5-Bromo-7-methyl-1H-indole
Synonym(s):5-Bromo-7-methyl-1H-indole
- CAS NO.:15936-81-9
- Empirical Formula: C9H8BrN
- Molecular Weight: 210.07
- MDL number: MFCD12962648
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-12-04 17:14:20
What is 5-Bromo-7-methyl-1H-indole?
Synthesis
5-Bromo-7-methyl-1H-indole is synthesised from 4-bromo-6-(trimethylsilylacetylenyl)-2-methylaniline by reacting with potassium tert-butyrate and sodium hydride in the presence of inert gas. The steps are as follows:
Add sodium hydride (2.64g, 0.11mol) and DMF (70mL) to a 250ml three-necked flask at room temperature and under nitrogen protection.Stir and dissolve; a solution of the compound of formula IV (14g, 0.05mol) dissolved in DMF (30mL) is slowly added dropwise to the potassium tert-butoxide solution. After the addition, the reaction system was heated to 60 degrees and kept for 2 hours. After the reaction was completed, the reaction solution was poured into ice water, extracted with methyl tert-butyl ether, and washed with sodium bicarbonate aqueous solution and brine in turn.It was then dried over anhydrous sodium sulfate, filtered, and concentrated. The crude product is purified by silica gel column chromatography to obtain the compound of 5-bromo-7-methylindole. Yield: 8.36 g, yield: 80%.
Properties of 5-Bromo-7-methyl-1H-indole
Boiling point: | 165 °C(Press: 0.1 Torr) |
Density | 1.503 g/mL at 25 °C |
refractive index | n20/D1.648 |
Flash point: | >110℃ |
storage temp. | Sealed in dry,Room Temperature |
pka | 16.34±0.30(Predicted) |
form | Solid or semi-solid or lump or liquid |
Safety information for 5-Bromo-7-methyl-1H-indole
Signal word | Danger |
Pictogram(s) |
Corrosion Corrosives GHS05 Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H318:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 5-Bromo-7-methyl-1H-indole
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