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Published TCIMAIL newest issue No.199
Maximum quantity allowed is 999
| Taille | Prix unitaire | Belgique | Japon * | Quantité |
Informations d'expédition
|
|---|---|---|---|---|---|
| 10EACH |
85,00 €
|
Contactez-nous | 19 |
|
*Stock disponible en Belgique : Expédition le jour même
*Stock disponible au Japon : Veuillez consulter la simulation d'expédition pour une estimation des délais d'expédition (hors articles réglementés et expédition avec Carboglace)
Contents (per one capsule)
Uses of Reagent
Soluble Solvents
Related Product
| Numéro de produit | R0308 |
| Formule moléculaire / poids moléculaire | C__3__6H__3__0Cl__2P__2Pd = 701.90 |
| Etat physique (20 ° C) | Solid |
Condition de stockage
|
Refrigerated (0-10°C) |
| Stocker sous gaz inerte | Store under inert gas |
| Condition à éviter | Air Sensitive,Heat Sensitive |
| CAS RN | 13965-03-2 |
| Appearance | White to Light yellow to Light orange capsule |
| Functionality test (conversion ratio) | min.90.0 % |
| N ° SH (import / export) (TCI-E) | 3822190090 |
Pd(PPh3)2Cl2 (HPMC encapsulated) (one capsule) was added to a solution of 2-acetamido-5-bromo-4-methylpyridine (410 mg, 1.80 mmol), cesium carbonate (650 mg, 2.0 mmol, 1.1 eq.) and phenylboronic acid (330 mg, 2.7 mmol, 1.5 eq.) in DME/water (4:1, 5 mL) at r.t. and the reaction mixture was stirred at 100 °C for 2 hours. The solution was then diluted with ethyl acetate (10 mL) and sat. Na2SO4 aq. (10 mL) and the mixture was filtered through Celite pad and the filtrate was extracted with ethyl acetate (15 mL x 2). The organic layer was washed with water (15 mL) and brine (15 mL), dried over sodium sulfate and concentrated under reduced pressure. The crude product was purified by silica gel chromatography (ethyl acetate:hexane = 2:1 - 1:4) and then further purified by reversed-phase silica gel chromatography (water:acetonitrile = 95:5 - 40:60) to afford 2-acetamido-4-methyl-5-phenylpyridine (379 mg, 93% yield) as a white solid.
The reaction mixture was monitored by GC.
The silica gel column purification failed to separate the debromo compound. Therefore, the purification was also performed on an ODS column.
The material of the capsule is water-soluble HPMC (hydroxypropyl methylcellulose).
The shape of the capsule is like the image below and Pd(PPh3)2Cl2 (ca. 90 μmol) is encapsulated in each capsule.

The capsule disintegrates as shown in the image below when stirred in the solvent for about 15 minutes, releasing its content.
2-Acetamido-4-methyl-5-phenylpyridine
1H NMR (400 MHz, CDCl3); δ 9.24-9.06 (brs, 1H), 8.16 (s, 1H), 8.10 (s, 1H), 7.46-7.36 (m, 3H), 7.30-7.29 (m, 2H), 2.32 (s, 3H), 2.21 (s, 3H).
La FDS demandée n'est pas disponible.
Nous contacter pour plus d'informations.
Un échantillon CoA pour ce produit n'est pas disponible pour le moment.
Le tableau analytique demandé n'est pas disponible. Nous sommes désolés pour ce désagrément.