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Volumn 46, Issue 8, 2008, Pages 2721-2733

Iterative tandem catalysis of racemic AB monomers

Author keywords

Enzymes; Polyesters; Racemization catalyst; Stereospecific polymers; Tandem catalysis

Indexed keywords

CATALYSIS; ESTERS; MONOMERS; POLYESTERS;

EID: 41749088903     PISSN: 0887624X     EISSN: 10990518     Source Type: Journal    
DOI: 10.1002/pola.22605     Document Type: Article
Times cited : (21)

References (42)
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    • For DKR of amines see: a
    • For DKR of amines see: (a) Reetz, M. T.; Schimossek, K.; Chimia 1996, 50, 668-669;
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    • Reetz, M.T.1    Schimossek, K.2
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    • Choi, Y. K.; Kim, M. J.; Ahn, Y.; Kim, M. J. Org Lett 2001, 3, 4099-4101;
    • (b) Choi, Y. K.; Kim, M. J.; Ahn, Y.; Kim, M. J. Org Lett 2001, 3, 4099-4101;
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    • Verzijl, G. K. M.; De Vries, J. G.; Broxterman Q. B. PCT Int Appl WO2001090396, 2001.
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    • Chen, C. S.; Fujimoto, Y.; Girdaukas, G.; Sih, C. J. J Am Chem Soc 1982, 104, 7294-7299.
    • Chen, C. S.; Fujimoto, Y.; Girdaukas, G.; Sih, C. J. J Am Chem Soc 1982, 104, 7294-7299.
  • 32
    • 41749100479 scopus 로고    scopus 로고
    • To avoid confusion in the nomenclature of the polymers obtained from the ITC of the racemic hydroxy-esters and to remain consistent with our previously described polymers (see ref. 11, we decided to take the corresponding lactone as the monomer unit. Therefore the polymers corresponding to Me-6HH, Me-7HO, Me-8HN and Me-13HT are respectively poly(6-methyl-ε-caprolactone, poly(6MeCL, poly(7-methylheptanolactone, poly(7-MeHL, poly(8- methyloctanolactone, poly(8-MeOL, and poly(13-methyltridecanolactone, poly13-MeTL
    • To avoid confusion in the nomenclature of the polymers obtained from the ITC of the racemic hydroxy-esters and to remain consistent with our previously described polymers (see ref. 11), we decided to take the corresponding lactone as the monomer unit. Therefore the polymers corresponding to Me-6HH, Me-7HO, Me-8HN and Me-13HT are respectively poly(6-methyl-ε-caprolactone) (poly(6MeCL)), poly(7-methylheptanolactone) (poly(7-MeHL)), poly(8- methyloctanolactone) (poly(8-MeOL)) and poly(13-methyltridecanolactone) (poly(13-MeTL)).
  • 34
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    • for Me-6HH, Me-7HO, and Me-8HN; The monomers described in the study have been prepared previously via other synthetic approaches: See a
    • The monomers described in the study have been prepared previously via other synthetic approaches: See (a) Fouque, E.; Rousseau, G. Synthesis 1989, 661-666 for Me-6HH, Me-7HO, and Me-8HN;
    • (1989) Synthesis , pp. 661-666
    • Fouque, E.1    Rousseau, G.2
  • 36
    • 0348048814 scopus 로고    scopus 로고
    • Hasdemir, B.; Yusufoǧlu, A. Tetrahedron Asym 2004, 15, 65-68 for Me-13HT. The analytical data presented here are consistent with previously published data.
    • (c) Hasdemir, B.; Yusufoǧlu, A. Tetrahedron Asym 2004, 15, 65-68 for Me-13HT. The analytical data presented here are consistent with previously published data.
  • 39
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    • Carother's formula: degree of polymerization, 1/1 -conversion
    • Carother's formula: degree of polymerization = 1/(1 -conversion).
  • 40
    • 41749108504 scopus 로고    scopus 로고
    • Since the rate of the reaction is determined by the racemization catalyst, increasing the amount of Novozym 435 does not lead to a faster reaction.
    • Since the rate of the reaction is determined by the racemization catalyst, increasing the amount of Novozym 435 does not lead to a faster reaction.
  • 42
    • 41749101625 scopus 로고    scopus 로고
    • The use of racemization catalysts that do require the addition of a base lead consistently to deactivation of Novozym 435 in ITC reactions. The exact reason for this deactivation is currently unclear
    • The use of racemization catalysts that do require the addition of a base lead consistently to deactivation of Novozym 435 in ITC reactions. The exact reason for this deactivation is currently unclear.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.