HuagongsheHuagongshe Chemistry Print Report · For research reference only
Water → Ethyl 2-fluoro-4-(methylamino)-5-nitrobenzoate
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Water | HCID 962 | — |
| Reactant | Methylamine | HCID 6329 | — |
| Reactant | Ethyl 2,4-difluoro-5-nitrobenzoate | HCID 22330120 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | Ethyl 2-fluoro-4-(methylamino)-5-nitrobenzoate | HCID 59529818 | — |
Reaction Steps
A solution of MeNH2 in THF (21.6 mL; 2 M; 43.3 mmol) was added dropwise to a solution of ethyl 2,4-difluoro-5-nitrobenzoate (5.0 g; 21.6 mmol) in THF (70 mL) at −5° C. The mixture was left over night at rt whereafter an additional portion of MeNH2 in THF (10.0 mL; 2 M; 21.6 mmol) was added at 0° C. After 3 h at rt, water was added and the mixture was concentrated. The resulting precipitate was filtered off and dried to give the sub-title compound. Yield: 5.0 g (96%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08921405B2 |
| Source dataset | uspto-grants-2014_12 |
| ORD ID | ord-854cf4cc74204654b478249ed47ccc7d |
| Source note | uspto-grants-2014_12 |