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Titolo:
OPTICALLY-ACTIVE POLYMERS VIA RING-OPENING METATHESIS POLYMERIZATION .2. POLYMERIZATION OF ENANTIOMERICALLY PURE (-)-ENDO-2-NORBORNENYL ACETATE
Autore:
STEINHAUSLER T; STELZER F;
Indirizzi:
GRAZ TECH UNIV,INST CHEM TECHNOL ORGANISCHER STOFFE,CHRISTIAN DOPPLERLAB A-8010 GRAZ AUSTRIA GRAZ TECH UNIV,INST CHEM TECHNOL ORGANISCHER STOFFE,CHRISTIAN DOPPLERLAB A-8010 GRAZ AUSTRIA
Titolo Testata:
Journal of molecular catalysis
fascicolo: 1-2, volume: 90, anno: 1994,
pagine: 53 - 60
SICI:
0304-5102(1994)90:1-2<53:OPVRMP>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Keywords:
METATHESIS; MOLYBDENUM; NORBORNENE DERIVATIVES; POLYMERIZATION; RING OPENING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
T. Steinhausler e F. Stelzer, "OPTICALLY-ACTIVE POLYMERS VIA RING-OPENING METATHESIS POLYMERIZATION .2. POLYMERIZATION OF ENANTIOMERICALLY PURE (-)-ENDO-2-NORBORNENYL ACETATE", Journal of molecular catalysis, 90(1-2), 1994, pp. 53-60

Abstract

(-)-endo-2-Acetoxy-bicyclo [2.2.1]hept-5-ene ((-)-endo-2-norbornenyl acetate) was synthesized from (-)-endo-2-norbornenyl butyrate which was separated from the racemic mixture by enzymatic hydrolysis using Candida cylindracea lipase to provide monomers with high enantiomeric purity (ee > 95%). The monomer was polymerized via ring opening metathesis polymerization (ROMP) using Mo(CH-t-Bu) (NAr) (0-t-Bu) 2 and other similar molybdenum-carbene catalysts in different solvents. All reactions yielded optically active polymers with the specific rotation [alpha]D depending on catalyst and solvent. Spectroscopic data (IR, NMR) of the polymers show the influences of catalysts and solvents on the stereochemistry of the polymerization reaction.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 08:02:40