Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Benzylamine | HCID 7504 | — |
| Reactant | Diisopropylethylamine | HCID 81531 | — |
| Reactant | 1,2-Difluoro-4-nitrobenzene | HCID 123053 | — |
| Solvent | Acetonitrile | HCID 6342 | — |
| Product | HCID 10800431 | HCID 10800431 | 93.7% |
Reaction Steps
50 g (34.5 mL, 14.3 mmol) 3,4-difluoronitrobenzene and 44.6 mL (408.6 mmol) benzylamine were combined with 600 mL acetonitrile, and then 82.3 mL (471.5 mmol) N,N-diisopropylethylamine (DIPEA) was added thereto. The resultant mixture was slowly heated to reflux. The reaction substantially completed after refluxing 5 hours, as monitored by a real-time thin layer chromatography (TLC). Then, heating was stopped and the mixture was allowed to cool to room temperature, resulting in the precipitation of a colorless transparent crystal. The mixture was filtered when substantially no more crystal precipitated. The filtrate was evaporated in a rotatory evaporator to afford a yellowish solid, which was recrystallized with ethanol to obtain a yellow crystal. Then, the yellow crystal was dried and weighed 72.5 g, with a yield of 93.7%.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08946436B2 |
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| Source dataset | uspto-grants-2015_02 |
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| ORD ID | ord-eaf682eefc014786be63240e31d44783 |
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| Source note | uspto-grants-2015_02 |
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