Published TCIMAIL newest issue No.199
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| Product Number | D1303 |
Purity / Analysis Method
|
>98.0%(N) |
| Molecular Formula / Molecular Weight | C__1__1H__2__5NO__2 = 203.33 |
| 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 |
Packaging and Container
|
25ML-Vial (View image), 5ML-Vial (View image) |
| CAS RN | 36805-97-7 |
| Reaxys Registry Number | 969629 |
| PubChem Substance ID | 87567826 |
| SDBS (AIST Spectral DB) | 7968 |
| MDL Number | MFCD00015002 |
| Appearance | Colorless to Almost colorless clear liquid |
| Purity(with Total Nitrogen) | min. 98.0 % |
| Effect test of GC derivalization | Effective as derivatization agent Myristic Acid |
| NMR | confirm to structure |
| Boiling Point | 57 °C/8 mmHg |
| Flash point | 33 °C |
| Specific Gravity (20/20) | 0.85 |
| Refractive Index | 1.41 |
| Pictogram |
|
| Signal Word | Warning |
| Hazard Statements | H315 : Causes skin irritation. H319 : Causes serious eye irritation. H226 : Flammable liquid and vapour. |
| Precautionary Statements | P210 : Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection/ hearing protection. P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish. P337 + P313 : If eye irritation persists: Get medical advice/ attention. P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water. |
| EC Number | 253-222-7 |
| UN Number | UN1993 |
| Class | 3 |
| Packing Group | III |
| HS Number | 2922500090 |
To a solution of N-acetyl-L-phenylalanine (1.0 g, 4.78 mmol) in DMF di-tert-butyl acetal (6.9 mL, 28.7 mmol, 6.0 eq.) was stirred at 60 °C for overnight. The solvent was removed under reduced pressure and the residue was purified by column chromatography (ethyl acetate:hexane = 1:1 on silica gel), giving tert-butyl acetyl-L-phenylalaninate as a colorless oil (1.20 g, 94% yield).
The reaction mixture was monitored by UPLC.
tert-Butyl Acetyl-L-phenylalaninate
1H NMR (400 MHz, CDCl3); δ 7.28–7.19 (m, 3H), 7.13-7.11 (m, 2H), 5.92 (br d, 1H, J = 7.6 Hz), 4.76–4.71 (m, 1H), 3.07 (d, 2H, J = 6.0 Hz), 1.96 (s, 3H), 1.38 (s, 9H).

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