Stereochemical control in the anionic polymerization of beta-butyrolactone initiated with alkali-metal alkoxides

被引：73

作者：

Jedlinski, Z

Kowalczuk, M

Kurcok, P

Adamus, G

Matuszowicz, A

Sikorska, W

Gross, RA

Xu, J

Lenz, RW

机构：

[1] UNIV MASSACHUSETTS,DEPT CHEM,LOWELL,MA 01854

[2] UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,AMHERST,MA 01003

来源：

MACROMOLECULES | 1996年 / 29卷 / 11期

关键词：

D O I：

10.1021/ma951888s

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The anionic polymerization of (R)-beta-butyrolactone initiated with either 18-crown-6 complexes of a potassium alkoxide or a simple carboxylate (reference initiator) proceeded with inversion of configuration. As a result (R)-beta-butyrolactone formed an isotactic poly((S)-beta-hydroxybutyrate) with these initiators at room temperature. Polymerization of (R,S)-beta-butyrolactone under the same conditions gave an atactic polymer, but at lower temperatures the predominantly syndiotactic form of poly((R,S)-beta-hydroxybutyrate) was produced from the racemic monomer.

引用

收藏

页码：3773 / 3777

页数：5

相关论文

共 34 条

[1] PHYSICAL-PROPERTIES AND ENZYMATIC DEGRADABILITY OF POLYMER BLENDS OF BACTERIAL POLY[(R)-3-HYDROXYBUTYRATE] AND POLY[(R,S)-3-HYDROXYBUTYRATE] STEREOISOMERS [J].

ABE, H ;

MATSUBARA, I ;

DOI, Y .

MACROMOLECULES, 1995, 28 (04) :844-853

[2] POLYSTEREOISOMERS WITH 2 STEREOGENIC CENTERS OF MALIC-ACID 2-METHYLBUTYL ESTER CONFIGURATIONAL STRUCTURE/PROPERTIES RELATIONSHIP [J].

BOUTAULT, K ;

CAMMAS, S ;

HUET, F ;

GUERIN, P .

MACROMOLECULES, 1995, 28 (10) :3516-3520

[3] EFFECT OF WATER ON THE ANIONIC-POLYMERIZATION OF ALPHA-METHYL-ALPHA-N-PROPYL-BETA-PROPIOLACTONE [J].

CAMPS, M ;

AITHAMOUDA, R ;

BOILEAU, S ;

HEMERY, P ;

LENZ, RW .

MACROMOLECULES, 1988, 21 (04) :891-894

[4]

Doi Y., 1990, MICROBIAL POLYESTERS

[5] SYNDIOTACTIC POLY[(R,S)-BETA-HYDROXYBUTYRATE]ISOLATED FROM METHYLALUMINOXANE-CATALYZED POLYMERIZATION [J].

HOCKING, PJ ;

MARCHESSAULT, RH .

POLYMER BULLETIN, 1993, 30 (02) :163-170

[6]

HOFMAN A, 1984, MAKROMOL CHEM, V185, P91

[7] RING-OPENING POLYMERIZATION OF OPTICALLY-ACTIVE BETA-BUTYROLACTONE USING DISTANNOXANE CATALYSTS - SYNTHESIS OF HIGH-MOLECULAR-WEIGHT POLY(3-HYDROXYBUTYRATE) [J].

HORI, Y ;

SUZUKI, M ;

YAMAGUCHI, A ;

NISHISHITA, T .

MACROMOLECULES, 1993, 26 (20) :5533-5534

[8] C-13-NMR SPECTROSCOPY OF POLY(BETA-SUBSTITUTED BETA-PROPIOLACTONE)S - TACTICITY RECOGNITION IN 1,5-SUBSTITUTED POLYMER SYSTEM AND STEREOSPECIFIC CONTACT OF SHIFT-REAGENT [J].

IIDA, M ;

HAYASE, S ;

ARAKI, T .

MACROMOLECULES, 1978, 11 (03) :490-493

[9] WHAT IS THE REAL MECHANISM OF ANIONIC-POLYMERIZATION OF BETA-LACTONES BY POTASSIUM ALKOXIDES - A CRITICAL APPROACH [J].

JEDLINSKI, Z ;

KOWALCZUK, M ;

KURCOK, P .

MACROMOLECULES, 1991, 24 (05) :1218-1219

[10] NOVEL POLYMERIZATION OF BETA-BUTYROLACTONE INITIATED BY POTASSIUM NAPHTHALENIDE IN THE PRESENCE OF A CROWN-ETHER OR A CRYPTAND [J].

JEDLINSKI, Z ;

KOWALCZUK, M ;

GLOWKOWSKI, W ;

GROBELNY, J ;

SZWARC, M .

MACROMOLECULES, 1991, 24 (02) :349-352

← 1 2 3 4 →