted with decyl and octadecyl iodides in a CHCl 3 –DMSO mixture at 55°C to give hairy rod molecules.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f63f88c2196b22a0e306c1852755e8b4 https://doi.org/10.1016/s1381-5148(98)00020-0 Zobrazit plný text záznamu Full Text from ScienceDirect