HuagongsheHuagongshe Chemistry Print Report · For research reference only
Sodium triacetoxyborohydride → Methyl (3R,4R)-1-[2-(5,7-difluoro-2-oxoquinolin-1(2H)-yl)ethyl]-4-{[(2E)-3-(2,5-difluorophenyl)prop-2-en-1-yl]amino}piperidine-3-carboxylate
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Sodium triacetoxyborohydride | HCID 5049666 | — |
| Reactant | Methyl (3R,4R)-4-amino-1-[2-(5,7-difluoro-2-oxoquinolin-1(2H)-yl)ethyl]piperidine-3-carboxylate | HCID 66774891 | — |
| Reactant | (2E)-3-(2,5-difluorophenyl)-2-propenal | HCID 86642138 | — |
| Solvent | dichloromethane N,N-dimethylformamide | HCID 22350042 | — |
| Product | Methyl (3R,4R)-1-[2-(5,7-difluoro-2-oxoquinolin-1(2H)-yl)ethyl]-4-{[(2E)-3-(2,5-difluorophenyl)prop-2-en-1-yl]amino}piperidine-3-carboxylate | HCID 66774661 | 43.4% |
Reaction Steps
Methyl (3R,4R)-4-amino-1-[2-(5,7-difluoro-2-oxoquinolin-1(2H)-yl)ethyl]piperidine-3-carboxylate (Intermediate 38) (195 mg, 0.53 mmol), (2E)-3-(2,5-difluorophenyl)acrylaldehyde (FR 2872164) (90 mg, 0.53 mmol) and sodium triacetoxy borohydride (339 mg, 1.6 mmol) were reacted as described for Example 6. Chromatography on silica gel with dichloromethane/N,N-dimethylformamide (25:1 to 15:1) gave 119 mg (43%) of product as a colorless oil.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US07875715B2 |
| Source dataset | uspto-grants-2011_01 |
| ORD ID | ord-dce5262aa2164a4d8b51538b1acb6c6d |
| Source note | uspto-grants-2011_01 |