Potassium Iodide → 6-Acetyl-3-(2-(4-(5-fluoro-1,2-benzisoxazol-3-yl)piperidin-1-yl)ethyl)-4,5,6,7-tetrahydro-2-methylthieno[2,3-c]pyridine

HRID 2294835

Reaction equation

HRID 2294835 reaction equation
[C:1]([N:4]1[CH2:9][CH2:8][C:7]2[C:10]([CH2:14][CH2:15]Br)=[C:11]([CH3:13])[S:12][C:6]=2[CH2:5]1)(=[O:3])[CH3:2].Cl.[F:18][C:19]1[CH:20]=[CH:21][C:22]2[O:26][N:25]=[C:24]([CH:27]3[CH2:32][CH2:31][NH:30][CH2:29][CH2:28]3)[C:23]=2[CH:33]=1.C(=O)([O-])[O-].[K+].[K+].[I-].[K+]>CN(C)C=O.C1(C)C=CC=CC=1>[C:1]([N:4]1[CH2:9][CH2:8][C:7]2[C:10]([CH2:14][CH2:15][N:30]3[CH2:29][CH2:28][CH:27]([C:24]4[C:23]5[CH:33]=[C:19]([F:18])[CH:20]=[CH:21][C:22]=5[O:26][N:25]=4)[CH2:32][CH2:31]3)=[C:11]([CH3:13])[S:12][C:6]=2[CH2:5]1)(=[O:3])[CH3:2]

Participants

7

Reactant 4

HCID 4875Potassium IodideHCID 11430Potassium CarbonateHCID 27947545-Fluoro-3-(piperidin-4-yl)-1,2-benzoxazole--hydrogen chloride (1/1)HCID 214719356-Acety-3-(2-bromoethyl)-4,5,6,7-tetrahydro-2-methylthieno[2,3-c]pyridine

Product 1

HCID 214720346-Acetyl-3-(2-(4-(5-fluoro-1,2-benzisoxazol-3-yl)piperidin-1-yl)ethyl)-4,5,6,7-tetrahydro-2-methylthieno[2,3-c]pyridineYield 20.5%

Reagents, catalysts & solvents 2

HCID 1140TolueneSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
90 °C

Procedure

A mixture of 334 mg of 6-acetyl-3-(2-bromoethyl)-4,5,6,7-tetrahydro-2-methylthieno[2,3-c]pyridine, 308 mg of 4-(5-fluoro-1,2-benzisoxazol-3-yl)piperidine hydrochloride, 500 mg of potassium carbonate and 220 mg of potassium iodide in 10 ml of dimethylformamide and 10 ml of toluene was stirred at 90° C. for 25 hours and concentrated in vacuo. To the residue were added ethyl acetate and water and separated. The ethyl acetate layer was washed with water, dried over magnesium sulfate and concentrated in vacuo. The residue was purified by column chromatography on a silica gel to give 100 mg of 6-acetyl-3-(2-(4-(5-fluoro-1,2-benzisoxazol-3-yl)piperidin-1-yl)ethyl)-4,5,6,7-tetrahydro-2-methylthieno[2,3-c]pyridine as an oil, m.p. 167°-172° C. as oxalate thereof.

Workup

  1. concentrationconcentrated in vacuo
  2. additionTo the residue were added ethyl acetate and water
  3. customseparated
  4. washThe ethyl acetate layer was washed with water
  5. dry with materialdried over magnesium sulfate
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by column chromatography on a silica gel

Sources & evidence

ORD record
ord-cb45a60e67c24fa19c67eb7b5f99763e
Source dataset
uspto-grants-1997_11
Patent number
US05691330

Linked notes

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