4-Methoxybenzenesulfonyl chloride → HCID 10163647, compound

HRID 272375Notes

Reaction equation

HRID 272375 reaction equation
[CH:1]([C:4]1[CH:9]=[CH:8][C:7]([CH:10]2[C:14]3[C:15]([CH3:22])=[C:16]([NH2:21])[C:17]([CH3:20])=[C:18]([CH3:19])[C:13]=3[O:12][C:11]2([CH3:24])[CH3:23])=[CH:6][CH:5]=1)([CH3:3])[CH3:2].[CH3:25][O:26][C:27]1[CH:32]=[CH:31][C:30]([S:33](Cl)(=[O:35])=[O:34])=[CH:29][CH:28]=1.C(N(CC)CC)C>C(Cl)(Cl)Cl>[CH:1]([C:4]1[CH:9]=[CH:8][C:7]([CH:10]2[C:14]3[C:15]([CH3:22])=[C:16]([NH:21][S:33]([C:30]4[CH:29]=[CH:28][C:27]([O:26][CH3:25])=[CH:32][CH:31]=4)(=[O:35])=[O:34])[C:17]([CH3:20])=[C:18]([CH3:19])[C:13]=3[O:12][C:11]2([CH3:24])[CH3:23])=[CH:6][CH:5]=1)([CH3:3])[CH3:2]

Participants

5

Reactant 3

HCID 74014-Methoxybenzenesulfonyl chlorideHCID 8471TriethylamineHCID 105199783-(4-Isopropylphenyl)-2,2,4,6,7-pentamethyl-2,3-dihydro-1-benzofuran-5-amine

Product 1

HCID 10163647HCID 10163647, compoundYield 34%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Procedure

To a solution of 3-(4-isopropylphenyl)-2,2,4,6,7-pentamethyl-2,3-dihydro-1-benzofuran-5-amine (0.35 g, 1.08 mmol) and 4-methoxybenzenesulfonyl chloride (0.25 g, 1.19 mmol) in chloroform (5 ml) was added triethylamine (0.16 ml, 1.19 mmol) and the mixture was stirred at room temperature for 14 hours. The solvent was concentrated under reduced pressure. Water (20 ml) was added into the residue and the product was extracted twice with ethyl acetate. The combined organic layers were washed with 1N hydrochloric acid and an aqueous saturated solution of sodium hydrogen carbonate, dried on magnesium sulfate, filtered, and then concentrated under reduced pressure. The residue was crystallized from ethyl acetate-hexane to obtain 0.18 g (34% yield) of the title compound. Melting point: 206-208° C.

Workup

  1. concentrationThe solvent was concentrated under reduced pressure
  2. additionWater (20 ml) was added into the residue
  3. extractionthe product was extracted twice with ethyl acetate
  4. washThe combined organic layers were washed with 1N hydrochloric acid
  5. dry with materialan aqueous saturated solution of sodium hydrogen carbonate, dried on magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe residue was crystallized from ethyl acetate-hexane

Sources & evidence

ORD record
ord-47b8d3d30b1f43a98f308de92922ee40
Source dataset
uspto-grants-2008_11
Patent number
US07456162B2

Reaction notes

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