Maximum quantity allowed is 999
CAS RN: 131274-22-1 | 제품번호: R0318
P(tBu)3·HBF4 (HPMC encapsulated)
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순도/분석 방법:
- Tri-tert-butylphosphonium Tetrafluoroborate (HPMC encapsulated)
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•보관 조건은 예고없이 변경 될 수 있습니다. 제품 보관 조건의 최신 자료는 홈페이지에 기재되어 있으니 양해 부탁드립니다.
제품보충정보:
Contents (per one capsule)
- P(t-Bu)3·HBF4 ca. 0.270 mmol
Uses of Reagent
- Applicable to palladium-catalyzed reactions due to a ligand encapsulated in HPMC capsules
Soluble Solvents
- Water, DMSO, DMF, 1,4-Dioxane (50°C), THF/Water mixture, 1,2-Dimethoxyethane/Water mixture
Related Product
- T2584 Tri-tert-butylphosphonium Tetrafluoroborate
| 제품번호 | R0318 |
| M.F. / M.W. | C__1__2H__2__8BF__4P = 290.13 |
| 물리적 상태 (20 ℃) | Solid |
보관 조건
|
Room Temperature (Recommended in a cool and dark place, <15°C) |
| 불활성 가스 하에서 보관 | Store under inert gas |
| 피해야 할 조건 | Hygroscopic |
| CAS RN | 131274-22-1 |
| Appearance | White to Almost white capsule |
| Functionality test (conversion ratio) | min.90.0 % |
| 픽토그램 |
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| 신호 워드 | Danger |
| 위험물 및 유해 등록 | H302 : Harmful if swallowed. H314 : Causes severe skin burns and eye damage. |
| 주의 사항 | P501 : Dispose of contents/ container to an approved waste disposal plant. P260 : Do not breathe dust. P270 : Do not eat, drink or smoke when using this product. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection. P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water. P301 + P330 + P331 : IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P363 : Wash contaminated clothing before reuse. P301 + P312 + P330 : IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Rinse mouth. P304 + P340 + P310 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor. P305 + P351 + P338 + P310 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/doctor. P405 : Store locked up. |
| UN 번호 | UN1759 |
| 등급 | 8 |
| 포장 그룹 | III |
| HS 번호* | 3822.19-000 |
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Used Chemicals
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Procedure
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Pd2(dba)3 (HPMC encapsulated) (one capsule) and tBu3P·HBF4 (HPMC encapsulated) (one capsule) were added to a solution of 2-acetamido-5-bromo-4-methylpyridine (618 mg, 2.70 mmol), cesium carbonate (968 mg, 2.97 mmol, 1.1 eq.) and phenylboronic acid (494 mg, 4.05 mmol, 1.5 eq.) in THF/ water (10:1, 13 mL) at room temperature and the reaction mixture was stirred at 100 °C for 2 hours. The solution was then diluted with ethyl acetate (12.5 mL) and sat. sodium sulfate (12.5 mL), and filtered through Celite pad. The filtrate was separated and the organic layer was washed with water (30 mL) and brine (30 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 (710 mg, 98% 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 tBu3P·HBF4 (ca. 270 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
SDS
요청한 SDS를 사용할 수 없습니다.
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규격표
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분석 차트
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