Bis(2-bromoethyl) ether → HCID 10105011, compound
Reaction equation
[NH2:1][C:2]1[CH:25]=[CH:24][C:5]2[C:6]([CH2:9]CC3CCN(CC4C=CC=CC=4)CC3)=[N:7][O:8][C:4]=2[CH:3]=1.[CH2:26]([O:29][CH2:30][CH2:31]Br)[CH2:27]Br.C(N(C(C)C)CC)(C)C>C1(C)C=CC=CC=1.CCOC(C)=O>[CH3:9][C:6]1[C:5]2[CH:24]=[CH:25][C:2]([N:1]3[CH2:31][CH2:30][O:29][CH2:26][CH2:27]3)=[CH:3][C:4]=2[O:8][N:7]=1Participants
Reactant 3
Product 1
Reagents, catalysts & solvents 2
Conditions
- Temperature
- 120 °C
Procedure
A mixture of 6-amino-3-[2-[1-(phenylmethyl)-4-piperidinyl]ethyl]-1,2-benzisoxazole (0.230 g, 1.55 mmol), β,β′-dibromodiethyl ether (0.397 g, 1.71 mmol), and diisopropylethyl amine (Hunig's base, 0.648 mL, 3.72 mmol) in toluene (2.5 mL) was heated at 120° C. for 15 hours. The cooled reaction mixture was diluted with EtOAc and washed with water and brine and dried (MgSO4), filtered, and concentrated. Two additional separate reactions using 6-amino-3-[2-[1-(phenylmethyl)-4-piperidinyl]ethyl]-1,2-benzisoxazole (0.050 g, 0.34 mmol, and 0.150 g, 1.01 mmol) were carried out in the same manner. Crude product from the three reactions was combined and purified by silica gel flash chromatography (1% MeOH/CH2Cl2) to give the title compound (0.499 g, 79% combined yield) as a pale yellow solid. A small sample was further purified by recrystallization (EtOAc/hexanes) to give a white solid.
Workup
- customThe cooled reaction mixture
- washwashed with water and brine
- dry with materialdried (MgSO4)
- filtrationfiltered
- concentrationconcentrated
- customTwo additional separate reactions
- custompurified by silica gel flash chromatography (1% MeOH/CH2Cl2)
Sources & evidence
- ORD record
- ord-869c775b01704aae90ed966c53971509
- Source dataset
- uspto-grants-2002_12
- Patent number
- US06498255B2
Reaction notes
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