1,5,7-三氮杂双环[4.4.0]癸-5-烯
化合物
1,5,7-三氮杂双环[4.4.0]癸-5-烯(TBD)是一种桥环胍基强碱,在乙腈中pKa = 25.98,在四氢呋喃中pKa = 21.00。[5]
1,5,7-三氮杂双环[4.4.0]癸-5-烯[1] | |||
---|---|---|---|
| |||
IUPAC名 1,3,4,6,7,8-Hexahydro-2H-pyrimido[1,2-a]pyrimidine | |||
别名 | TBD | ||
识别 | |||
CAS号 | 5807-14-7 [2] | ||
PubChem | 79873 | ||
ChemSpider | 72164 | ||
SMILES |
| ||
InChI |
| ||
InChIKey | FVKFHMNJTHKMRX-UHFFFAOYAP | ||
性质 | |||
化学式 | C7H13N3 | ||
摩尔质量 | 139.2 g·mol−1 | ||
熔点 | 125—130 °C(257—266 °F;398—403 K) | ||
pKa | 15.2 ± 1.0[3] (共軛酸水中的pKa ); 26.03[4] (共軛酸乙腈中的pKa ) | ||
危险性 | |||
警示术语 | R:R34 | ||
安全术语 | S:S26 S36/37/39 S45 | ||
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。 |
反應
參見
參考文獻
- ^ 1,5,7-Triazabicyclo[4.4.0]dec-5-ene 345571. Sigma-Aldrich. [2019-08-29]. (原始内容存档于2016-02-02).
- ^ 5807-14-7 CAS Manufactory. ChemicalBook---Chemical Search Engine. [2019-08-29]. (原始内容存档于2019-08-29).
- ^ Kaupmees, K.; Trummal, A.; Leito, I. Basicities of Strong Bases in Water: A Computational Study. Croat. Chem. Acta. 2014, 87: 385–395. doi:10.5562/cca2472.
- ^ Kaljurand, I.; Kütt, A.; Sooväli, L.; Rodima, T.; Mäemets, V.; Leito, I.; Koppel, I. A. Extension of the Self-Consistent Spectrophotometric Basicity Scale in Acetonitrile to a Full Span of 28 pKa Units: Unification of Different Basicity Scales. J. Org. Chem. 2005, 70: 1019–1028. PMID 15675863. doi:10.1021/jo048252w.
- ^ 5.0 5.1 Huczynski, Adam; Brzezinski, Bogumil, 1,5,7-Triazabicyclo[4.4.0]dec-5-ene, Chichester, UK: John Wiley & Sons, Ltd, 2008-03-14, ISBN 0-471-93623-5, doi:10.1002/047084289x.rn00786
- ^ Sabot, Cyrille; Kumar, Kanduluru Ananda; Meunier, Stéphane; Mioskowski, Charles. A convenient aminolysis of esters catalyzed by 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) under solvent-free conditions. Tetrahedron Lett. 2007: 3863–3866. doi:10.1016/j.tetlet.2007.03.146.
- ^ Pratt, Russell C.; Lohmeijer, Bas G. G.; Long, David A.; Waymouth, Robert M.; Hedrick, James L. Triazabicyclodecene: A Simple Bifunctional Organocatalyst for Acyl Transfer and Ring-Opening Polymerization of Cyclic Esters. 美国化学会志. 2006, 128 (14): 4556–4557. doi:10.1021/ja060662+.
- ^ Reaction specs: 自由基引发剂 4-pyrenebutanol (芘 enables end-group determination by 紫外-可见分光光度法) and 单体 caprolactone added in ratio 1:100, targeted 聚合度 = 100, with TBD cat. 0.5% in 苯; 72% conversion in 8 hours; polydispersity index 1.16
- ^ Huczyński, A.; Binkowska, I.; Jarczewski, A.; Brzezinski, B. Spectroscopic studies of the 1:1 complexes of 4-nitrophenyl(bis(ethylsulfonyl))methane and phenyl(bis(ethylsulfonyl))methane with 7-methyl-1,5,7-triazabicyclo(4.4.0)dec-5-ene and 1,5,7-triazabicyclo(4.4.0)dec-5-ene. J. Mol. Struc. 2007, 841 (1–3): 133–136. doi:10.1016/j.molstruc.2007.01.005.