HuagongsheHuagongshe Chemistry Print Report · For research reference only
Dimethylamine, hydrochloride → N,N-dimethyl-2-thioxo-2,3-dihydrobenzo[d]oxazole-6-carboxamide
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Dimethylamine, hydrochloride | HCID 10473 | — |
| Reactant | Diisopropylethylamine | HCID 81531 | — |
| Reactant | Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1) | HCID 9886157 | — |
| Reactant | 2-Sulfanyl-1,3-benzoxazole-6-carboxylic acid | HCID 20734770 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | N,N-dimethyl-2-thioxo-2,3-dihydrobenzo[d]oxazole-6-carboxamide | HCID 18967003 | — |
Reaction Steps
2-Thioxo-2,3-dihydrobenzo[d]oxazole-6-carboxylic acid (Example 92B, 394 mg, 2.02 mmol), dimethylamine hydrochloride (181 mg, 2.22 mmol), and O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (844 mg, 2.22 mmol) were combined in tetrahydrofuran (20 mL) and dimethylformamide (2 mL). Diisopropylethylamine (1.5 mL, 8.68 mmol) was added and the mixture was stirred at ambient temperature overnight. The mixture was diluted with dichloromethane, washed with a 1 N aqueous solution of hydrochloric acid, and absorbed on silica gel. The crude mixture was purified with silica gel chromatography eluting with a gradient of methanol in dichloromethane (2-20%) to afford the title compound. MS (ESI+) m/z 222.9 (M+H)+.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08153813B2 |
| Source dataset | uspto-grants-2012_04 |
| ORD ID | ord-8fd9e6c1d2d4409fa97702783c762dc5 |
| Source note | uspto-grants-2012_04 |