Published TCIMAIL newest issue No.197
Maximum quantity allowed is 999
CAS RN: 4525-65-9 | Producten #: T3121
2,4,6-Trichlorophenyl Formate
Zuiverheid: >97.0%(HPLC)
- Formic Acid 2,4,6-Trichlorophenyl Ester
Afmeting | Eenheidsprijs | België | Japan* | Hoeveelheid |
---|---|---|---|---|
1G |
€25.00
|
1 | 9 |
|
5G |
€80.00
|
1 | ≥80 |
|
*Stock beschikbaar uit voorraad in België leverbaar in 1 tot 3 dagen
*stock beschikbaar uit voorraad in Japan leverbaar in 1 tot 2 weken (met uitzondering van gereguleerde producten en zendingen met droog ijs)
Artikel # | T3121 |
Zuiverheid / Analysemethode | >97.0%(HPLC) |
Moleculaire formule / molecuulgewicht | C__7H__3Cl__3O__2 = 225.45 |
Fysieke toestand (20 graden C) | Solid |
Opslag condities | Room Temperature (Recommended in a cool and dark place, <15°C) |
Verpakking | 1G-Glass Bottle with Plastic Insert (Bekijk afbeelding) |
CAS RN | 4525-65-9 |
Reaxys registratienummer | 2524466 |
PubChem product ID | 253661984 |
Appearance | White to Almost white powder to crystal |
Purity(HPLC) | min. 97.0 area% |
Purity(Argentometric Titration) | min. 95.0 % |
Melting point | 81.0 to 85.0 °C |
Smeltpunt | 83 °C |
Oplosbaarheid (oplosbaar in) | Toluene |
HS-NR (invoer / uitvoer) (TCI-E) | 2915130090 |
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Used Chemicals
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Procedure
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A solution of 2-iodofluorene (500 mg, 1.71 mmol), 2,4,6-trichlorophenyl formate (579 mg, 2.57 mmol), palladium(II) acetate (38.4 mg, 0.171 mmol), Xantphos (198 mg, 0.342 mmol) and triethylamine (470 µL, 3.42 mmol) in toluene (10 mL) was stirred at room temperature for 24 hours. The solvent was removed under reduced pressure and the residue was washed with acetonitrile to give 1 as a pale yellow solid (462 mg, 69% yield).
A solution of 1 (460 mg, 1.18 mmol), triethylamine (330 µL, 2.36 mmol), DMAP (7.2 mg, 59 µmol) and morpholine (154 µL, 1.77 mmol) in THF (5 mL) was stirred at 45 °C for 20 hours. The reaction was quenched with water and the aqueous layer was extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and filtered. The solvent was removed under reduced pressure and the residue was purified by silica gel column chromatography (ethyl acetate:hexane = 0:100 - 50:50) to give 2 as a white solid (305 mg, 93% yield).
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Experimenter’s Comments
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The reaction mixture at the first step was monitored by TLC (hexane:ethyl acetate = 1:19, Rf = 0.34).
The reaction mixture at the second step was monitored by TLC (hexane:ethyl acetate = 1:1, Rf = 0.26).
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Analytical Data
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2,4,6-Trichlorophenyl 9H-Fluorene-2-carboxylate (1)
(9H-Fluoren-2-yl)(morpholino)methanone (2)1H NMR (400 MHz, CDCl3);
(1) δ 8.41 (s, 1H), 8.29 (d, J = 8.1 Hz, 1H), 7.94-7.88 (m, 2H), 7.62 (d, J = 6.2 Hz, 1H), 7.48–7.38 (m, 4H), 4.02 (s, 2H).
(2) δ 7.81 (d, J = 7.6 Hz, 2H), 7.62-7.56 (m, 2H), 7.43-7.32 (m, 3H), 3.94 (s, 2H), 3.72 (brs, 8H). -
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Lead Reference
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- Trichlorophenyl Formate: Highly Reactive and Easily Accessible Crystalline CO Surrogate for Palladium-Catalyzed Carbonylation of Aryl/Alkenyl Halides and Triflates.
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Other References
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- Pd-Catalyzed External-CO-Free Carbonylation: Preparation of 2,4,6-Trichlorophenyl 3,4-Dihydronaphthalene-2-Carboxylate
- Formic Acid Derivatives as Practical Carbon Monoxide Surrogates for Metal-Catalyzed Carbonylation Reactions
References
- 1)T. Ueda, H. Konishi, K. Manabe, Org. Lett. 2012, 14, 5370.
- 2)H. Konishi, T. Ueda, K. Manabe, Org. Synth. 2014, 91, 39.
- 3)H. Konishi, K. Manabe, Synlett 2014, 25, 1971.
Artikelen / Brochures
[TCI Practical Example] Introduction of Carbonyl Group by Using 2,4,6-Trichlorophenyl Formate
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