Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Chloroform | HCID 6212 | — |
| Reactant | Biphenyl, 4-chloro-4'-nitro- | HCID 22613 | — |
| Reactant | Potassium tert-butoxide | HCID 23665647 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 17989336 | HCID 17989336 | 63% |
Reaction Steps
4′-Chloro-4-nitro-biphenyl [J. Amer. Chem. Soc; 68; 1946; 404] (2.74 g, 11.7 mmol) was dissolved in DMF (20 ml) and THF (6 ml), then potassium t-butoxide 5.26 g (47 mmol) was added. The stirred mixture was cooled to −73° C. then a solution of chloroform in THF (6 ml) was slowly introduced, maintaining this temperature. After a further 1 minute, the reaction was quenched with acetic acid (5 ml). The mixture was poured into water (200 ml) and extracted with dichloromethane. The crude product was purified by flash chromatography on silica (using dichloromethane-hexane as eluents) to give 4′-chloro-3-(1,1-dichloro-methyl)-4-nitro-biphenyl in 63% yield;
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US07220777B2 |
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| Source dataset | uspto-grants-2007_05 |
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| ORD ID | ord-223d4ec77faf41e2a34b76527d7f8d80 |
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| Source note | uspto-grants-2007_05 |
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