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CAS RN: 166330-10-5 | Product Number: R0301
DPEphos (HPMC encapsulated)
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Purity:
Synonyms:
Product Documents:
| Size | Unit Price | Belgium | Japan* | Quantity |
|---|---|---|---|---|
| 10EACH |
€60.00
|
Contact Us | 19 |
|
*Stock available in Belgium will be delivered in 1 to 3 days
*Stock available in Japan will be delivered in 1 to 2 weeks (excludes regulated items and dry ice shipments).
| Product Number | R0301 |
| Molecular Formula / Molecular Weight | C__3__6H__2__8OP__2 = 538.57 |
| Physical State (20 deg.C) | Solid |
| Storage Temperature | Room Temperature (Recommended in a cool and dark place, <15°C) |
| Store Under Inert Gas | Store under inert gas |
| Condition to Avoid | Hygroscopic |
| CAS RN | 166330-10-5 |
Specifications
| Appearance | White to Almost white capsule |
| Functionality test (conversion ratio) | min.90.0 % |
Properties (reference)
GHS
| Pictogram |
|
| Signal Word | Warning |
| Hazard Statements | H315 : Causes skin irritation. H319 : Causes serious eye irritation. |
| Precautionary Statements | P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ eye protection/ face protection. P302 + P352 : IF ON SKIN: Wash with plenty of water. P337 + P313 : If eye irritation persists: Get medical advice/ attention. P362 + P364 : Take off contaminated clothing and wash it before reuse. P332 + P313 : If skin irritation occurs: Get medical advice/ attention. |
Related Laws:
Transport Information:
| HS Number | 3822190090 |
Application
TCI Practical Example: Suzuki-Miyaura Coupling Using the Encapsulated Pd2(dba)3 and DPEphos
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Used Chemicals
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Procedure
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Pd2(dba)3 (HPMC encapsulated) (one capsule) and DPEphos (HPMC encapsulated) (one capsule) were added to a solution of 2-acetamido-5-bromo-4-methylpyridine (340 mg, 1.50 mmol), cesium carbonate (540 mg, 2.0 mmol, 1.1 eq.) and phenylboronic acid (270 mg, 2.3 mmol, 1.5 eq.) in THF/water (10:1, 8.25 mL) at r.t. and the reaction mixture was stirred at 100 °C for 4 hours. The solution was then diluted with ethyl acetate (10 mL) and sat. sodium sulfate (10 mL), and filtered through Celite pad. The filtrate was separated and 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 = 1:2 - 1:1) to afford 2-acetamido-4-methyl-5-phenylpyridine (319 mg, 94% yield) as a white solid.
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Experimenter’s Comments
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The reaction mixture was monitored by GC.
The material of the capsule is water-soluble HPMC (hydroxypropyl methylcellulose).
The shape of the capsule is like the image below and Pd2(dba)3 (ca. 60 μmol) and DPEphos (ca. 150 μmol) are encapsulated in each capsule, respectively.
The capsule disintegrates as shown in the image below when stirred in the solvent for about 15 minutes, releasing its content.
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Analytical Data
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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).
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Lead Reference
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- Reagent and Catalyst Capsules: A Chemical Delivery System for Reaction Screening and Parallel Synthesis
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Other References
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- HPMC: A Biomass-Based Semisynthetic Sustainable Additive Enabling Clean and Fast Chemistry in Water
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