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Volumn 38, Issue 17, 2005, Pages 7306-7313

Unexpected side reactions and chain transfer for zinc-catalyzed copolymerization of cyclohexene oxide and carbon dioxide

Author keywords

[No Author keywords available]

Indexed keywords

CARBON DIOXIDE; CATALYSIS; MICROSTRUCTURE; SYNTHESIS (CHEMICAL); WATER; ZINC;

EID: 24944513149     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma050797k     Document Type: Article
Times cited : (80)

References (63)
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    • For example see: (a) Beckman, E. J. Science 1999, 283, 946-947.
    • (1999) Science , vol.283 , pp. 946-947
    • Beckman, E.J.1
  • 45
    • 24944462584 scopus 로고    scopus 로고
    • note
    • Samples were also prepared by removing all the volatiles under vacuum at 80°C for a night prior to dissolution in THF. Both methods were also applied after pretreating the sample with a 10% HCl solution in water to ensure the disruption of catalyst-polymer chain interactions. All samples gave the same results in SEC and MALDI-TOF-MS.
  • 47
    • 20444441213 scopus 로고    scopus 로고
    • In a recent publication, Xiao et al. reported the presence of cyclohexyl but not cyclohexenyl end groups. The resolution of their MALDI-TOF-MS spectra measured in linear mode were too low to distinguish overlapping separate isotope patterns, unlike the reflector mode MALDI-TOF-MS that was used for the spectra in our study. Xiau, Y.; Wang, Z.; Ding, K. Chem. - Eur. J. 2005, 11, 3668-3678.
    • (2005) Chem. - Eur. J. , vol.11 , pp. 3668-3678
    • Xiau, Y.1    Wang, Z.2    Ding, K.3
  • 48
    • 24944482289 scopus 로고    scopus 로고
    • note
    • 2 catalyst (see Experimental Section).
  • 49
    • 24944527244 scopus 로고    scopus 로고
    • note
    • Epoxides can react with strong, nonnucleophilic bases by deprotonation in either the α- or β-position. Abstraction of the α-hydrogen produces allylic alcohols and/or ketones. The β-deprotonation pathway, on the other hand, leads to exclusive formation of allylic alcohols.
  • 54
    • 0036032585 scopus 로고    scopus 로고
    • For some recent papers see: (a) Nishide, K.; Node, M. Chirality 2002, 14, 759-767.
    • (2002) Chirality , vol.14 , pp. 759-767
    • Nishide, K.1    Node, M.2
  • 58
    • 24944560272 scopus 로고    scopus 로고
    • (Millenium speciality chemicals), TPC Pat. Appl. WO2003004448
    • (b) Kolomeyer, G. G.; Oyloe, J. S. (Millenium speciality chemicals), TPC Pat. Appl. WO2003004448, 2003.
    • (2003)
    • Kolomeyer, G.G.1    Oyloe, J.S.2
  • 59
    • 24944467993 scopus 로고    scopus 로고
    • note
    • 2 copolymerization (18 h, 10 bar) carried out in an NMR tube did not give rise to peaks B and C. Since the glass NMR tube is much more easy to dry compared to the 200 mL steel autoclave, the presence of traces of water is assumed to crucial for the formation of peak B and C. More detailed investigation are underway.
  • 62
    • 24944436063 scopus 로고    scopus 로고
    • note
    • 2, 300 μmol of catalyst, and 10 equiv of ethanol.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.