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Published TCIMAIL newest issue No.201
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CAS RN: 659-18-7 | Product Number: T3010
Tris(2,2,2-trifluoroethyl) Borate
Purity: >95.0%(T)
Synonyms:
- Boric Acid Tris(2,2,2-trifluoroethyl) Ester
Product Documents:
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| Product Number | T3010 |
Purity / Analysis Method
|
>95.0%(T) |
| Molecular Formula / Molecular Weight | C__6H__6BF__9O__3 = 307.91 |
| Physical State (20 deg.C) | Liquid |
Storage Temperature
|
Room Temperature (Recommended in a cool and dark place, <15°C) |
| Store Under Inert Gas | Store under inert gas |
| Condition to Avoid | Moisture Sensitive |
| CAS RN | 659-18-7 |
| Reaxys Registry Number | 1714040 |
| PubChem Substance ID | 253659909 |
| MDL Number | MFCD00093768 |
Specifications
| Appearance | Colorless to Almost colorless clear liquid |
| Purity(Neutralization titration) | min. 95.0 % |
Properties (reference)
| Boiling Point | 125 °C |
| Specific Gravity (20/20) | 1.44 |
| Refractive Index | 1.30 |
GHS
Related Laws:
Transport Information:
| HS Number | 2920907090 |
Application
Direct Amidation of Unprotected Amino Acids

Experimental procedure:
A solution of tris(2,2,2-trifluoroethyl) borate (3.0 mmol, 3.0 eq.) in CPME (1 mL) is added dropwise to a mixture of an unprotected amino acid (1.0 mmol, 1.0 eq.) and propylamine (3.0 mmol, 3.0 eq.) in CPME (1 mL) over 1 h at 80 °C or 125 °C. The resulting mixture is stirred for 5 - 15 h. Upon completion, the mixture is diluted with EtOAc or CH2Cl2 (3 mL) and water (0.5 mL). Amberlite IRA-743 and Amberlyst A-26(OH) are added and stirred for 30 min. The mixture is dried over MgSO4 and then filtered. The solids are washed with EtOAc (3 × 20 mL) and the product concentrated in vacuo. The volatile propylamine is removed in vacuo by the addition of CHCl3 to get the clean product.
A solution of tris(2,2,2-trifluoroethyl) borate (3.0 mmol, 3.0 eq.) in CPME (1 mL) is added dropwise to a mixture of an unprotected amino acid (1.0 mmol, 1.0 eq.) and propylamine (3.0 mmol, 3.0 eq.) in CPME (1 mL) over 1 h at 80 °C or 125 °C. The resulting mixture is stirred for 5 - 15 h. Upon completion, the mixture is diluted with EtOAc or CH2Cl2 (3 mL) and water (0.5 mL). Amberlite IRA-743 and Amberlyst A-26(OH) are added and stirred for 30 min. The mixture is dried over MgSO4 and then filtered. The solids are washed with EtOAc (3 × 20 mL) and the product concentrated in vacuo. The volatile propylamine is removed in vacuo by the addition of CHCl3 to get the clean product.
References
- Direct amidation of unprotected amino acids using B(OCH2CF3)3
PubMed Literature
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