Sodium Hydroxide → (R)-3-(2-(hydroxymethyl)pyrrolidin-1-yl)-2-phenylquinoxaline-6-carboxylic acid
Reaction equation
[OH:1][CH2:2][C@H:3]1[CH2:7][CH2:6][CH2:5][N:4]1[C:8]1[C:9]([C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)=[N:10][C:11]2[C:16]([N:17]=1)=[CH:15][C:14]([C:18]([O:20]C)=[O:19])=[CH:13][CH:12]=2.[OH-].[Na+]>CO.O>[OH:1][CH2:2][C@H:3]1[CH2:7][CH2:6][CH2:5][N:4]1[C:8]1[C:9]([C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)=[N:10][C:11]2[C:16]([N:17]=1)=[CH:15][C:14]([C:18]([OH:20])=[O:19])=[CH:13][CH:12]=2Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 70 °C
Procedure
Into a 100-mL round-bottom flask, was placed a solution of (R)-methyl 3-(2-(hydroxymethyl)pyrrolidin-1-yl)-2-phenylquinoxaline-6-carboxylate (120 mg, 0.33 mmol, 1.00 equiv) and sodium hydroxide (66 mg, 1.65 mmol, 4.99 equiv) in methanol/H2O (20/5 mL). The reaction was stirred for 5 h at 70° C. and concentrated to dryness. The residue was dissolved in 20 mL H2O and washed with 10 mL EtOAc. The pH of the aqueous layer was adjusted to 7 with 1N HCl and extracted with DCM/MeOH (10/1, 20 mL×5). The organic layers were combined and dried over Na2SO4 and concentrated to dryness. This resulted in 80 mg (66%) of (R)-3-(2-(hydroxymethyl)pyrrolidin-1-yl)-2-phenylquinoxaline-6-carboxylic acid as a yellow solid.
Workup
- customInto a 100-mL round-bottom flask, was placed
- concentrationconcentrated to dryness
- dissolutionThe residue was dissolved in 20 mL H2O
- washwashed with 10 mL EtOAc
- extractionextracted with DCM/MeOH (10/1, 20 mL×5)
- dry with materialdried over Na2SO4
- concentrationconcentrated to dryness
- customThis resulted in 80 mg (66%) of (R)-3-(2-(hydroxymethyl)pyrrolidin-1-yl)-2-phenylquinoxaline-6-carboxylic acid as a yellow solid
Sources & evidence
- ORD record
- ord-0b3ad92e1a6848b8b8e1817a08bd9d2a
- Source dataset
- uspto-grants-2015_11
- Patent number
- US09193693B2
Reaction notes
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