Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Nitrogen | HCID 947 | — |
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | 3,3-Dimethyl-1-butyne | HCID 13512 | — |
| Reactant | 2-Bromo-N-methyl-4-nitroaniline | HCID 20308846 | — |
| Catalyst | Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI) | HCID 24350 | — |
| Catalyst | HCID 178418476 | HCID 178418476 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Toluene | HCID 1140 | — |
| Product | HCID 59129150 | HCID 59129150 | 94% |
Reaction Steps
To a solution of (2-bromo-4-nitro-phenyl)-methyl-amine (22.5 g, 97.4 mmol) in toluene (200 mL) and water (100 mL) were added Et3N (19.7 g, 195 mmol), Pd(PPh3)2Cl2 (6.8 g, 9.7 mmol), CuI (0.7 g, 3.9 mmol) and 3,3-dimethyl-but-1-yne (16.0 g, 195 mmol) successively under N2 protection. The mixture was heated at 70° C. for 3 hours and then cooled down to room temperature. The resulting mixture was extracted with EtOAc (100 mL×3). The combined organic extracts were dried over anhydrous Na2SO4 and evaporated under vacuum to give [2-(3,3-dimethyl-but-1-ynyl)-4-nitro-phenyl]-methyl-amine (20.1 g, 94%), which was used in the next step without further purification. 1H NMR (400 MHz, CDCl3) δ 8.15 (d, J=2.4 Hz. 1H), 8.08 (dd, J=2.8, 9.2 Hz, 1H), 6.50 (d, J=9.2 Hz, 1H), 5.30 (brs, 1H), 3.00 (s, 3H), 1.35 (s, 9H).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US08575209B2 |
|---|
| Source dataset | uspto-grants-2013_11 |
|---|
| ORD ID | ord-5e8005571eae43e0a9477303c8afdcf9 |
|---|
| Source note | uspto-grants-2013_11 |
|---|
