Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Cesium carbonate | HCID 10796 | — |
| Reactant | 1-Hydroxybenzotriazole | HCID 75771 | — |
| Reactant | 1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride | HCID 2723939 | — |
| Reactant | HCID 59830359 | HCID 59830359 | — |
| Reactant | 5,8-Dichloro-1,2,3,4-tetrahydroisoquinoline-6,7-diol--hydrogen bromide (1/1) | HCID 68508172 | — |
| Catalyst | 4-(Dimethylamino)pyridine | HCID 14284 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 42629727 | HCID 42629727 | 24% |
Reaction Steps
(E)-3-(2-(piperidin-1-yl)-6-(trifluoromethyl)pyridin-3-yl)acrylic acid (150.0 mg, 0.50 mmol) was suspended in dry THF (7.0 mL). DMAP (111.4 mg, 0.91 mmol) and caesium carbonate (296.0 mg, 0.91 mmol) were added and the mixture was stirred at rt for 15 minutes. 5,8-Dichloro-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline hydrobromide (143.0 mg, 0.45 mmol), EDC.HCl (130.6 mg, 0.68 mmol), HOBt (69.8 mg, 0.45 mmol) were then added. The mixture was stirred at rt overnight. Water (100 mL) was added and the product extracted with EtOAc. Combined organic extracts were dried (MgSO4), filtered and concentrated. Purification was done first using flash column chromatography (CH2Cl2/MeOH 98/2→95/5) and then by size exclusion (Sephadex LH20; CHCl3/MeOH 1/1) to yield 55.0 mg (24%) of the title product.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US08318768B2 |
|---|
| Source dataset | uspto-grants-2012_11 |
|---|
| ORD ID | ord-a3d0ff963d8c42e6b5cedb6d58ebf1af |
|---|
| Source note | uspto-grants-2012_11 |
|---|
