Ethanethiol → 2-(4-Hydroxyphenyl)-3-[4-[2-(piperidin-1-yl)ethoxy]benzoyl]-6-hydroxybenzofuran

HRID 325147Notes

Reaction equation

HRID 325147 reaction equation
C[O:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]2[O:10][C:11]3[CH:34]=[C:33]([O:35]C)[CH:32]=[CH:31][C:12]=3[C:13]=2[C:14](=[O:30])[C:15]2[CH:20]=[CH:19][C:18]([O:21][CH2:22][CH2:23][N:24]3[CH2:29][CH2:28][CH2:27][CH2:26][CH2:25]3)=[CH:17][CH:16]=2)=[CH:5][CH:4]=1.[Cl-].[Cl-].[Cl-].[Al+3].C(S)C>C(Cl)CCl>[OH:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]2[O:10][C:11]3[CH:34]=[C:33]([OH:35])[CH:32]=[CH:31][C:12]=3[C:13]=2[C:14](=[O:30])[C:15]2[CH:16]=[CH:17][C:18]([O:21][CH2:22][CH2:23][N:24]3[CH2:25][CH2:26][CH2:27][CH2:28][CH2:29]3)=[CH:19][CH:20]=2)=[CH:5][CH:4]=1

Participants

5

Reactant 3

HCID 6343EthanethiolHCID 6451240Aluminum(III) ChlorideHCID 9891548HCID 9891548, compound

Product 1

HCID 99557562-(4-Hydroxyphenyl)-3-[4-[2-(piperidin-1-yl)ethoxy]benzoyl]-6-hydroxybenzofuran

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

The title product was prepared by the demethylation of 2-(4-methoxyphenyl)-3-[4-[2-(piperidin-1-yl)ethoxy]benzoyl]-6-methoxybenzofuran, the product of Example 1a, supra. In a 250 ml three-neck round bottom flask were combined ethylene chloride (50 ml) and aluminum trichloride (9.60 g, 72 mmol) and ethanethiol (6.39 g, 103 mmol) to create a pale yellow liquid. To this liquid was then added the product of Example 1a (5.00 g, 10.3 mmol) in a gradual fashion. A red oil precipitated and the mixture was stirred for about 20 minutes. After cooling the reaction mixture in an ice bath 100 ml of tetrahydrofuran was added and the mixture was allowed to stir until all of the oil had gone into solution.

Workup

  1. customIn a 250 ml three-neck round bottom flask were combined
  2. customA red oil precipitated
  3. temperatureAfter cooling the reaction mixture in an ice bath 100 ml of tetrahydrofuran
  4. additionwas added
  5. stirringto stir until all of the oil

Sources & evidence

ORD record
ord-03896826485b4ee09638a93ac314fe6e
Source dataset
uspto-grants-2001_04
Patent number
US06221838B1

Reaction notes

Loading…