Borane;tetrahydrofuran → Methyl 3-(piperidin-1-yl)benzoate
Reaction equation
O=[C:2]1[CH2:7][CH2:6][CH2:5][CH2:4][N:3]1[C:8]1[CH:9]=[C:10]([CH:15]=[CH:16][CH:17]=1)[C:11]([O:13][CH3:14])=[O:12].B.O1CCCC1>C1COCC1>[N:3]1([C:8]2[CH:9]=[C:10]([CH:15]=[CH:16][CH:17]=2)[C:11]([O:13][CH3:14])=[O:12])[CH2:4][CH2:5][CH2:6][CH2:7][CH2:2]1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
The compound of Example 37 (640 mg, 2.75 mmol) was dissolved in dry THF (30 ml) and borane-tetrahydrofuran complex (5 ml, 1M solution in THF) was added. The mixture was stirred under nitrogen under reflux for 1 h, then cooled and evaporated. The residue was taken up in MeOH/acetic acid (6/1, v/v, 70 ml) and heated under reflux for 3 h, then evaporated and chromatographed (eluant 10% EtOAc in hexanes) to provide a colourless oil (540 mg, 90%).