HuagongsheHuagongshe Chemistry Print Report · For research reference only
Dimethylformamide → 4-Bromo-1-(chloromethyl)-2-methylbenzene
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Dimethylformamide | HCID 6228 | — |
| Reactant | Thionyl Chloride | HCID 24386 | — |
| Reactant | (4-Bromo-2-methylphenyl)methanol | HCID 22280088 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | 4-Bromo-1-(chloromethyl)-2-methylbenzene | HCID 20072358 | 100% |
Reaction Steps
Add thionyl chloride (14.31 mL, 0.2 mol,) to a solution of (4-bromo-2-methyl-phenyl)methanol (32.9 g, 0.16 mol) in dichloromethane (200 mL) and dimethylformamide (0.025 mol, 2.0 mL) at 0° C. After 1 hour at room temperature pour the mixture into ice-water (100 g), extract with dichloromethane (300 mL), wash extract with 5% aq. sodium bicarbonate (30 mL) and brine (200 mL), dry over sodium sulfate, and concentrate under reduced pressure to give the crude title compound as a white solid (35.0 g, 0.16 mol). The material is used for the next step of reaction without further purification. 1H NMR (CDCl3): δ 2.38 (s, 3H), 4.52 (s, 2H), 7.13-7.35 (m, 3H).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US09296775B2 |
| Source dataset | uspto-grants-2016_03 |
| ORD ID | ord-08435e2ae3cb4fecb62420bbb09ada06 |
| Source note | uspto-grants-2016_03 |