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Volumn 32, Issue 20, 1999, Pages 6450-6460

Synthesis of well-defined functionalized polystyrenes with a definite number of chloromethylphenyl groups at chain ends or in chains by means of anionic living polymerization in conjunction with functional group transformation

Author keywords

[No Author keywords available]

Indexed keywords

ANIONIC POLYMERIZATION; FRACTIONATION; HIGH PERFORMANCE LIQUID CHROMATOGRAPHY; MOLECULAR STRUCTURE; MOLECULAR WEIGHT DISTRIBUTION; SYNTHESIS (CHEMICAL);

EID: 0032595998     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma990618x     Document Type: Article
Times cited : (71)

References (43)
  • 38
    • 85034513181 scopus 로고    scopus 로고
    • Unpublished results. Interestingly, under similar conditions in a mixed solvent of THF-heptane (1/1, v/v) at -78 °C, polyisoprenyllithium was reacted with a,a'dichloro-p-xylene more efficiently to afford a polyispprene with chloromethylphenyl terminus in 91% yield. In this case, the dimer was formed only in 9% yield.
    • Hirao, A.; Inaba, T. Unpublished results. Interestingly, under similar conditions in a mixed solvent of THF-heptane (1/1, v/v) at -78 °C, polyisoprenyllithium was reacted with a,a'dichloro-p-xylene more efficiently to afford a polyispprene with chloromethylphenyl terminus in 91% yield. In this case, the dimer was formed only in 9% yield.
    • Hirao, A.1    Inaba, T.2
  • 39
    • 85034519140 scopus 로고    scopus 로고
    • Unpublished results. No polymerization of p-methoxymethylstyrene occurred in THF at -78 °C with each of these anionic initiators including lithium and potassium naphthalenides, s-BuLi. In contrast, the meta isomer was found to undergo anionic living polymerization under the same conditions. For example, poly(m-methoxymethylstyrene) was obtained quantitatively with potassium naphthalenide in THF at -78 °C for 30 min. The observed and calculated values of Mn and Mw/Mn were 10 000,11 000, and 1.08, respectively.
    • Hirao, A.; Negishi, Y. Unpublished results. No polymerization of p-methoxymethylstyrene occurred in THF at -78 °C with each of these anionic initiators including lithium and potassium naphthalenides, s-BuLi. In contrast, the meta isomer was found to undergo anionic living polymerization under the same conditions. For example, poly(m-methoxymethylstyrene) was obtained quantitatively with potassium naphthalenide in THF at -78 °C for 30 min. The observed and calculated values of Mn and Mw/Mn were 10 000,11 000, and 1.08, respectively.
    • Hirao, A.1    Negishi, Y.2
  • 43
    • 85034494520 scopus 로고    scopus 로고
    • A polystyrene having two MMP termini and one bromobutyl terminus was also obtained by reacting polystyryllithium with 3 followed by treatment with a 10-fold excess of 1,4dibromobutane in THF at - 78 °C.
    • A polystyrene having two MMP termini and one bromobutyl terminus was also obtained by reacting polystyryllithium with 3 followed by treatment with a 10-fold excess of 1,4dibromobutane in THF at - 78 °C.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.