219126
β-丁内酯
98%
别名:
β-甲基-β-丙内酯, 3-羟基丁酸 β-内酯, 4-甲基-β-丙酰内酯
质量水平
方案
98%
折射率
n20/D 1.411 (lit.)
沸点
71-73 °C/29 mmHg (lit.)
mp
−43.5 °C (lit.)
密度
1.056 g/mL at 25 °C (lit.)
官能团
ester
SMILES字符串
CC1CC(=O)O1
InChI
1S/C4H6O2/c1-3-2-4(5)6-3/h3H,2H2,1H3
InChI key
GSCLMSFRWBPUSK-UHFFFAOYSA-N
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一般描述
β-丁内酯在乙氧基桥连双核铟催化剂存在下进行开环聚合，得到可生物降解的聚酯聚羟基丁酸酯。外消旋手性引发剂存在下的β-丁内酯聚合已有报道。它是有机合成的通用构件。
应用
β-丁内酯用于阴离子聚合制备（3-O-\ [olig-（3-羟基丁酸酯）] 荧光素，聚（3-羟基丁酸酯）的荧光素衍生物 。
警示用语：
Warning
危险分类
Carc. 2 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2
储存分类代码
3 - Flammable liquids
WGK
WGK 3
闪点(°F)
140.0 °F - closed cup
闪点(°C)
60 °C - closed cup
个人防护装备
Eyeshields, Gloves, type ABEK (EN14387) respirator filter
法规信息
危险化学品
此项目有
Y Hori et al.
International journal of biological macromolecules, 25(1-3), 237-245 (1999-07-23)
The mechanism of the ring-opening polymerisation of beta-butyrolactones was studied. The ring-opening polymerisation of BL catatlysed by distannoxane complexes is of a living nature. The polymerisation of racemic BL gave a predominantly syndiotactic P(3HB). The temperature effect on syndiospecificity was
Valentin Poirier et al.
Dalton transactions (Cambridge, England : 2003), (44)(44), 9820-9827 (2009-11-04)
A new heteroleptic ethyl-zinc complex stabilized by a chelating bis(morpholinomethyl)phenoxy ligand has been synthesised and shown to be a highly potent initiator for the immortal ring-opening polymerisation (ROP) of lactide and beta-butyrolactone, being able to convert up to 50,000 equiv.
Noureddine Ajellal et al.
Dalton transactions (Cambridge, England : 2003), 39(36), 8363-8376 (2010-04-29)
This Perspective article summarizes efforts paid in our group to develop efficient metal-based catalysts for the immortal ring-opening polymerization (iROP) of cyclic esters in the presence of large amounts of alcohols (ROH) as chain transfer agents. The catalyst systems reviewed
Variably isotactic poly(hydroxybutyrate) from racemic beta-butyrolactone: microstructure control by achiral chromium(III) salophen complexes.
Manuela Zintl et al.
Angewandte Chemie (International ed. in English), 47(18), 3458-3460 (2008-04-05)
Tatyana V Mahrova et al.
Inorganic chemistry, 48(9), 4258-4266 (2009-04-28)
A series of new yttrium complexes supported by the bulky enediamido dianionic ligand DAB(2-) (DAB(2-) = (2,6-C(6)H(3)iPr(2))NC(Me)=C(Me)N(2,6-C(6)H(3)iPr(2))(2-)), that is, {DAB}Y(THF)(2)(mu-Cl)(2)Li(THF)(2) (1), {DAB}Y(OtBu)(THF)(DME) (2), and {{DAB}Y(BH(4))(2)}{Li(DME)(3)} (3), was synthesized by salt metathesis. The complexes were isolated after recrystallization in 73, 66
Chromatograms
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