Acetic Acid → methyl 5-bromo-3-((2-methoxyethyl)(tetrahydro-2H-pyran-4-yl)amino)-2-methylbenzoate
Reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([NH:13][CH:14]2[CH2:19][CH2:18][O:17][CH2:16][CH2:15]2)[C:5]([CH3:12])=[C:6]([CH:11]=1)[C:7]([O:9][CH3:10])=[O:8].[CH3:20][O:21][CH2:22][CH:23]=O.C(O)(=O)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C([O-])(O)=O.[Na+]>ClC(Cl)C>[Br:1][C:2]1[CH:3]=[C:4]([N:13]([CH2:23][CH2:22][O:21][CH3:20])[CH:14]2[CH2:19][CH2:18][O:17][CH2:16][CH2:15]2)[C:5]([CH3:12])=[C:6]([CH:11]=1)[C:7]([O:9][CH3:10])=[O:8]Participants
7
Reactant 5
Product 1
Reagents, catalysts & solvents 1
Procedure
To a stirred solution of methyl 5-bromo-2-methyl-3-((tetrahydro-2H-pyran-4-yl)amino)benzoate (400 mg, 1.22 mmol) and 2-methoxyacetaldehyde (1.3 mg, 17.56 mmol) in 7 ml of dichloroethane, acetic acid (0.42 mL, 7.33 mmol) was added and stirred at room temperature for 20 minutes. The reaction mixture was cooled to 0° C. and sodium triacetoxyborohydride (777 mg, 3.66 mmol) was added and stirred at room temperature for 2 h. The reaction mixture was then neutralized with sat. NaHCO3 and extracted with DCM, and the organic layer was dried over Na2SO4, concentrated under reduced pressure to get 260 mg of crude product.
Workup
- temperatureThe reaction mixture was cooled to 0° C.
- stirringstirred at room temperature for 2 h
- extractionextracted with DCM
- dry with materialthe organic layer was dried over Na2SO4
- concentrationconcentrated under reduced pressure
Sources & evidence
- ORD record
- ord-a611e7179c6a4d78ba3eae8cc439e118
- Source dataset
- uspto-grants-2014_07
- Patent number
- US08765732B2
Reaction notes
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