메뉴 건너뛰기




Volumn 124, Issue 51, 2002, Pages 15239-15248

Single-site β-diiminate zinc catalysts for the ring-opening polymerization of β-butyrolactone and β-valerolactone to poly(3-hydroxyalkanoates)

Author keywords

[No Author keywords available]

Indexed keywords

ZINC ALKOXIDE INITIATOR;

EID: 0037176278     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja020978r     Document Type: Article
Times cited : (391)

References (59)
  • 3
    • 0000965928 scopus 로고
    • Vert, M., Feijen, J., Albertsson, A., Scott, G., Chiellini, E., Eds.; The Royal Society of Chemistry: Cambridge, U.K.
    • Doi, Y.; Kumagai, Y.; Tanahashi, N.; Mukai, K. In Biodegradable Polymers and Plastics; Vert, M., Feijen, J., Albertsson, A., Scott, G., Chiellini, E., Eds.; The Royal Society of Chemistry: Cambridge, U.K., 1992; pp 139-148.
    • (1992) Biodegradable Polymers and Plastics , pp. 139-148
    • Doi, Y.1    Kumagai, Y.2    Tanahashi, N.3    Mukai, K.4
  • 4
    • 0003001856 scopus 로고
    • Vert, M., Feijen, J., Albertsson, A., Scott, G., Chiellini, E., Eds.; The Royal Society of Chemistry: Cambridge, U.K.
    • Cox, M. K. In Biodegradable Polymers and Plastics; Vert, M., Feijen, J., Albertsson, A., Scott, G., Chiellini, E., Eds.; The Royal Society of Chemistry: Cambridge, U.K., 1992; pp 95-99.
    • (1992) Biodegradable Polymers and Plastics , pp. 95-99
    • Cox, M.K.1
  • 7
    • 0001815198 scopus 로고
    • Bassett. D. C., Ed.; Elsevier Applied Science: London
    • Holmes, P. A. In Developments in Crystalline Polymers-2; Bassett. D. C., Ed.; Elsevier Applied Science: London, 1988; pp 1-66.
    • (1988) Developments in Crystalline Polymers-2 , pp. 1-66
    • Holmes, P.A.1
  • 11
    • 0003187371 scopus 로고    scopus 로고
    • PCT Int. Appl., WO 0077072, 2000
    • Schechtman, L. A.; Kemper, J. J. PCT Int. Appl., WO 0077072, 2000; Chem. Abstr. 2001, 134, 57105.
    • (2001) Chem. Abstr. , vol.134 , pp. 57105
    • Schechtman, L.A.1    Kemper, J.J.2
  • 12
    • 0347087838 scopus 로고
    • PCT Int. Appl., WO 9520616, 1995
    • Schechtman, L. A.; Kemper, J. J. PCT Int. Appl., WO 9520616, 1995; Chem. Abstr. 1995, 124, 9719.
    • (1995) Chem. Abstr. , vol.124 , pp. 9719
    • Schechtman, L.A.1    Kemper, J.J.2
  • 13
    • 0033089594 scopus 로고    scopus 로고
    • Am. Chem. Soc., Div. Polym. Chem.
    • Schechtman, L. A.; Kemper, J. J. Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.) 1999, 217, 508-509.
    • (1999) Polym. Prepr. , vol.217 , pp. 508-509
    • Schechtman, L.A.1    Kemper, J.J.2
  • 31
    • 0037140702 scopus 로고    scopus 로고
    • For other recent work on the polymerization of lactide with β-diiminate metal alkoxides, see: (a) Chisholm, M. H.; Gallucci, J.; Phomphrai, K. Inorg. Chem. 2002, 41, 2785-2794.
    • (2002) Inorg. Chem. , vol.41 , pp. 2785-2794
    • Chisholm, M.H.1    Gallucci, J.2    Phomphrai, K.3
  • 39
    • 0346457519 scopus 로고    scopus 로고
    • note
    • In general, GPC number-average molecular weights do not correspond well with calculated theoretical molecular weights. In fact, for low [BBL]/[Zn] ratios (e.g., entry 1), GPC molecular weights are somewhat higher than calculated molecular weights, even though initiaton appears to be very fast and efficient for 1a (see Initiation). We tentatively attribute this mismatch to poor correlation between the polystyrene calibration of the GPC and the actual molecular weights of the PHB chains. However, as the [BBL]/ [Zn] ratio increases. GPC molecular weights do not grow proportionately. This could also be partly attributable to the GPC calibration, but there is evidence that side reactions play a role in this unexpected behavior.
  • 44
    • 0347087835 scopus 로고    scopus 로고
    • PCT Int. Appl., WO 0037544, 2000
    • Noda, I. PCT Int. Appl., WO 0037544, 2000; Chem. Abstr. 2000, 133, 75001.
    • (2000) Chem Abstr. , vol.133 , pp. 75001
    • Noda, I.1
  • 45
    • 0346457516 scopus 로고    scopus 로고
    • U.S. Patent 6,077,931, 2000
    • Noda, I. U.S. Patent 6,077,931, 2000; Chem. Abstr. 2000, 133, 59245.
    • (2000) Chem Abstr. , vol.133 , pp. 59245
    • Noda, I.1
  • 46
    • 0347718232 scopus 로고    scopus 로고
    • note
    • n = 320 000 and PDI = 1.59. We are in the process of optimizing this reaction.
  • 49
    • 0001244737 scopus 로고    scopus 로고
    • Pct Int. Appl. WO 0008088, 2000
    • Coates, G. W.; Cheng, M. PCT Int. Appl., WO 0008088, 2000; Chem Abstr. 2000, 132, 152332.
    • (2000) Chem Abstr. , vol.132 , pp. 152332
    • Coates, G.W.1    Cheng, M.2
  • 50
    • 0346457474 scopus 로고    scopus 로고
    • Ph.D. Thesis, Cornell University
    • Cheng, M. Ph.D. Thesis, Cornell University, 2000.
    • (2000)
    • Cheng, M.1
  • 51
    • 0345826467 scopus 로고    scopus 로고
    • note
    • The variable temperature NMR data described in the text were combined with an additional set of spectra recorded at 5 °C intervals from 25 °C to 5 °C with the same sample.
  • 52
    • 0347718197 scopus 로고    scopus 로고
    • note
    • Interestingly, we had previously found an order in [Zn] of 1.56 for the polymerization of rac-lactide by 1a; see ref 29. We are currently seeking to understand the reason we obtained a higher order in catalyst for a seemingly similar polymerization.
  • 59
    • 0345826424 scopus 로고    scopus 로고
    • note
    • n = 43000.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.