2,8,9-Tri-i-butyl-2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane
Synonym(s):Triisobutylphosphatrane
- CAS NO.：331465-71-5
- Empirical Formula: C18H39N4P
- Molecular Weight: 342.5
- MDL number: MFCD03840347
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 02:53:04
![2,8,9-Tri-i-butyl-2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane Structural](https://img.chemicalbook.in/CAS/GIF/331465-71-5.gif)
What is 2,8,9-Tri-i-butyl-2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane?
Chemical properties
Clear colorless to yellow liquid
The Uses of 2,8,9-Tri-i-butyl-2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane
Triisobutylazaphosphatrane is reported to be used as a catalyst for the preparation of biaryl and alkenylarenes via Stille cross-coupling reaction. It also acts a catalyst for the synthesis of α-aryl-substituted nitriles.
Properties of 2,8,9-Tri-i-butyl-2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane
| Boiling point: | 397.4±41.0 °C(Predicted) |
| Density | 0.964 g/mL at 25 °C(lit.) |
| refractive index | n |
| Flash point: | 155 °F |
| storage temp. | under inert gas (nitrogen or Argon) at 2-8°C |
| pka | 8.90±0.20(Predicted) |
| form | Liquid |
| color | Clear colorless to yellow |
| Sensitive | air sensitive, moisture sensitive |
Safety information for 2,8,9-Tri-i-butyl-2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H225:Flammable liquids H302:Acute toxicity,oral H319:Serious eye damage/eye irritation H336:Specific target organ toxicity,single exposure; Narcotic effects |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 2,8,9-Tri-i-butyl-2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane
New Products
Cyclobutanone (R)-(-)-2-Amino-1-propanol Fmoc-OSu 5-bromo-4-fluoro-2-nitrobenzaldehyde 2-Amino-2-(4-methylphenyl)acetic acid 1-(2-Chloroethyl)pyrrolidine Hydrochloride 2,4-Dihydroxybenzaldehyde Obidoxime hydrochloride API Pyrrolo[1,2-a]pyrimidine-6-carboxylic acid, 4,6,7,8-tetrahydro-4-oxo-, sodium salt (1:1), (6S) Dipropyl disulfide N-Vinylformamide 4 pentyn 1 ol Methacrylate-PEG-Methacrylate, Mn:35000 2,4-Dihydroxyacetophenone 2-Chloro 5-Fluoro Pyridine Vasicinone 2-Chloroisonicotinic Acid Tween 80 or Polysorbate 80 2-Butyn-1-oL N-(4-fluoro-2-methoxy-5-nitrophenyl)-4-(1-methyl-1H-indol-3-yl)pyrimidin-2-amine Pirtobrutinib intd. 2-Pentyn-1-oL 4-Nitrobenzotrifluoride N-(4-Cyano-3-(trifluoromethyl)phenyl)-2-methyloxirane-2-carboxamideRelated products of tetrahydrofuran
![2,8,9-TRIMETHYL-2,5,8,9-TETRAAZA-1-PHOSPHABICYCLO[3.3.3]UNDECANE](https://img.chemicalbook.in/CAS/GIF/120666-13-9.gif)
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