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Titolo:
ASYMMETRIC ANIONIC-POLYMERIZATION OF ALKYL-SUBSTITUTED N,N-DIPHENYLACRYLAMIDE DERIVATIVES
Autore:
SHIOHARA K; HABAUE S; OKAMOTO Y;
Indirizzi:
NAGOYA UNIV,GRAD SCH ENGN,DEPT APPL CHEM NAGOYA AICHI 46401 JAPAN NAGOYA UNIV,GRAD SCH ENGN,DEPT APPL CHEM NAGOYA AICHI 46401 JAPAN
Titolo Testata:
Polymer Journal
fascicolo: 3, volume: 30, anno: 1998,
pagine: 249 - 255
SICI:
0032-3896(1998)30:3<249:AAOAN>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
N,N-DISUBSTITUTED ACRYLAMIDES;
Keywords:
ASYMMETRIC ANIONIC POLYMERIZATION; OPTICALLY ACTIVE POLYMER; N,N-DIPHENYLACRYLAMIDE; (-)-SPARTEINE; TACTICITY; HELIX;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
8
Recensione:
Indirizzi per estratti:
Citazione:
K. Shiohara et al., "ASYMMETRIC ANIONIC-POLYMERIZATION OF ALKYL-SUBSTITUTED N,N-DIPHENYLACRYLAMIDE DERIVATIVES", Polymer Journal, 30(3), 1998, pp. 249-255

Abstract

Five novel N,N-diphenylacrylamide derivatives bearing alkyl groups ona phenyl group were synthesized and polymerized with a chiral anionicinitiator, the complex of (-)-sparteine and fluorenyllithium, in toluene at low temperature. Both position and size of the alkyl-substituents greatly affected the tacticity and optical activity of the polymer obtained. N,N-Di-4-tolylacrylamide gave a polymer possessing the highest isotacticity (m = 72%) and specific rotation ([alpha](365)(25) = -423 degrees) which may be attributed to the chiral conformation of the main-chain. The asymmetric anionic polymerization of N-phenyl-N-(4-tolyl)acrylamide gave a chloroform-soluble polymer which was found to contain a polymer of high specific rotation([alpha](365)(25) = -1122 degrees) and isotacticity (m = 94%) through fractionation by GPC.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 16:29:45