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| | 3-Bromo-4-fluorotoluene Basic information |
| | 3-Bromo-4-fluorotoluene Chemical Properties |
| Boiling point | 169 °C/756 mmHg (lit.) | | density | 1.507 g/mL at 25 °C (lit.) | | refractive index | n20/D 1.531(lit.) | | Fp | 164 °F | | storage temp. | Sealed in dry,Room Temperature | | form | Liquid | | Specific Gravity | 1.52 | | color | Clear colorless to light yellow | | BRN | 1680604 | | InChI | InChI=1S/C7H6BrF/c1-5-2-3-7(9)6(8)4-5/h2-4H,1H3 | | InChIKey | QLRKALMVPCQTMU-UHFFFAOYSA-N | | SMILES | C1(F)=CC=C(C)C=C1Br | | CAS DataBase Reference | 452-62-0(CAS DataBase Reference) |
| Hazard Codes | Xi | | Risk Statements | 36/37/38 | | Safety Statements | 26-36/37/39 | | WGK Germany | 3 | | HazardClass | IRRITANT | | HS Code | 29039990 | | Storage Class | 10 - Combustible liquids | | Hazard Classifications | Eye Irrit. 2
Skin Irrit. 2
STOT SE 3 |
| | 3-Bromo-4-fluorotoluene Usage And Synthesis |
| Chemical Properties | colorless to light yellow liqui | | Uses | 3-Bromo-4-fluorotoluene was employed as starting reagent in the synthesis of [4-fluoro-3-(trimethylsilyl)benzyl]guanidine. It was also employed as benzyne precursor in the synthesis of 6-methyl-1,2,3,4-tetrahydro-2,3-(benzylidenedioxy)-1,4-ethenonapthalene. | | Synthesis | Example 4: 84 g of 2-bromo-4-methylaniline and 54.5 g of isobutyl nitrite were slowly added dropwise through two dropping funnels, respectively, to a solution of 160 g of dimethoxyethane containing 37 g of boron trifluoride and 10.3 g of hydrogen fluoride at a temperature of -5°C to 0°C (the dropping process lasted for 1 hour). After the dropwise addition, the reaction mixture was continued to be stirred at 0°C for 15 min, followed by diafiltration. The resulting crystalline diazonium salt was washed with 50 mL of pre-cooled dimethoxyethane and then dried under vacuum at room temperature. A diazonium salt product of 122.5 g was obtained in a yield of 86% of the theoretical value. The decomposition reaction was carried out according to the method of Example 6, resulting in 3-bromo-4-fluorotoluene in 92.4% yield of the theoretical value. | | References | [1] Patent: US4476320, 1984, A |
| | 3-Bromo-4-fluorotoluene Preparation Products And Raw materials |
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